CN220552775U - Heavy metal ion detection device based on fluorescent probe membrane material - Google Patents
Heavy metal ion detection device based on fluorescent probe membrane material Download PDFInfo
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- CN220552775U CN220552775U CN202321889061.9U CN202321889061U CN220552775U CN 220552775 U CN220552775 U CN 220552775U CN 202321889061 U CN202321889061 U CN 202321889061U CN 220552775 U CN220552775 U CN 220552775U
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- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 107
- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 239000000463 material Substances 0.000 title claims abstract description 18
- 239000012528 membrane Substances 0.000 title claims abstract description 16
- 239000007850 fluorescent dye Substances 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 230000003287 optical effect Effects 0.000 claims abstract description 36
- 239000003673 groundwater Substances 0.000 claims abstract description 32
- 239000000523 sample Substances 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 150000002500 ions Chemical class 0.000 claims description 25
- 239000011259 mixed solution Substances 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 239000012295 chemical reaction liquid Substances 0.000 claims description 9
- 230000010354 integration Effects 0.000 claims description 6
- 230000035945 sensitivity Effects 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 230000000877 morphologic effect Effects 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 abstract description 3
- 230000008595 infiltration Effects 0.000 abstract 1
- 238000001764 infiltration Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 7
- 239000013307 optical fiber Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000005253 cladding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000012625 in-situ measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001917 fluorescence detection Methods 0.000 description 1
- 210000000987 immune system Anatomy 0.000 description 1
- 238000001499 laser induced fluorescence spectroscopy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 210000001835 viscera Anatomy 0.000 description 1
Landscapes
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
The utility model discloses a heavy metal ion detection device based on a fluorescent probe membrane material, and relates to the field of in-situ detection of heavy metal concentration and morphology in groundwater. The device mainly comprises a sample liquid cup, a stirrer, a porous structure, a heavy metal film and an optical system. The device adopts porous structure, and groundwater can be through the abundant infiltration of this structure realization heavy metal membrane, has improved the reaction rate of both, and the quick effective detection of heavy metal concentration and form in groundwater can be realized to the cooperation current detection device, has characteristics such as small, extensive applicability, stability are high, detection speed are fast.
Description
Technical Field
The utility model relates to the field of in-situ detection of heavy metal concentration and morphology in groundwater, in particular to a heavy metal ion detection device based on a fluorescent probe membrane material.
Background
With the rapid development of industry, the problems of heavy metal pollution in soil, atmosphere and water are increasing, and the heavy metal pollution can enter human bodies through skin contact or oral administration and other ways. Exceeding of heavy metals in the human body may cause damage to internal organs of the body, and prolonged exposure to heavy metals may also cause degeneration of nervous system, immune system and body muscles, possibly even cancer. Therefore, the concentration of heavy metals in natural environment is closely related to human health, and the problem of heavy metal pollution in water environment is widely concerned, so that the detection and quantitative analysis of the types and the concentrations of the heavy metals in water are required.
At present, a fluorescence spectrophotometer based on a fluorescence detection technology has been widely used in the field of detection of heavy metals in water, and has the advantages of high sensitivity, rapidness, no invasiveness and the like, but the device has a complex structure and high price, and in-situ measurement of the heavy metals cannot be realized.
To solve this problem, patent (CN 113866141 a) provides an in-situ detection device for heavy metals in groundwater based on laser-induced fluorescence technology, which comprises a waterproof cavity, an optical system, a heavy metal film and a signal processing and controlling unit. The waterproof cavity is of a sealing structure, a waterproof interface is arranged above the waterproof cavity, and the optical system is arranged in the waterproof cavity and comprises a laser diode, an excitation light collimation focusing lens group, an excitation light trap, a fluorescent collimation lens, an optical filter, a fluorescent focusing lens and an optical fiber. The heavy metal film has a double-layer film structure, the outer layer is an interception film, and the inner layer is a response film. The signal processing and controlling unit comprises a control center, a light source driving module and a photoelectric detector.
