WO2001053517A1 - Automatic water toxicity measuring apparatus - Google Patents

Automatic water toxicity measuring apparatus Download PDF

Info

Publication number
WO2001053517A1
WO2001053517A1 PCT/KR2001/000074 KR0100074W WO0153517A1 WO 2001053517 A1 WO2001053517 A1 WO 2001053517A1 KR 0100074 W KR0100074 W KR 0100074W WO 0153517 A1 WO0153517 A1 WO 0153517A1
Authority
WO
WIPO (PCT)
Prior art keywords
well plate
luminescent microorganism
sample
microorganism
well
Prior art date
Application number
PCT/KR2001/000074
Other languages
French (fr)
Inventor
Hanoh Park
Hanee Park
Ilkyu Choi
Original Assignee
Bioneer Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bioneer Corporation filed Critical Bioneer Corporation
Priority to DE60124975T priority Critical patent/DE60124975T2/en
Priority to EP01942673A priority patent/EP1159442B1/en
Priority to AU28892/01A priority patent/AU2889201A/en
Publication of WO2001053517A1 publication Critical patent/WO2001053517A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
    • C12Q1/02—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving viable microorganisms
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/76—Chemiluminescence; Bioluminescence
    • G01N21/763—Bioluminescence
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water
    • G01N33/1826—Organic contamination in water
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water
    • G01N33/186—Water using one or more living organisms, e.g. a fish
    • G01N33/1866—Water using one or more living organisms, e.g. a fish using microorganisms
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2520/00—Use of whole organisms as detectors of pollution
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment

