CN208399243U - A kind of Handheld detection device of quick detection elements mercury - Google Patents
A kind of Handheld detection device of quick detection elements mercury Download PDFInfo
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- CN208399243U CN208399243U CN201821089621.1U CN201821089621U CN208399243U CN 208399243 U CN208399243 U CN 208399243U CN 201821089621 U CN201821089621 U CN 201821089621U CN 208399243 U CN208399243 U CN 208399243U
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Abstract
The utility model relates to a kind of Handheld detection devices of quick detection elements mercury, including air intake, gas preprocessor, gas separator, first solenoid valve, flow controller, mercury sensor, exhaust purifier, second solenoid valve and exhaust outlet are sequentially connected the detection gas circuit and the first solenoid valve of composition, flow controller, mercury sensor, exhaust purifier and second solenoid valve are sequentially connected the purification gas circuit of the closed circulation of composition, mercury sensor is collection enrichment and is detected on integrated mercury sensor, flow controller, mercury sensor, first solenoid valve and second solenoid valve are connected with governor circuit respectively.Governor circuit controls the conducting direction of the first, second solenoid valve, realizes detection gas circuit and purifies the switching of gas circuit；Mercury sensor is enriched with and is detected to element mercury, and the signal that will test is conveyed to governor circuit.The utility model can accurately and fast detect the elemental mercury concentration in gas, and convenient for hand-held and carrying, detection time is short, and detection efficiency is high.
Description
Technical field
The utility model relates to a kind of a kind of inspections of the hand-held of element mercury detection device more particularly to quick detection elements mercury
Survey device.
Background technique
Mercury is the heavy metal element for being uniquely mainly present in atmosphere with gas phase.Global biogeochemical of the atmosphere in mercury
It learns and plays an important role in circulation.State total mercury accounts for about 90% of Mercury In The Air or more, wherein based on gaseous elemental mercury.
Gaseous elemental mercury has lower water-soluble and dry deposition rate, and chemical reaction inertia is big, is that generally acknowledged global air is dirty
Contaminate one of object.Human activity such as burning of fossil-fueled, municipal refuse, metal smelt, cement manufacture etc. and natural process such as fire
Mountain and geothermal activity, crustal movement etc. can discharge mercury to atmosphere.
Have evolved into ripe currently, being applied to the mercury vapourmeter that laboratory and on-line continuous are observed, the working principle of instrument includes
Cold-vapour atomic absorption method, Pressurized sample digestion and golden film electric-resistivity method.But the research of portable mercury vapourmeter is also less, mainly base
In the improvement that in-line analyzer carries out, usually using Atomic absorption combination Zeemen effect as Observation principle, due to being surveyed by optics
Mercury sensitivity and the influence of stability, this kind of mercury vapourmeter generally can be enriched with hot interpretation of the law using spun gold in the pretreatment of sample gas and improve instrument
The detection sensitivity and anti-interference of device, but the mercury-traping tube used generally requires periodic replacement, and needs to be enriched with the mistake of release
Journey increases time of measuring, and equipment instrument is also larger, and power consumption is higher, cannot achieve the rapid survey in field.
Summary of the invention
In order to solve the above-mentioned technical problem the utility model, provides a kind of hand-held detection dress of quick detection elements mercury
It sets, detection gas circuit and purification gas circuit is automatically switched by control circuit, it, can essence using being enriched with and detecting integrated mercury sensor
Really, the elemental mercury concentration being quickly detected under test gas, it is small in size, convenient for hand-held and carrying, easy to operate, detection time
Short, detection efficiency is high.