There are still some problems with this prior art: 1) The heavy metal film of the device is directly attached to the surface of the optical window, and easily falls off along with the extension of the service time, so that the service life of the device is influenced; 2) The contact area between the heavy metal film and the underground water of the device is too small, the heavy metal film and the underground water are required to be combined for a long time, and the detection efficiency is too low; 3) The whole integrated level of the device is not high, and the device is limited to a specific detection environment, so that the device is inconvenient for the assembly of the whole machine.
Disclosure of Invention
First, the present utility model solves the problems
Aiming at the defects of the existing detection device, the utility model provides the heavy metal ion detection device based on the fluorescent probe film material, which can improve the reaction rate of liquid and a heavy metal film, and can realize the rapid and effective detection of the concentration and the form of heavy metal in underground water by matching with the existing detection device, and has the characteristics of small volume, wide application range, high stability, high detection speed and the like.
(II) technical solution of the utility model
The heavy metal ion detection device based on the fluorescent probe membrane material is characterized in that the underwater part comprises a waterproof cavity, a servo motor, a sample liquid cup filled with reaction liquid, a stirrer, a porous structure, a water intake pipe, a heavy metal membrane and an optical system; the upper part of the sample liquid cup is connected with the waterproof cavity, the optical system is arranged in the waterproof cavity, and the lower part of the sample liquid cup is connected with the water intake pipe, so that groundwater to be tested is stored in the sample liquid cup after passing through the water intake pipe;
one end of the stirrer stretches into the sample liquid cup, the other end of the stirrer is connected with the servo motor, and the servo motor drives the stirrer to work, so that groundwater to be tested and reaction liquid are fully fused to form mixed liquid;
the porous structure is cylindrical, one end of the porous structure is connected with the optical system, the other end of the porous structure is arranged in the sample liquid cup, a plurality of through holes are uniformly distributed on the cylindrical surface of the porous structure, and the heavy metal film is embedded in the center of the cylindrical porous structure. The heavy metal film consists of an inner film and an outer film, and the outer film is positioned at one end far away from the optical system and is used for filtering impurities of groundwater to be detected so as to enable heavy metal ions in the groundwater to be detected to pass through; the inner layer film is positioned at one end close to the optical system, and heavy metal ions in the filtered mixed solution are adsorbed on the lower surface of the inner layer film; meanwhile, the mixed solution is contacted with the upper surface of the inner layer film through the through hole, and heavy metal ions in the mixed solution are adsorbed on the upper surface of the inner layer film. When the mixed solution is fully contacted with the heavy metal film, the laser emitted from the optical system can excite fluorescence reaction on the surface of the heavy metal film.
Further, the outside of the porous structure is fixed with the waterproof cavity by adopting a threaded structure, and the middle part of the cylinder is in a form of threads and gaskets, so that the heavy metal film is fully fixed; a plurality of through holes are uniformly distributed on the surface of the cylinder, and underground water can pass through the cylinder structure through the through holes, so that the heavy metal film is completely wrapped by the mixed liquid.
Further, the sample liquid cup is made of glass material, and forms a sealing structure together with the waterproof cavity for storing groundwater to be tested; the upper part of the sample liquid cup is connected with the waterproof cavity by adopting a thread sealing structure, so that the assembly and integration of the whole machine are facilitated; a connecting port is reserved at the upper part of the sample liquid cup and is used for being connected with a stirrer.
Furthermore, the optical system at least comprises 5 lenses, has the characteristics of large numerical aperture and high sensitivity, can rapidly and accurately collect fluorescence signals excited on the heavy metal film, and further obtains the concentration and morphological distribution of heavy metals in underground water through computer analysis. The optical system has small volume and compact structure, thereby ensuring high integration level and miniaturization of the whole machine.
Furthermore, the reaction solution is a mixed solution composed of HCL of 0.5mol/L and NaOH of 0.5mol/L, and heavy metal ions to be detected are more easily adsorbed with the heavy metal film under specific acid-base conditions.
(III) technical effects of the utility model
1) The utility model adopts a porous structure, so that the heavy metal film is wrapped by groundwater, the contact area of the heavy metal film and the groundwater is increased, and the detection efficiency of the heavy metal concentration is greatly improved.