Definitions

  • the present invention relates to an automatic water toxicity measuring apparatus. More specifically, the present invention is directed to an apparatus that measures water toxicity and contamination successively and automatically by using luminescent microorganisms that live in freshwater.
  • a public has known the method of using luminescent microorganisms to measure water toxicity and contamination.
  • the luminescent mechanism of the luminescent microorganism is affected when the biochemical environmental conditions of the luciferase that controls the emission of light is activated, then the luminosity of the microorganism is changed.
  • the Microtox Assay System (hereinafter, MAS) commercialized by the MICROBICS Co. an apparatus that measure water toxicity and contamination using luminescent microorganisms.
  • the MAS method measures the luminosity of light emitted by luminescent microorganism in toxicity condition on the basis of the luminosity of the luminescent microorganism live non-toxic condition.
  • the measuring value of MAS is EC50 that represents the concentration of toxic chemical that causes 50% reduction of luminosity.
  • seawater microorganism since seawater microorganism is used in MAS system, an amount of salts that is equivalent to the seawater should be added separately to test sample to manifest the physiological function of luminescent microorganism and in this case, toxicity of chemicals that have reactivity with metals and salts are concerned to be offset.
  • the most part of the data measured from MAS show the results similar with those obtained from other microorganism toxicity measurement, however, in case of ammonia or cyanide and alike toxic chemical materials, the results from MAS do not align with the results obtained from other microorganism toxicity measurements.
  • the lyophilized microorganism contained in each ampoule should be rehydrated one by one, and then mixed with aqueous sample, and luminescence thereof is measured by luminometer.
  • MAS is operated in a batch operation system, wherein an operator who measures luminescence of each individual sample manually, is required. Therefore, in order to successively measure and observe the water toxicity continuously by using MAS method, an ampoule containing luminescent microorganism is needed each measuring time, and thus an operator should be required to operate the toxicity measuring apparatus. Due to these problems, it has been a very laborious work to measure water toxicity successively by using apparatus developed until now.
  • the object of the present invention is to provide an apparatus that can measure water toxicity automatically and continuously.
  • an automatic water toxicity measuring apparatus that comprises:
  • a sample supplier for gathering samples from water system at regular intervals and successively and for supplying test sample to luminescent microorganism
  • Multi-well plates which are containing luminescent microorganism, of which the top of the well is sealed with gas-impermeable film;
  • a multi-well plate storage unit that keeps and provides sequentially, multi-well plate in which each well contains lyophilized luminescent microorganism;
  • a control unit that control or regulate electrically or mechanically, the automatic operation of said each unit .
  • the apparatus of the present invention may further comprises a temperature control unit which control and/or maintain the interior temperature of the apparatus in constant.
  • the object of the present invention is to provide an apparatus that water toxicity can be measured successively without handling of operator.
  • Another object of the present invention is to provide multi-well plates which are containing luminescent microorganism, of which the top of the well is sealed with gas-impermeable film.
  • FIG. 1 is a front view of the automatic water toxicity measuring apparatus of the present invention.
  • FIG. 2 is a plane view of the automatic water toxicity measuring apparatus of the present invention.
  • FIG. 3 is a right-side view of the automatic water toxicity measuring apparatus of the present invention.
  • FIG. 4 is a left-side view of the automatic water toxicity measuring apparatus of the present invention. Best Mode for Carrying Out the Invention
  • the automatic water toxicity measuring apparatus of the present invention is characterized in comprising: A sample supplier for gathering samples from water system at regular intervals and successively, and for supplying test sample to luminescent microorganism;
  • Multi-well plates which are containing luminescent microorganism, of which the top of the well is sealed with gas-impermeable film;
  • a multi-well plate storage unit that keeps and provides sequentially, the multi-well plate in which each well contains lyophilized luminescent microorganism;
  • a transportation means for moving said multi-well plates A reagents storage unit that stores and provides various reagents to injection needles;
  • Injection needles for providing samples and reagents in an accurate dose into luminescent microorganism contained said multi-well plate;
  • a control unit that controls or regulates electronically or mechanically, the automatic operation of said each unit.
  • the apparatus of the present invention may further comprises a temperature control unit that preferably employs Peltier device and heat radiation board as the temperature controls means.
  • the said sample supplier is composed of circulation pump, sample-collecting block to collect aqueous samples from water system as like river, brook, lake, marshes, and etc., and sample supply tube.
  • the said control unit initiates the circulation pump operation in preset time interval. Then the said circulation pump takes in the sample from water system through the sample supply tube.
  • the aqueous sample collected by the said sample supplier is transferred into the injection needle by the operation of the said circulation pump through the sample supply tube.
  • At the end of the sample supply tube of the sample supplier there is a filter that prevents entering of non-liquid substances and also, is an apparatus for creating reverse stream to prevent clogging of the said filter with the non-liquid substances.
  • the said multi-well plate storage unit that stores and supplies the multi-well plates that contain lyophilized luminescent microorganism, is composed of rack which stores numerous multi-well plates in layering, operation means which moves the said rack in up/down directions, and the transportation means that transport the multi-well plate in front/back directions in order to take out the multi-well plates.
  • the luminescent microorganism of the present invention may be the freshwater luminescent microorganism obtained preferably from freshwater or prepared by gene manipulation.
  • the luminescent microorganisms are set in each well of the multi-well plate and then lyophilized.
  • the said well is purged with nitrogen then the front of the plate is sealed with gas-impermeable film thereby securing the long-term preservation of the microorganism.
  • the rack of the present invention can store numerous multi-well plates.
  • the operation means of rack consists of stepping motor and ball screw. The rack is driven by stepping motor to transport the multi-well plate in up/down directions thus desired plate can be selected.
  • the transportation means for the multi-well plate is to bring out the plate from inside the rack and mounting the multi-well plate on the stage by moving the plate in front/back directions to desired positions. That is, the said transportation means adjusts the position of the multi-well plate wherein the reagent and test sample can be precisely injected on the desired well through the injection needle and wherein the sensor can precisely measure the luminosity of light emitted by the microorganism contained in desired well.
  • the said transportation means consists of a pulley and belt mounted thereon, and stepping motor connected with pulley through the belt, and by the operation of the belt driven by the stepping motor, the transportation means take out the multi-well plate from the rack.
  • the said injection needle is composed of syringe, which takes in aqueous test sample, and reagent from sample supplier and reagent storage unit, and the piston operation means that control the amounts of test sample and reagents discharged.
  • the said piston operation means composed of stepping motor and ball screw, pulley and belt to control the movement of piston through the operation of stepping motor. Therefore, the injected amount through the syringe of the present invention can be quantitatively controlled by the control of stepping motor to an extent of below ⁇ l .
  • the position of the said syringe can be adjusted in up/down directions by means of pulley and the belt mounted thereon, ball spline and stepping motor, and thereby the movement of the syringe is driven by the operation of stepping motor.
  • the transportation means for moving syringe and sensor in left/right directions consist of pulley, stepping motor, and linear motion (LM) guide, and the syringe and the sensor unit move along with the LM guide by the operation of stepping motor.
  • the syringe and the sensor of the present invention are formed in one body and set. Thus, the syringe and the sensor move in left/right directions at the same time.
  • the said reagent storage unit comprises some bottles that contain various reagents and dilution buffer required for luminescence of microorganism.
  • the said sensor unit comprises of sensor and operation means thereof required for measuring the light reduction degree and luminosity of the luminescent microorganism.
  • photon multiplier tube(PMT) is employed as a sensor of the apparatus of the present invention.
  • the control unit cut off the PMT operation power to secure the PMT safety.
  • the apparatus of the present invention may further comprise a temperature control unit.
  • the temperature control unit of the present invention preferably employs Peltier device and heat radiation board as the temperature control means.
  • the interior temperature of the apparatus of the present invention should be maintained in a certain level to secure luminescent reaction and appropriate storage of microorganism and reagents. Since the interior temperature of the apparatus of the present invention should be constant continuously throughout the four (4) seasons, cooling during the summer season and heating during the winter season are required. Therefore, the apparatus of the present invention employs Peltier device that can cool and/or heat as one device the interior of the apparatus, together with air circulation devices, to control the interior temperature of the apparatus.