Above technical problems of the utility model are mainly solved by the following technical scheme: the utility model packet
Include air intake, gas preprocessor, gas separator, flow controller, mercury sensor, exhaust purifier, exhaust outlet and first
Solenoid valve, second solenoid valve, governor circuit, air intake, gas preprocessor, gas separator, the first solenoid valve, flow control
Device, mercury sensor, exhaust purifier, second solenoid valve and exhaust outlet are sequentially connected, and second solenoid valve passes through pipeline and and first
Solenoid valve is connected, and mercury sensor is collection enrichment and is detected on integrated mercury sensor, flow controller, mercury sensor, the first electricity
Magnet valve and second solenoid valve are connected with governor circuit respectively.Air intake, gas preprocessor, gas separator, the first solenoid valve,
Flow controller, mercury sensor, exhaust purifier, second solenoid valve and exhaust outlet are sequentially connected composition detection gas circuit；First electricity
Magnet valve, flow controller, mercury sensor, exhaust purifier and second solenoid valve are sequentially connected the purified gas for constituting closed circulation
Road.Governor circuit controls the conducting direction of the first solenoid valve and second solenoid valve, realizes detection gas circuit and purifies the switching of gas circuit；
Governor circuit controls the movement of flow controller, to control detection gas circuit and purify the gas flow of gas circuit.When detection, sample air-flow
Enter air intake, the processing through gas preprocessor filters out the water vapour in sample gas, and eliminates the acidity in sample gas by absorption
Gas, then separation of the sample gas through gas separator flow through the first solenoid valve and flow controller, flow into mercury sensor, and mercury passes
Sensor is enriched with and is detected to element mercury, and the elemental mercury concentration signal detected is conveyed to governor circuit, after the completion of detection, sample
Gas is handled through exhaust purifier, is finally discharged from exhaust outlet.When purification, the residual gas in mercury sensor is in circulating purification gas circuit
In circulate, one after another by exhaust purifier absorb and handle, to reach better clean-up effect, thus restore mercury sensing
The sensitivity of device improves the accuracy detected next time.Mercury sensor is collection enrichment and is detected on integrated mercury sensor, is both contracted
The volume of small detection device, and shorten detection time, improve detection efficiency.The technical program automatically switches to examine by control circuit
Surveying gas circuit and purification gas circuit can accurately and fast be detected under test gas using being enriched with and detecting integrated mercury sensor
Elemental mercury concentration, small in size, convenient for hand-held and carry, easy to operate, detection time is short, and detection efficiency is high.
Preferably, the mercury sensor includes the shell for constituting sealed air chamber and the quartz crystal in gas chamber
Plate is respectively equipped with air inlet and air outlet on the shell of quartz crystal plate two sides, and gas chamber is separated into c-type gas by quartz crystal plate
The front plating of room, quartz crystal plate is formed with measuring electrode, sensitive membrane is covered in measuring electrode, sensitive membrane is a kind of to element
Mercury has a laminated film of suction-operated, and the back side of quartz crystal plate is equipped with heating element, measuring electrode, heating element respectively and
The governor circuit is connected.Sensing element among gas chamber forms sandwich, entire sandwich type quartz crystal oscillator position
Among c-type gas chamber, make to form c-type gas circuit in gas chamber.It is chemically reacted according to gold amalgam, utilizes the sensitive membrane on measuring electrode surface
The element mercury being enriched in absorption sample gas, using the measuring principle of quartz crystal oscillator formula sensor, according to the resonance frequency of quartz crystal
Proportional relation between the load variation of measuring electrode surface quality measures the concentration of element mercury.By sensitive membrane to element mercury
Directly enrichment measurement is carried out, device volume is not only reduced, but also shorten detection time, improves detection efficiency.After the completion of detection, master control electricity
Heating element is opened on road, is made sensitive membrane that amalgam occur and is decomposed, and the element mercury of absorption is released, by exhaust purifier absorption and
Processing, residual gas are discharged from exhaust outlet.Using c-type gas chamber, extend flow path of the gas in gas chamber, it is ensured that gas and quick
Sense film can come into full contact with, and improve detection sensitivity.
Preferably, the material of the quartz crystal plate is piezoelectric quartz crystal, the sensitive membrane is that gold and silver is porous
Powder laminated film, surface form mirror surface film, and the material of the measuring electrode is silver-colored evanohm.Mirror surface film is conducive to inhale
Attached element mercury makes the sensitivity of sensitive membrane can reach 10-12G rank.
Preferably, the heating element is the heating wire for being scattered in snail figure, the material of heating element is
Silver-colored evanohm.Heating element is by being lithographically formed snail figure, so that heating element is using galvanomagnetic-effect in lower voltage
Required heating temperature can be reached down, make sensitive membrane that amalgam occur and decompose, release the mercury element adsorbed, restore sensitive
The absorption property of film improves the sensitivity of sensitive membrane, extends the service life of sensitive membrane.