2) The heavy metal film is fixed in the cavity by adopting the sealing device, and does not fall off along with the extension of the service time, so that the service life of the device is prolonged.
3) The utility model greatly improves the integration level of the device and is convenient for the assembly of the whole machine.
Drawings
FIG. 1 is a schematic diagram of a device for detecting the concentration of heavy metals in groundwater.
Fig. 2 is a schematic view of the structure of the underwater portion device.
Fig. 3 is a schematic view of a device of porous structure.
Fig. 4 is a cross-sectional view of a porous structure device.
In the figure: 1-computer, 2-optic fibre, 3-underwater device, 4-groundwater, 5-waterproof cavity, 6-servo motor, 7-porous structure, 8-agitator, 9-appearance liquid cup, 10-water intake pipe, 11-screw thread structure, 12-through-hole, 13-packing ring, 14-heavy metal membrane, 15-optical system.
Detailed Description
In order to more clearly describe the technical scheme of the utility model, the utility model is further described below by referring to the attached drawings in combination with specific embodiments.
Fig. 1 schematically shows a schematic diagram of a device for detecting the concentration of heavy metals in groundwater. The device mainly comprises a 1-computer, a 2-optical fiber and a 3-underwater device. The underwater device is used for collecting groundwater to be tested, so that the groundwater to be tested can be fully contacted with the heavy metal film; the optical fiber is used for transmitting fluorescent signals excited on the heavy metal film to the computer, the optical fiber cladding adopts a waterproof material, and the joint of the optical fiber cladding and the underwater device adopts a sealing structure, so that the normal operation of the optical system is ensured. The computer is provided with spectral analysis software and is used for analyzing the concentration and the morphology of heavy metals in underground water.
The sample liquid cup is made of glass materials, and forms a sealing structure together with the waterproof cavity for storing groundwater to be tested. The upper part of the sample liquid cup is connected with the waterproof cavity by adopting a thread sealing structure, so that the assembly and integration of the whole machine are facilitated; a connecting port is reserved at the upper part of the sample liquid cup and is used for being connected with a stirrer.
One end of the stirrer stretches into the sample liquid cup, and the other end of the stirrer is connected with the servo motor. The servo motor can drive the stirrer to work, so that the groundwater to be tested and the reaction solution are fully fused, and a mixed solution is formed. The reaction solution is a mixed solution composed of HCL of 0.5mol/L and NaOH of 0.5mol/L, and heavy metal ions to be detected are more easily adsorbed with the heavy metal film under specific acid-base conditions.
The porous structure is fixed in the waterproof cavity, one end of the porous structure is connected with the optical system, and the other end of the porous structure is contacted with groundwater to be detected in the sample liquid cup. The structure is made of waterproof materials and is integrally cylindrical. The outside of the cylinder is fixed with the waterproof cavity by adopting a thread structure, so that the sealing effect of the device is ensured; the middle part of the cylinder adopts the form of screw threads and gaskets, so that the heavy metal film is fully fixed, the problem that the heavy metal film falls off along with the extension of the service time is avoided, and the service life of the device is prolonged. A plurality of through holes are uniformly distributed on the surface of the cylinder, and underground water can pass through the cylinder structure through the through holes, so that the upper surface and the lower surface of the heavy metal film are completely wrapped. In the existing detection device, the heavy metal film is attached to the surface of the optical window, and only the lower surface of the heavy metal film is contacted with the underground water solution.
The heavy metal film consists of an inner film and an outer film, and the outer film is positioned at one end far away from the optical system and is used for filtering impurities of groundwater to be detected so as to enable heavy metal ions in the groundwater to be detected to pass through; the inner layer film is positioned at one end close to the optical system, and heavy metal ions in the filtered mixed solution are adsorbed on the lower surface of the inner layer film; meanwhile, the mixed solution is contacted with the upper surface of the inner layer film through the through hole, and heavy metal ions in the mixed solution are adsorbed on the upper surface of the inner layer film. When the mixed solution is fully mixed with the heavy metal film, the laser emitted from the optical system 15 excites fluorescence reaction on the surface of the heavy metal film.