  • the thermostatic system of the apparatus that ensure uniform temperature in the interior of the apparatus, can minimize measuring error, which may be caused by temperature change, and also can secures long-term storage of microorganism.
  • the control unit of the apparatus of the present invention controls the operation of the stepping motors that control precise positions of each units, the analog- digital converter that converts the output data of sensor into digital data that can be acknowledged by the computer, various solenoid valve that convert electric signal into mechanical signal, the power supplier that supplies required DC power, the temperature sensor that measures the interior temperature of the apparatus and/or the power controller that controls the heat generated from Peltier device.
  • the control unit of the present invention comprises ⁇ -COM, SRAM, EEPROM, RS232C serial port, exterior sensor, and SRAM and EEPROM constitute memory unit.
  • the analog-digital converter of the present invention converts the analog output data of the sensor (PMT) into digital data, which can be acknowledged by the computer.
  • An automatic gain adjustment device is installed between the PMT sensor and the analog-digital converter in order to increase the applicability of the apparatus. That is, when the PMT output is weak, degree of gain is automatically increased, and contrarily when PMT output is strong, degree of gain is automatically reduced to maintain appropriate degree of gain.
  • solenoid valves controlled by electronic signals generated from the said control unit is used for selective operation of the circulation pump, PMT device, and the apparatus for creating reverse stream to prevent clogging of filter located at the end of the said sample supply tube.
  • the stepping motors of the apparatus rotate in accordance with the number of pulse inputted for purpose of the precise position control of each unit, and also are controlled by the control unit.
  • GUI graphic user interface
  • all information regarding to the operation status of the apparatus can be processed through the monitor screen of the computer.
  • self-diagnosis, and detection of exterior environment change and respond thereto are processed automatically to secure the safety of the apparatus .
  • the apparatus of the present invention can be controlled remotely and/or automatically operates to measures toxicity of aqueous sample and processes the data obtained therefrom for a prescribed period, without the operator' s manipulation by using reagents and luminescent microorganism stored in this apparatus.
  • the test sample supplier is composed of circulation pump (10), sample-collecting block (11) to collect aqueous samples from water system as like river, brook, lake, marshes, and etc., and sample supply tube (12).
  • the control unit initiates the circulation pump (10) operation in preset time interval. Then the said circulation pump takes in the test sample from water system.
  • the aqueous sample collected by the said test sample supplier is transferred into the injection needle by the operation of the said circulation pump (10) through the sample supply tube (12).
  • At the end of the sample supply tube of the said sample supplier there is a filter that prevents entering of non-liquid substances and also, is an apparatus for creating reverse stream to prevent clogging of the said filter with the non-liquid substances .
  • the said multi-well plate (17) storage unit that stores and supplies the multi-well plates that contain lyophilized luminescent microorganism, is composed of rack(18) which stores numerous multi-well plates (17) in layering, operation means (19) which moves the said rack in up/down directions, and the transportation means (20) that transport the multi-well plate (17) in front/back directions in order to take out the multi-well plates.
  • the luminescent microorganism of the present invention may be the freshwater luminescent microorganism obtained preferably from freshwater or prepared by gene manipulation. The luminescent microorganisms are set in each well of the multi-well plate and then lyophilized.
  • the rack of the present invention can store numerous multi-well plates.
  • the operation means of rack consists of stepping motor and ball screw.
  • the rack is driven by stepping motor to transport the multi-well plate in up/down directions thus desired plate can be selected.
  • the transportation means for the multi-well plate is to bring out the plate from inside the rack and mounting the multi-well plate on the stage by moving the plate in front/back directions to desired positions.
  • the said transportation means adjusts the position of the multi-well plate wherein the reagent and test sample can be precisely injected on the desired well through the injection needle and wherein the sensor can precisely measure the luminosity of light emitted by the microorganism contained in desired well.
  • the said transportation means consists of a pulley and belt mounted thereon, and stepping motor connected with pulley through the belt, and by the operation of the belt driven by the stepping motor, the transportation means take out the multi-well plate from the rack.
  • the said injection needle is composed of syringe (13) which takes in aqueous test sample and reagent from sample supplier and reagent storage unit, the piston operation means (14) that control the amounts of test sample and reagents discharged, and syringe transportation means (15, 16) .
  • the said piston operation means (14) composed of stepping motor and ball screw, pulley and belt to control the movement of piston through the operation of stepping motor. Therefore, the injected amount through the syringe of the present invention can be quantitatively controlled by the control of stepping motor to an extent of below ⁇ l .
  • the position of the said syringe can be adjusted in up/down directions by the means (15) is composed of pulley and the belt mounted thereon, ball spline and stepping motor, and thereby the movement of the syringe is driven by the operation of stepping motor.
  • the transportation means (16) for moving syringe and sensor in left/right directions consist of pulley, stepping motor, and linear motion (LM) guide, and the syringe and the sensor unit move along with the LM guide by the operation of stepping motor.
  • the syringe and the sensor of the present invention are formed in one body and set. Thus, the syringe and the sensor move in left/right directions at the same time.
  • the luminescent microorganism used in the present invention may be freshwater luminescent microorganism separated from freshwater is desirable (Kim, E. -C . , T. - S. Byun, K. -J. Park, and K. -H. Lee, 1998, Toxicity Test Using a Luminescently Transformed Bacterium with an highly Increased Sensitivity, The 38 th Korea Microorganism Scholarly Symposium and Spring Plenary Session; Park, K. -J., S. -J. Chun and K. -H. Lee, (1997), Development of toxicity test system using a luminescently transformed freshwater bacterium 52 nd Korean As. Biol. Sci., Chunbuk Univ. ) .
  • the luminescent microorganism used in the apparatus of the present invention all luminescent microorganisms that can be luminous on contact with chemical substances, can be used. These luminescent microorganisms are natural or prepared by gene manipulation. Various luminescent microorganisms may be employed in the apparatus of the present invention can be obtainable from microorganism depository throughout the world. Especially, YH9-RC unit of which accession number is KCTC 0730BP is preferable. The appropriate luminescent microorganisms used in the apparatus of the present invention and the proliferation method thereof are described in detail in Korea Patent Application No. 2000- 010763. Also, the method of lyophilizing luminescent microorganism used in the apparatus of the present invention is described in the Korea Patent Application No. 2000-37709.
  • the rack stores numerous multi-well plate as like 384 well plate.
  • the preferred embodiment of the present invention employs rack structure wherein six (6) or more 384 well plates can be layered in two (2) row.
  • the solution storage unit of the apparatus of the present invention stores bottles (21) that are containing reagents, dilution solution required for the activation of the luminescent microorganisms.
  • the sensor unit includes sensor (22) and operation means thereof, and the light reduction degree and luminosity of light emitted from luminescent microorganism is measured.
  • Photon Multiplier Tube (PMT) is appropriately employed as the sensor device.
  • the temperature control means of the present invention employs two (2) Peltier devices (23) and heat radiation board(24) .
  • the automatic water toxicity measuring apparatus of the present invention comprises a test sample supplier for gathering test samples from water system at regular intervals and successively and for supplying test sample to luminescent microorganism, a multi-well plate storage that keep and provide sequentially multi-well plate in which each well contains lyophilized luminescent microorganism, a transportation mean for moving said numerous multi-well plates sequentially, an injection needle for providing test samples and reagents in an accurate dose into luminescent microorganism contained said multi-well plate and a sensor for detecting luminosity after the lapse of some times from injection of test sample and reagent into luminescent microorganism, and a control unit that control or regulate electrically or mechanically the operation of said each unit automatically.
  • toxicity and contamination of water system can be measured successively without operator's manipulation until the reagents and luminescent microorganism stored in this apparatus are consumed.
  • automatic continuous water toxicity monitoring can be achieved.
  • the automatic water toxicity measuring apparatus of the present invention is appropriate to be employed as a terminal for remote monitoring of the water toxicity.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Organic Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Wood Science & Technology (AREA)
  • Microbiology (AREA)
  • Zoology (AREA)
  • Genetics & Genomics (AREA)
  • Biophysics (AREA)
  • Molecular Biology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • General Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
  • Measurement Of Radiation (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