Preferably, measuring electrode includes a vertical bar and is vertically connected with vertical bar there are two the measuring electrodes
Multiple horizontal stripes, the vertical bar of two measuring electrodes are located at the left and right side of quartz crystal plate, the horizontal stripe of two measuring electrodes
It relatively and is staggered, forms interdigitated configuration.The measuring electrode of interdigitated configuration, so that the oscillation frequency of quartz crystal is damaged
Consumption is minimum, and the good bonding strength with sensitive membrane.
Preferably, the gas preprocessor is the tube body for including alkaline carrier, alkaline carrier is that partial size exists
The porous aluminas carrier of 30~40 mesh loads alkaline particle in hole, is respectively provided with a hydrophobic filter on the nozzle at tube body both ends
Film.Alkaline carrier is used to adsorb the sour gas eliminated in sample gas, such as SO2、H2The gases such as S, hydrophobic filter membrane is for stopping in sample gas
Water vapour, prevent the alkaline carrier in gas preprocessor from hydrolyzing.
Preferably, being equipped with the honeycomb bead that partial size is 10 mesh, the material of honeycomb bead in the exhaust purifier
Matter is to carry iodine activity charcoal.Since mercury has pollution, exhaust purifier is added in exhaust outlet front end, protection is played to environment
Effect.Using iodine activity charcoal honeycomb bead is carried, adsorption rate is up to 80% or more.
Preferably, the governor circuit includes single machine unit, gas circuit control unit, signal processing unit, display
Unit, storage unit and power supply unit, gas circuit control unit, signal processing unit, display unit and storage unit are respectively and single
Piece machine unit is connected, and gas circuit control unit is connected with flow controller, the first solenoid valve, second solenoid valve respectively, signal processing
Unit is connected with mercury sensor, and power supply unit is powered by rechargeable lithium ion batteries.
The beneficial effects of the utility model are: automatically switching detection gas circuit and purification gas circuit by control circuit, using richness
Collect and detect integrated mercury sensor, omits the equipment caught mercury and discharge mercury, it, can essence directly by the enrichment detection of mercury sensor
Really, the elemental mercury concentration being quickly detected under test gas not only reduces detection time, and is greatly reduced detection
The volume and power consumption of device, detection device is small in size, and convenient for hand-held and carrying, easy to operate, detection time is short, detection efficiency
It is high.
Detailed description of the invention
Fig. 1 is a kind of system attachment structure schematic diagram of the utility model.
Fig. 2 is a kind of overlooking structure diagram of mercury sensor in the utility model.
Fig. 3 is a kind of cross section structure schematic diagram of quartz crystal plate in the utility model.
Fig. 4 is the positive a kind of structural schematic diagram of quartz crystal plate in the utility model.
Fig. 5 is a kind of structural schematic diagram of quartz crystal back in the utility model.
Fig. 6 is a kind of circuit theory connection block diagram of governor circuit in the utility model.
1. air intake in figure, 2. gas preprocessors, 3. gas separators, 4. flow controllers, 5. mercury sensors, 6. tails
Gas purifier, 7. exhaust outlets, 8. first solenoid valves, 9. second solenoid valves, 10. shells, 11. quartz crystal plates, 12. air inlets,
13. gas outlet, 14. measuring electrodes, 15. sensitive membranes, 16. heating elements, 17. single machine units, 18. gas circuit control units, 19.
Signal processing unit, 20. display units, 21. storage units, 22. power supply units.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment: a kind of Handheld detection device of quick detection elements mercury of the present embodiment, as shown in Figure 1, include into
Port 1, gas preprocessor 2, gas separator 3, flow controller 4, mercury sensor 5, exhaust purifier 6, exhaust outlet 7 and
One solenoid valve 8, second solenoid valve 9, governor circuit, air intake, gas preprocessor, gas separator, the first solenoid valve, flow
Controller, mercury sensor, exhaust purifier, second solenoid valve and exhaust outlet are sequentially connected composition detection gas circuit, second solenoid valve
It is connected again with the first solenoid valve by pipeline, the first solenoid valve, flow controller, mercury sensor, exhaust purifier and the second electricity
Magnet valve is sequentially connected the purification gas circuit for constituting closed circulation.Mercury sensor is collection enrichment and is detected on integrated mercury sensor.