The optical system is composed of at least 5 lenses, has the characteristics of large numerical aperture and high sensitivity, can rapidly and accurately collect fluorescence signals excited on the heavy metal film, and further obtains the concentration and morphological distribution of heavy metals in underground water through computer analysis. The optical system has small volume and compact structure, thereby ensuring the high concentration degree and miniaturization of the whole machine.
Fig. 2 shows a schematic view of the structure of the underwater portion device. The part mainly comprises a waterproof cavity 5, a servo motor 6, a sample liquid cup 9 filled with reaction liquid, a stirrer 8, a porous structure 7, a water intake pipe 10, a heavy metal film 14 and an optical system 15. The sample liquid cup is made of glass materials, and forms a sealing structure together with the waterproof cavity for storing groundwater to be tested. The upper part of the sample liquid cup is connected with the waterproof cavity by adopting a thread sealing structure, so that the assembly and integration of the whole machine are facilitated; a connecting port is reserved at the upper part of the sample liquid cup and is used for being connected with a stirrer. One end of the stirrer extends into the sample liquid cup filled with the reaction liquid, and the other end of the stirrer is connected with the servo motor. The servo motor can drive the stirrer to work, so that the groundwater to be tested and the reaction solution are fully fused, and a mixed solution is formed. The reaction solution is a mixed solution composed of HCL of 0.5mol/L and NaOH of 0.5mol/L, and heavy metal ions to be detected are more easily adsorbed with the heavy metal film under specific acid-base conditions. The optical system is composed of at least 5 lenses, has the characteristics of large numerical aperture and high sensitivity, can rapidly and accurately collect fluorescence signals excited on the heavy metal film, and further obtains the concentration and morphological distribution of heavy metals in underground water through computer analysis. The optical system has small volume and compact structure, thereby ensuring the high concentration degree and miniaturization of the whole machine.
Fig. 3 and 4 show a schematic view and a sectional view of a porous structure device, respectively, mainly composed of a through hole 12, a gasket 13 and a heavy metal film 14. The porous structure is fixed in the waterproof cavity, one end of the porous structure is connected with the optical system, and the other end of the porous structure is contacted with groundwater to be detected in the sample liquid cup. The structure is made of waterproof materials and is integrally cylindrical. The outside of the cylinder is fixed with the waterproof cavity by adopting a thread structure 11, so that the sealing effect of the device is ensured; the middle part of the cylinder adopts a form of threads and gaskets, a heavy metal film 14 is embedded in the center of the cylinder, the heavy metal film consists of an inner film and an outer film, and the outer film is positioned at one end far away from the optical system and is used for filtering impurities of groundwater to be tested so as to enable heavy metal ions in the groundwater to be tested to pass through; the inner layer film is positioned at one end close to the optical system, and heavy metal ions in the filtered mixed solution are adsorbed on the lower surface of the inner layer film; meanwhile, the mixed solution is contacted with the upper surface of the inner layer film through the through hole, and heavy metal ions in the mixed solution are adsorbed on the upper surface of the inner layer film. After the mixed solution is fully mixed with the heavy metal film, the laser emitted from the optical system 15 excites fluorescence reaction on the surface of the heavy metal film, and the concentration and the form of heavy metal in underground water can be obtained by collecting and analyzing the intensity of fluorescence signals.