The present invention relates to an automatic water toxicity measuring apparatus. More specifically, the present invention is directed to an apparatus that measures water toxicity and contamination successively and automatically by using luminescent microorganisms that live in freshwater.

Description

AUTOMATIC WATER TOXICITY MEASURING APPARATUS
Technical Field
The present invention relates to an automatic water toxicity measuring apparatus. More specifically, the present invention is directed to an apparatus that measures water toxicity and contamination successively and automatically by using luminescent microorganisms that live in freshwater.
Background Art
A public has known the method of using luminescent microorganisms to measure water toxicity and contamination. The luminescent mechanism of the luminescent microorganism is affected when the biochemical environmental conditions of the luciferase that controls the emission of light is activated, then the luminosity of the microorganism is changed. The Microtox Assay System (hereinafter, MAS) commercialized by the MICROBICS Co. an apparatus that measure water toxicity and contamination using luminescent microorganisms. The MAS method measures the luminosity of light emitted by luminescent microorganism in toxicity condition on the basis of the luminosity of the luminescent microorganism live non-toxic condition. The measuring value of MAS is EC50 that represents the concentration of toxic chemical that causes 50% reduction of luminosity.
However, since seawater microorganism is used in MAS system, an amount of salts that is equivalent to the seawater should be added separately to test sample to manifest the physiological function of luminescent microorganism and in this case, toxicity of chemicals that have reactivity with metals and salts are concerned to be offset. For these reasons, the most part of the data measured from MAS show the results similar with those obtained from other microorganism toxicity measurement, however, in case of ammonia or cyanide and alike toxic chemical materials, the results from MAS do not align with the results obtained from other microorganism toxicity measurements.
Additionally, in order to measure the toxicity of the sample through MAS, the lyophilized microorganism contained in each ampoule should be rehydrated one by one, and then mixed with aqueous sample, and luminescence thereof is measured by luminometer. Also, MAS is operated in a batch operation system, wherein an operator who measures luminescence of each individual sample manually, is required. Therefore, in order to successively measure and observe the water toxicity continuously by using MAS method, an ampoule containing luminescent microorganism is needed each measuring time, and thus an operator should be required to operate the toxicity measuring apparatus. Due to these problems, it has been a very laborious work to measure water toxicity successively by using apparatus developed until now. Therefore, it has been substantially impossible to monitor water toxicity continuously by means of the method that has been developed up to now for measuring water toxicity. Until presently, it has never been developed an automatic apparatus for measuring and monitoring water toxicity. Despite of importance of successive automatic monitoring of water toxicity, automatic measurements are limited within the scope of pH, DO, water level, flow rate, and et al . . It has been reported that automatic measuring and monitoring of COD and SS of several limited samples can partly be available. Moreover, the environmental monitoring system is mainly limited to air pollution field. Thus, in the water field, only monthly monitoring has been done in each water system, and continuous and automatic system for measuring and monitoring of water pollution has not yet been commercialized.
Disclosure of Invention
Therefore, the object of the present invention is to provide an apparatus that can measure water toxicity automatically and continuously.
The above object of the present invention is achieved by providing an automatic water toxicity measuring apparatus that comprises:
A sample supplier for gathering samples from water system at regular intervals and successively and for supplying test sample to luminescent microorganism;
Multi-well plates which are containing luminescent microorganism, of which the top of the well is sealed with gas-impermeable film; A multi-well plate storage unit that keeps and provides sequentially, multi-well plate in which each well contains lyophilized luminescent microorganism;
A transportation means for moving said numerous multi-well plates; An injection needle for providing test samples and reagents in an accurate dose into luminescent microorganism contained said multi-well plate; A sensor for detecting luminosity after the lapse of some times from injection of sample and reagent into luminescent microorganism; and
A control unit that control or regulate electrically or mechanically, the automatic operation of said each unit .
In addition, the apparatus of the present invention may further comprises a temperature control unit which control and/or maintain the interior temperature of the apparatus in constant.
Therefore, the object of the present invention is to provide an apparatus that water toxicity can be measured successively without handling of operator.
Another object of the present invention is to provide multi-well plates which are containing luminescent microorganism, of which the top of the well is sealed with gas-impermeable film.
Brief Description of the Drawings The above object and other advantages of the present invention will become more apparent by describing in detail a preferred embodiment thereof with reference to the attached drawings, in which:
FIG. 1 is a front view of the automatic water toxicity measuring apparatus of the present invention.
FIG. 2 is a plane view of the automatic water toxicity measuring apparatus of the present invention.
FIG. 3 is a right-side view of the automatic water toxicity measuring apparatus of the present invention. FIG. 4 is a left-side view of the automatic water toxicity measuring apparatus of the present invention. Best Mode for Carrying Out the Invention
Hereinafter, the apparatus of the present invention will be described in more detail. However, the automatic water toxicity measuring apparatus explained in below is given only for the explanation of embodiment of the present invention and not intended to limit the scope of the present invention.
The automatic water toxicity measuring apparatus of the present invention is characterized in comprising: A sample supplier for gathering samples from water system at regular intervals and successively, and for supplying test sample to luminescent microorganism;
Multi-well plates which are containing luminescent microorganism, of which the top of the well is sealed with gas-impermeable film;
A multi-well plate storage unit that keeps and provides sequentially, the multi-well plate in which each well contains lyophilized luminescent microorganism;
A transportation means for moving said multi-well plates; A reagents storage unit that stores and provides various reagents to injection needles;
Injection needles for providing samples and reagents in an accurate dose into luminescent microorganism contained said multi-well plate; A sensor for detecting luminosity after the lapse of some times from injection of sample and reagent into luminescent microorganism; and
A control unit that controls or regulates electronically or mechanically, the automatic operation of said each unit.
In addition, the apparatus of the present invention may further comprises a temperature control unit that preferably employs Peltier device and heat radiation board as the temperature controls means.
The said sample supplier is composed of circulation pump, sample-collecting block to collect aqueous samples from water system as like river, brook, lake, marshes, and etc., and sample supply tube. The said control unit initiates the circulation pump operation in preset time interval. Then the said circulation pump takes in the sample from water system through the sample supply tube. The aqueous sample collected by the said sample supplier is transferred into the injection needle by the operation of the said circulation pump through the sample supply tube. At the end of the sample supply tube of the sample supplier, there is a filter that prevents entering of non-liquid substances and also, is an apparatus for creating reverse stream to prevent clogging of the said filter with the non-liquid substances.
The said multi-well plate storage unit that stores and supplies the multi-well plates that contain lyophilized luminescent microorganism, is composed of rack which stores numerous multi-well plates in layering, operation means which moves the said rack in up/down directions, and the transportation means that transport the multi-well plate in front/back directions in order to take out the multi-well plates.
The luminescent microorganism of the present invention may be the freshwater luminescent microorganism obtained preferably from freshwater or prepared by gene manipulation. The luminescent microorganisms are set in each well of the multi-well plate and then lyophilized. The said well is purged with nitrogen then the front of the plate is sealed with gas-impermeable film thereby securing the long-term preservation of the microorganism. The rack of the present invention can store numerous multi-well plates. The operation means of rack consists of stepping motor and ball screw. The rack is driven by stepping motor to transport the multi-well plate in up/down directions thus desired plate can be selected. The transportation means for the multi-well plate is to bring out the plate from inside the rack and mounting the multi-well plate on the stage by moving the plate in front/back directions to desired positions. That is, the said transportation means adjusts the position of the multi-well plate wherein the reagent and test sample can be precisely injected on the desired well through the injection needle and wherein the sensor can precisely measure the luminosity of light emitted by the microorganism contained in desired well. The said transportation means consists of a pulley and belt mounted thereon, and stepping motor connected with pulley through the belt, and by the operation of the belt driven by the stepping motor, the transportation means take out the multi-well plate from the rack.
The said injection needle is composed of syringe, which takes in aqueous test sample, and reagent from sample supplier and reagent storage unit, and the piston operation means that control the amounts of test sample and reagents discharged. The said piston operation means composed of stepping motor and ball screw, pulley and belt to control the movement of piston through the operation of stepping motor. Therefore, the injected amount through the syringe of the present invention can be quantitatively controlled by the control of stepping motor to an extent of below μl . The position of the said syringe can be adjusted in up/down directions by means of pulley and the belt mounted thereon, ball spline and stepping motor, and thereby the movement of the syringe is driven by the operation of stepping motor. The transportation means for moving syringe and sensor in left/right directions consist of pulley, stepping motor, and linear motion (LM) guide, and the syringe and the sensor unit move along with the LM guide by the operation of stepping motor. The syringe and the sensor of the present invention are formed in one body and set. Thus, the syringe and the sensor move in left/right directions at the same time.
The said reagent storage unit comprises some bottles that contain various reagents and dilution buffer required for luminescence of microorganism.
The said sensor unit comprises of sensor and operation means thereof required for measuring the light reduction degree and luminosity of the luminescent microorganism. Preferably, photon multiplier tube(PMT) is employed as a sensor of the apparatus of the present invention. In case of the door of the apparatus is open, the control unit cut off the PMT operation power to secure the PMT safety.
The apparatus of the present invention may further comprise a temperature control unit. The temperature control unit of the present invention preferably employs Peltier device and heat radiation board as the temperature control means. The interior temperature of the apparatus of the present invention should be maintained in a certain level to secure luminescent reaction and appropriate storage of microorganism and reagents. Since the interior temperature of the apparatus of the present invention should be constant continuously throughout the four (4) seasons, cooling during the summer season and heating during the winter season are required. Therefore, the apparatus of the present invention employs Peltier device that can cool and/or heat as one device the interior of the apparatus, together with air circulation devices, to control the interior temperature of the apparatus.
The thermostatic system of the apparatus that ensure uniform temperature in the interior of the apparatus, can minimize measuring error, which may be caused by temperature change, and also can secures long-term storage of microorganism.
The control unit of the apparatus of the present invention controls the operation of the stepping motors that control precise positions of each units, the analog- digital converter that converts the output data of sensor into digital data that can be acknowledged by the computer, various solenoid valve that convert electric signal into mechanical signal, the power supplier that supplies required DC power, the temperature sensor that measures the interior temperature of the apparatus and/or the power controller that controls the heat generated from Peltier device. The control unit of the present invention comprises μ-COM, SRAM, EEPROM, RS232C serial port, exterior sensor, and SRAM and EEPROM constitute memory unit.
The analog-digital converter of the present invention converts the analog output data of the sensor (PMT) into digital data, which can be acknowledged by the computer. An automatic gain adjustment device is installed between the PMT sensor and the analog-digital converter in order to increase the applicability of the apparatus. That is, when the PMT output is weak, degree of gain is automatically increased, and contrarily when PMT output is strong, degree of gain is automatically reduced to maintain appropriate degree of gain. In the present invention, solenoid valves controlled by electronic signals generated from the said control unit, is used for selective operation of the circulation pump, PMT device, and the apparatus for creating reverse stream to prevent clogging of filter located at the end of the said sample supply tube.
The stepping motors of the apparatus rotate in accordance with the number of pulse inputted for purpose of the precise position control of each unit, and also are controlled by the control unit.
In the apparatus of the present invention, a graphic user interface (GUI ) commercialized for personal computers is employed. Thus, all information regarding to the operation status of the apparatus can be processed through the monitor screen of the computer. In addition, through the control unit, self-diagnosis, and detection of exterior environment change and respond thereto are processed automatically to secure the safety of the apparatus . The apparatus of the present invention can be controlled remotely and/or automatically operates to measures toxicity of aqueous sample and processes the data obtained therefrom for a prescribed period, without the operator' s manipulation by using reagents and luminescent microorganism stored in this apparatus.
Hereinafter, an embodiment of the apparatus of the present invention will be described in greater detail with reference to the following Figures. The Figures are given only for the illustrations of the invention and are not intended to limiting the scope of the present invention. In preferable embodiment of the apparatus of the present invention, the test sample supplier is composed of circulation pump (10), sample-collecting block (11) to collect aqueous samples from water system as like river, brook, lake, marshes, and etc., and sample supply tube (12). The control unit initiates the circulation pump (10) operation in preset time interval. Then the said circulation pump takes in the test sample from water system. The aqueous sample collected by the said test sample supplier is transferred into the injection needle by the operation of the said circulation pump (10) through the sample supply tube (12). At the end of the sample supply tube of the said sample supplier, there is a filter that prevents entering of non-liquid substances and also, is an apparatus for creating reverse stream to prevent clogging of the said filter with the non-liquid substances .
The said multi-well plate (17) storage unit that stores and supplies the multi-well plates that contain lyophilized luminescent microorganism, is composed of rack(18) which stores numerous multi-well plates (17) in layering, operation means (19) which moves the said rack in up/down directions, and the transportation means (20) that transport the multi-well plate (17) in front/back directions in order to take out the multi-well plates. The luminescent microorganism of the present invention may be the freshwater luminescent microorganism obtained preferably from freshwater or prepared by gene manipulation. The luminescent microorganisms are set in each well of the multi-well plate and then lyophilized. The said well is purged with nitrogen then the top of the plate is sealed with gas-impermeable film thereby securing the long-term preservation of the microorganism. The rack of the present invention can store numerous multi-well plates. The operation means of rack consists of stepping motor and ball screw. The rack is driven by stepping motor to transport the multi-well plate in up/down directions thus desired plate can be selected. The transportation means for the multi-well plate is to bring out the plate from inside the rack and mounting the multi-well plate on the stage by moving the plate in front/back directions to desired positions. That is, the said transportation means adjusts the position of the multi-well plate wherein the reagent and test sample can be precisely injected on the desired well through the injection needle and wherein the sensor can precisely measure the luminosity of light emitted by the microorganism contained in desired well. The said transportation means consists of a pulley and belt mounted thereon, and stepping motor connected with pulley through the belt, and by the operation of the belt driven by the stepping motor, the transportation means take out the multi-well plate from the rack.
The said injection needle is composed of syringe (13) which takes in aqueous test sample and reagent from sample supplier and reagent storage unit, the piston operation means (14) that control the amounts of test sample and reagents discharged, and syringe transportation means (15, 16) . The said piston operation means (14) composed of stepping motor and ball screw, pulley and belt to control the movement of piston through the operation of stepping motor. Therefore, the injected amount through the syringe of the present invention can be quantitatively controlled by the control of stepping motor to an extent of below μl . The position of the said syringe can be adjusted in up/down directions by the means (15) is composed of pulley and the belt mounted thereon, ball spline and stepping motor, and thereby the movement of the syringe is driven by the operation of stepping motor. The transportation means (16) for moving syringe and sensor in left/right directions consist of pulley, stepping motor, and linear motion (LM) guide, and the syringe and the sensor unit move along with the LM guide by the operation of stepping motor. The syringe and the sensor of the present invention are formed in one body and set. Thus, the syringe and the sensor move in left/right directions at the same time.
The luminescent microorganism used in the present invention may be freshwater luminescent microorganism separated from freshwater is desirable (Kim, E. -C . , T. - S. Byun, K. -J. Park, and K. -H. Lee, 1998, Toxicity Test Using a Luminescently Transformed Bacterium with an highly Increased Sensitivity, The 38th Korea Microorganism Scholarly Symposium and Spring Plenary Session; Park, K. -J., S. -J. Chun and K. -H. Lee, (1997), Development of toxicity test system using a luminescently transformed freshwater bacterium 52nd Korean As. Biol. Sci., Chunbuk Univ. ) .
In addition, the luminescent microorganism used in the apparatus of the present invention, all luminescent microorganisms that can be luminous on contact with chemical substances, can be used. These luminescent microorganisms are natural or prepared by gene manipulation. Various luminescent microorganisms may be employed in the apparatus of the present invention can be obtainable from microorganism depository throughout the world. Especially, YH9-RC unit of which accession number is KCTC 0730BP is preferable. The appropriate luminescent microorganisms used in the apparatus of the present invention and the proliferation method thereof are described in detail in Korea Patent Application No. 2000- 010763. Also, the method of lyophilizing luminescent microorganism used in the apparatus of the present invention is described in the Korea Patent Application No. 2000-37709.
In order to operate the apparatus of the present invention as long term-automated system, the rack stores numerous multi-well plate as like 384 well plate.
In order to arrange numerous plates efficiently, and to minimize the size of the apparatus, the preferred embodiment of the present invention employs rack structure wherein six (6) or more 384 well plates can be layered in two (2) row.
In case that the aqueous sample is tested every 10 minutes, 4,320 [ 6X24 (hours) X30 (days) ] of wells which contains luminescent microorganism are required to measure and monitor water toxicity for one(l) month. Since the apparatus of the present invention can store twelve (12) or more of 384 well plates, 4,608 [384X12] or more of aqueous samples can be measured. The rest of well[4, 608-4, 320=288] can be used as control. Thus, 24 wells can be used as control well per each 384 well plate. In preferred embodiment of the present invention, twelve (12) or more of 384 well are set in the apparatus. Therefore, upon measuring aqueous sample every 10 minutes, automatic operation of the apparatus for one ( 1 ) month is possible. By supplying multi-well plates every one(l) month, automatic continuous water toxicity monitoring can be achieved.
The solution storage unit of the apparatus of the present invention stores bottles (21) that are containing reagents, dilution solution required for the activation of the luminescent microorganisms. The sensor unit includes sensor (22) and operation means thereof, and the light reduction degree and luminosity of light emitted from luminescent microorganism is measured. Photon Multiplier Tube (PMT) is appropriately employed as the sensor device. The temperature control means of the present invention employs two (2) Peltier devices (23) and heat radiation board(24) .
Industrial Applicability The automatic water toxicity measuring apparatus of the present invention comprises a test sample supplier for gathering test samples from water system at regular intervals and successively and for supplying test sample to luminescent microorganism, a multi-well plate storage that keep and provide sequentially multi-well plate in which each well contains lyophilized luminescent microorganism, a transportation mean for moving said numerous multi-well plates sequentially, an injection needle for providing test samples and reagents in an accurate dose into luminescent microorganism contained said multi-well plate and a sensor for detecting luminosity after the lapse of some times from injection of test sample and reagent into luminescent microorganism, and a control unit that control or regulate electrically or mechanically the operation of said each unit automatically. By using the apparatus of the present invention, toxicity and contamination of water system can be measured successively without operator's manipulation until the reagents and luminescent microorganism stored in this apparatus are consumed. In addition, by supplying multi-well plates periodically, automatic continuous water toxicity monitoring can be achieved.
In conclusion, the automatic water toxicity measuring apparatus of the present invention is appropriate to be employed as a terminal for remote monitoring of the water toxicity.
While the present invention has been particularly shown and described with reference to particular embodiment thereof, it will be understood by those skilled in the art that various changes in form and details may be effected therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