The main flow of the method for detecting the concentration of heavy metals in underground water is as follows: 1. and (3) carrying out a calibration experiment of the heavy metal concentration in advance, and summarizing the relationship between the heavy metal concentration and the response intensity of the excited fluorescent signal. 2. The underwater device is placed in water, liquid to be detected is obtained through a water intake pipe, the liquid to be detected is placed in a sample liquid cup into which the reaction liquid is poured, a servo motor is started, and the liquid to be detected and the reaction liquid are fully fused by using a stirrer. 3. The heavy metal film is fully wrapped by the liquid to be tested through the porous structure, and the heavy metal film and the liquid to be tested are fully fused to excite the heavy metal film to generate a fluorescence effect. 4. And (3) transmitting the fluorescent signal to a computer through an optical system and an optical fiber, and combining the calibration result of the step (1) so as to realize in-situ measurement of the concentration of heavy metals in the underground water.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (5)
1. The heavy metal ion detection device based on the fluorescent probe membrane material is characterized in that the underwater part comprises a waterproof cavity, a servo motor, a sample liquid cup filled with reaction liquid, a stirrer, a porous structure, a water intake pipe, a heavy metal membrane and an optical system; the upper part of the sample liquid cup is connected with the waterproof cavity, the optical system is arranged in the waterproof cavity, and the lower part of the sample liquid cup is connected with the water intake pipe, so that groundwater to be tested is stored in the sample liquid cup after passing through the water intake pipe;
one end of the stirrer stretches into the sample liquid cup, the other end of the stirrer is connected with the servo motor, and the servo motor drives the stirrer to work, so that groundwater to be tested and reaction liquid are fully fused to form mixed liquid;
the porous structure is in a cylindrical shape, one end of the porous structure is connected with the optical system, the other end of the porous structure is arranged in the sample liquid cup, a plurality of through holes are uniformly distributed on the cylindrical surface, and the heavy metal film is embedded in the center of the cylindrical porous structure;
the heavy metal film consists of an inner film and an outer film, and the outer film is positioned at one end far away from the optical system and is used for filtering impurities of groundwater to be detected so as to enable heavy metal ions in the groundwater to be detected to pass through; the inner layer film is positioned at one end close to the optical system, and heavy metal ions in the filtered mixed solution are adsorbed on the lower surface of the inner layer film; meanwhile, the mixed solution is contacted with the upper surface of the inner layer film through the through hole, heavy metal ions in the mixed solution are adsorbed on the upper surface of the inner layer film, and when the mixed solution is fully contacted with the heavy metal film, the laser emitted by the optical system can excite fluorescent reaction on the surface of the heavy metal film.
2. The heavy metal ion detection device based on the fluorescent probe membrane material according to claim 1, wherein the outer part of the porous structure is fixed with the waterproof cavity by adopting a threaded structure, and the middle part of the cylinder is in a form of threads and gaskets, so that the heavy metal membrane is fully fixed; a plurality of through holes are uniformly distributed on the surface of the cylinder, and underground water can pass through the cylinder structure through the through holes, so that the heavy metal film is completely wrapped by the mixed liquid.
3. The heavy metal ion detection device based on the fluorescent probe film material according to claim 1, wherein the sample liquid cup is made of glass material, and forms a sealing structure together with the waterproof cavity for storing groundwater to be detected; the upper part of the sample liquid cup is connected with the waterproof cavity by adopting a thread sealing structure, so that the assembly and integration of the whole machine are facilitated; a connecting port is reserved at the upper part of the sample liquid cup and is used for being connected with a stirrer.
4. The heavy metal ion detection device based on the fluorescent probe membrane material according to claim 1, wherein the optical system is composed of at least 5 lenses, has the characteristics of large numerical aperture and high sensitivity, can rapidly and accurately collect fluorescent signals excited on the heavy metal membrane, and further obtains the concentration and the morphological distribution of heavy metals in underground water through computer analysis.
5. The heavy metal ion detection device based on the fluorescent probe membrane material according to claim 1, wherein the reaction liquid is a mixed liquid composed of 0.5mol/L of HCL and 0.5mol/L of NaOH, and heavy metal ions to be detected are more easily adsorbed with the heavy metal membrane under specific acid-base conditions.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321889061.9U CN220552775U (en) | 2023-07-18 | 2023-07-18 | Heavy metal ion detection device based on fluorescent probe membrane material |
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| CN202321889061.9U CN220552775U (en) | 2023-07-18 | 2023-07-18 | Heavy metal ion detection device based on fluorescent probe membrane material |
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| CN202321889061.9U Active CN220552775U (en) | 2023-07-18 | 2023-07-18 | Heavy metal ion detection device based on fluorescent probe membrane material |
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