What is claimed is
1. An automatic water toxicity measuring apparatus which employs luminescent microorganism, which comprises : a sample supplier for gathering samples from water system at regular intervals and successively, and for supplying test sample to luminescent microorganism; multi-well plates which are containing luminescent microorganism, of which the top of the well is sealed with gas-impermeable film; a multi-well plate storage unit that keeps and provides sequentially, the multi-well plate in which each well contains lyophilized luminescent microorganism; a transportation means for moving said multi-well plates; a reagents storage unit that stores and provides various reagents to injection needles;
Injection needles for providing samples and reagents in an accurate dose into luminescent microorganism contained said multi-well plate; a sensor for detecting luminosity after the lapse of some times from injection of sample and reagent into luminescent microorganism; and a control unit that controls or regulates electronically or mechanically, the automatic operation of said each unit.
2. The automatic water toxicity measuring apparatus according to claim 1, wherein said sample supplier comprises circulation pump, sample collecting block to collect aqueous samples, and sample supplying tube.
3. The automatic water toxicity measuring apparatus according to claim 1, wherein said luminescent microorganism is a freshwater luminescent microorganism obtained in freshwater.
4. The automatic water toxicity measuring apparatus according to claim 1, wherein said luminescent microorganism is a freshwater luminescent microorganism prepared by gene manipulation.
5. The automatic water toxicity measuring apparatus according to claim 1, wherein said multi-well plate storage unit comprises rack which stores numerous multi-well plate in layering, the rack operation means which moves the said multi-well plate in up/down directions, and the transportation means that transport the said plate in front/back directions from the rack.
6. The automatic water toxicity measuring apparatus according to claim 1, wherein said injection needle comprises syringe which takes in aqueous test sample and reagent from sample supplier and reagent storage unit, piston operation means that control the amounts output by the said syringe, and the transportation means for moving syringe.
7. The automatic water toxicity measuring apparatus according to claim 1, further comprising a temperature control means for maintaining the interior temperature of the apparatus in constant.
8. The automatic water toxicity measuring apparatus according to claim 1 or claim 2, wherein said the end of sample supply tube of the sample supplier comprises filter that prevents entering of non-liquid substances and apparatus that creates reverse stream to prevent clogging.
9. A multi-well plate which is containing luminescent microorganism, of which the top of the well is sealed with gas-impermeable film.
10. The multi-well plate according to claims 9, wherein said luminescent microorganism is freshwater luminescent microorganism.
11. The multi-well plate according to claims 10, wherein said luminescent microorganism is separated from freshwater .
12. The multi-well plate according to claims 9, wherein said luminescent microorganism is prepared by gene manipulation.
13. The multi-well plate according to claims 9, wherein said luminescent microorganism is lyophilized.
14. The multi-well plate according to claims 9, wherein said well is purged with Nitrogen.
PCT/KR2001/000074 2000-01-18 2001-01-17 Automatic water toxicity measuring apparatus WO2001053517A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE60124975T DE60124975T2 (en) 2000-01-18 2001-01-17 AUTOMATIC APPARATUS FOR MEASURING WATER TOXICITIES
EP01942673A EP1159442B1 (en) 2000-01-18 2001-01-17 Automatic water toxicity measuring apparatus
AU28892/01A AU2889201A (en) 2000-01-18 2001-01-17 Automatic water toxicity measuring apparatus

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20000002114 2000-01-18
KR2000/0002114 2000-01-18
KR2001/0002101 2001-01-15
KR10-2001-0002101A KR100414784B1 (en) 2000-01-18 2001-01-15 Automatic Water Toxicity Measuring Apparatus

Publications (1)

Publication Number Publication Date
WO2001053517A1 true WO2001053517A1 (en) 2001-07-26

Family

ID=26636764

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2001/000074 WO2001053517A1 (en) 2000-01-18 2001-01-17 Automatic water toxicity measuring apparatus

Country Status (9)

Country Link
US (1) US6436698B2 (en)
EP (1) EP1159442B1 (en)
JP (1) JP2001242159A (en)
KR (1) KR100414784B1 (en)
CN (1) CN1218045C (en)
AT (1) ATE347611T1 (en)
AU (1) AU2889201A (en)
DE (1) DE60124975T2 (en)
WO (1) WO2001053517A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1148141A2 (en) * 2000-03-03 2001-10-24 Lee, Kyu-Ho, Environmental Science Major Hankuk University of Foreign Studies Bioluminescent organism for detecting toxic substances
WO2008110375A1 (en) * 2007-03-14 2008-09-18 Fraunhofer Gesellschaft Zur Förderung Der Angewandten Forschung E. V. Device and method for the online control of drinking water on human tolerance within a drinking water supply network
ES2637236A1 (en) * 2016-04-11 2017-10-11 Universidad De Cádiz Mobile unit for the evaluation and control of the impact of effluents from sewage treatment plants in marine ecosystems. (Machine-translation by Google Translate, not legally binding)
CN108982889A (en) * 2018-06-25 2018-12-11 中国科学院重庆绿色智能技术研究院 A kind of synthetic biological toxicity in water on-line monitoring automatic analytical instrument

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100483580B1 (en) * 2002-04-27 2005-04-18 한국바이오시스템(주) Method for sensing toxic material in water using microorganism cell
IL162842A0 (en) * 2004-07-04 2005-11-20 Blue I Technologies Ltd Indictor strip and a device for automatic testing of liquids
US20070292844A1 (en) * 2006-03-22 2007-12-20 Northrop Grumman Corporation Enhanced biohazard detection system
AT505306B1 (en) * 2007-07-09 2008-12-15 Mbonline Gmbh DEVICE FOR MONITORING WATER TO MICROBIAL CASES
CN102175828B (en) * 2011-01-20 2014-06-11 济南市供排水监测中心 Method for evaluating water quality health risk with chromium ion as standard toxic substance
CN102636545B (en) * 2012-03-16 2013-11-06 北京航空航天大学 Early warning device for biomass with comprehensive toxicity in water
ITRM20120218A1 (en) * 2012-05-15 2013-11-16 Pompeo Moscetta DEVICE AND METHOD FOR ANALYSIS AND MONITORING OF TOXICITY IN WATERS.
KR101399453B1 (en) 2012-08-20 2014-05-28 한국건설기술연구원 Ecology Toxicity Monitoring Device and Method Thereof
CN103018419B (en) * 2012-12-18 2015-04-08 南京大学 Method for determining risk of toxic pollutants in river water of high content of sand
CN103308659B (en) * 2013-07-05 2015-05-20 中国科学院合肥物质科学研究院 Water body organic pollution toxicity assessment method based on human-mouse hybridoma cell
DE102014118138A1 (en) * 2014-12-08 2016-06-09 Lar Process Analysers Ag Analysis arrangement for water and wastewater analysis
EP4098984A1 (en) 2017-09-19 2022-12-07 Beckman Coulter Inc. Analog light measuring and photon counting in chemiluminescence measurements
KR101951330B1 (en) * 2018-03-27 2019-02-22 주식회사 켐토피아 Device for monitoring quality of water
CN108776206A (en) * 2018-07-26 2018-11-09 俞怡蒙 A kind of portable smart water quality detector and its detection method
CN109839289B (en) * 2019-02-20 2021-07-09 吉林师范大学 Early warning device based on biological population chunk discernment and water pollution
CN111189782A (en) * 2020-02-26 2020-05-22 杭州电子科技大学 Water quality detection equipment for fresh water biotoxicity monitoring system
CN111785117A (en) * 2020-07-17 2020-10-16 盐城工学院 Simulation experiment device and experiment method for attaching biological membrane to multi-material water delivery pipeline
CN113267488A (en) * 2021-06-02 2021-08-17 上海泽安实业有限公司 Automatic detection equipment and detection method for toxicity of water sample

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0025350A2 (en) * 1979-09-05 1981-03-18 Dynatech Ag Apparatus for detecting luminescent reactions
EP0757096A2 (en) * 1995-07-29 1997-02-05 Siemens Plc Improvements in or relating to aqueous sample testing apparatus
WO1998021347A1 (en) * 1996-11-15 1998-05-22 E.I. Du Pont De Nemours And Company A small volume, highly sensitive method for detecting environmental insults

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4772453A (en) * 1985-03-01 1988-09-20 Lisenbee Wayne F Luminiscence measurement arrangement
GB2211607A (en) * 1987-10-29 1989-07-05 Cardiff Energy & Resources Injection systems for luminometers
US5082628A (en) * 1989-09-19 1992-01-21 Park Pharmaceuticals, Inc. Luminometer
US6017722A (en) * 1991-04-04 2000-01-25 Board Of Regents, The University Of Texas System Luminous bacteria and methods for the isolation, identification and quantitation of toxicants
US5380487A (en) * 1992-05-05 1995-01-10 Pasteur Sanofi Diagnostics Device for automatic chemical analysis
IL107815A (en) * 1992-12-04 2003-12-10 Du Pont Genetic constructs comprising a stress-responsive promoter linked to a lux reporter operon and methods of use in environmental testing
GB2303912B (en) * 1995-07-29 1999-06-16 Siemens Plc Improvements in or relating to aqueous sample testing apparatus
JPH09107990A (en) * 1995-10-17 1997-04-28 Meidensha Corp Automatic detection of poison and system therefor
US5798263A (en) * 1996-09-05 1998-08-25 Promega Corporation Apparatus for quantifying dual-luminescent reporter assays
KR19990069400A (en) * 1998-02-09 1999-09-06 김효근 Bioreactor with optical fiber and toxicity detection method using the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0025350A2 (en) * 1979-09-05 1981-03-18 Dynatech Ag Apparatus for detecting luminescent reactions
EP0757096A2 (en) * 1995-07-29 1997-02-05 Siemens Plc Improvements in or relating to aqueous sample testing apparatus
WO1998021347A1 (en) * 1996-11-15 1998-05-22 E.I. Du Pont De Nemours And Company A small volume, highly sensitive method for detecting environmental insults

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1148141A2 (en) * 2000-03-03 2001-10-24 Lee, Kyu-Ho, Environmental Science Major Hankuk University of Foreign Studies Bioluminescent organism for detecting toxic substances
EP1148141A3 (en) * 2000-03-03 2004-07-21 Lee, Kyu-Ho, Environmental Science Major Hankuk University of Foreign Studies Bioluminescent organism for detecting toxic substances
WO2008110375A1 (en) * 2007-03-14 2008-09-18 Fraunhofer Gesellschaft Zur Förderung Der Angewandten Forschung E. V. Device and method for the online control of drinking water on human tolerance within a drinking water supply network
ES2637236A1 (en) * 2016-04-11 2017-10-11 Universidad De Cádiz Mobile unit for the evaluation and control of the impact of effluents from sewage treatment plants in marine ecosystems. (Machine-translation by Google Translate, not legally binding)
WO2017178670A1 (en) * 2016-04-11 2017-10-19 Universidad De Cádiz Mobile unit for for assessing and controlling the impact of effluent from wastewater treatment plants on marine ecosystems
CN108982889A (en) * 2018-06-25 2018-12-11 中国科学院重庆绿色智能技术研究院 A kind of synthetic biological toxicity in water on-line monitoring automatic analytical instrument

Also Published As

Publication number Publication date
JP2001242159A (en) 2001-09-07
KR20010086342A (en) 2001-09-10
AU2889201A (en) 2001-07-31
DE60124975T2 (en) 2007-09-20
DE60124975D1 (en) 2007-01-18
CN1358231A (en) 2002-07-10
EP1159442B1 (en) 2006-12-06
KR100414784B1 (en) 2004-01-13
EP1159442A1 (en) 2001-12-05
CN1218045C (en) 2005-09-07
US6436698B2 (en) 2002-08-20
ATE347611T1 (en) 2006-12-15
US20010026936A1 (en) 2001-10-04

Similar Documents

Publication Publication Date Title
EP1159442B1 (en) Automatic water toxicity measuring apparatus
US7704457B2 (en) Automatic, field portable analyzer using discrete sample aliquots
US3676679A (en) Apparatus for detecting biological activity
US5720922A (en) Instrument incorporating electrochemiluminescent technology
US3935073A (en) Method for detecting bacteria
EA000079B1 (en) An automated analyzing apparatus for measuring water quality with a cylinder-shaped syringe unit
CN111707659A (en) Luminous bacteria-based water quality comprehensive biotoxicity analyzer
RU2228523C2 (en) METHODS MEASURING RATES OF NITRIFICATION AND DENITRIFICATION AND NOx IN LIQUID
KR101810810B1 (en) Method and Apparatus for Determining Microorganisms in a Water Sample
EP1141702B1 (en) Method for measuring nitrification rates in biochemical processes
KR101087721B1 (en) Luminometer
GB2605648A (en) Auto-sampler device and method of autosampling
KR100502991B1 (en) A device and method for checking and alarming the quality of water automatically by using microbe
WO1996005501A1 (en) Apparatus and methods for carrying out electrochemiluminescence test measurements
AU2017204090A1 (en) An apparatus and system for investigating properties of substrates and/or water bodies and a method of using same
CN212568486U (en) Luminous bacteria-based water quality comprehensive biotoxicity analyzer
JP5017647B2 (en) Water quality inspection apparatus and method
KR20000031934A (en) Automatic water toxicant measuring instrument using immobilized photogenic microorganism
KR100358448B1 (en) Apparatus and method for performing electrochemical luminescence experiment measurements
Lewis et al. Laboratory procedure for determining substrate removal rate coefficients for biofilms
Amundsen et al. Gastight sampler for sequential streamflow sampling
WO2004090518A1 (en) Light emission assay apparatus
Newman News from the fall ACS national meeting: Analytical chemistry and the Chemical Weapons Convention
Bradley Science: A cellular litmus test
Wang et al. Improving on-line water biological toxicity analyzer based on luminous bacteria

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 01800058.4

Country of ref document: CN

AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

WWE Wipo information: entry into national phase

Ref document number: 2001942673

Country of ref document: EP

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWP Wipo information: published in national office

Ref document number: 2001942673

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: JP

WWG Wipo information: grant in national office

Ref document number: 2001942673

Country of ref document: EP