Gas preprocessor 2 is the polyfluortetraethylene pipe for including alkaline carrier, caliber 20mm, length is 50~
100mm, alkaline carrier are porous aluminas carrier of the partial size in 30~40 mesh, and alkaline particle is loaded in hole, is eliminated for adsorbing
Sour gas in sample gas, such as SO2、H2The gases such as S are respectively provided with a hydrophobic filter membrane, filter sizes on the nozzle at tube body both ends
It is 0.3~0.5 μm, for stopping the water vapour in sample gas, prevents the alkaline carrier in gas preprocessor from hydrolyzing.Gas separation
Difference of the device 3 based on aerothermodynami property separates the different component in gas in a time-sequential manner so that element mercury and
Other gases separate, and increase detection sensitivity.Gas separator is the splitter of a 50~80cm of root long, splitter material
Select the polymeric molecular sieves of not Adsorption of Mercury.Flow controller 4 is to mention with the flow batcher of flow real time monitoring for gas circuit
Power is carried for constant gas, mercury sensor has biggish adsorption rate when to guarantee that gas passes through mercury sensor, and flow must control
200~300ml/min controls flow by 10~100Hz square-wave signal pulse modulation technology (PWM) and adjusts, while cooperating double
Road pulse suppressor, so that stability≤20ml/min, power consumption are smaller.Since mercury has pollution, in exhaust outlet front end
Exhaust purifier is added, is played a protective role to environment, exhaust purifier 6 is provided with the honeycomb bead that partial size is 10 mesh, bee
The material of nest shape bead is to carry iodine activity charcoal, and adsorption rate is up to 80% or more.
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, mercury sensor 5 includes constituting the shell 10 of sealed air chamber and being installed vertically on gas
The quartz crystal plate 11 in room middle position, shell material are polytetrafluoroethylene (PTFE), shell not absorbing elements mercury.The material of quartz crystal plate
Matter is AT tangential piezoelectric quartz crystal, area 0.5cm2, with a thickness of 0.1~0.3mm, fundamental frequency is 6~10MHz, quartz crystal
Top, the bottom of plate are connected with shell, and the rear side of quartz crystal plate is connected with shell, and the front side shrinking away from theshell body of quartz crystal plate has one
Section spacing, there is air inlet 12 and gas outlet 13 on the shell at left and right sides of quartz crystal plate respectively, and air inlet, gas outlet are close
Gas chamber is separated into c-type gas chamber by the rear side of shell, quartz crystal plate, and the front of quartz crystal plate is plated by vacuum electronic coating method
For system there are two measuring electrode 14, the material of measuring electrode is silver-colored evanohm, and measuring electrode includes a vertical bar and vertical with vertical bar
Four connected horizontal stripes, the vertical bar of two measuring electrodes are located at the left and right side of quartz crystal plate, two measuring electrodes
Horizontal stripe it is opposite and be staggered, interdigitated configuration is made by wet process photoetching process, so that the oscillation frequency of quartz crystal is damaged
Consumption is minimum, and the good bonding strength with sensitive membrane, and for measuring electrode with a thickness of 0.5nm, interdigital width is 0.4~0.7mm, and interdigital
Away from for 0.15~0.2mm, sensitive membrane 15 is formed with by the plating of vacuum electronic coating method in measuring electrode, sensitive membrane is a kind of to member
Plain mercury has the laminated film of suction-operated, and the ingredient of laminated film is that Jin-silver is composite porous, and it is thin that surface forms mirror surface
Film, sensitive membrane and measuring electrode are combined by film nano effect.The material of sensitive membrane uses hydro-thermal method, by gold chloride and nitre
Sour silver is prepared into the voluminous powder that aperture is 0.02~0.05nm by hydro-thermal combination reaction, is plated voluminous powder by being coated with method
It makes in measuring electrode, to come into full contact with film surface with gas, is easy to absorbing elements mercury, formed by 300 DEG C of heat treatments
The sensitivity of mirror surface film, film can reach 10-12g rank.The back side of quartz crystal plate is coated with by vacuum electronic coating method to be added
Thermal element 16, heating element are heating wire made of silver-colored evanohm, and heating wire is scattered in snail figure, heating wire with a thickness of
0.5nm, width 0.6mm, spacing 0.3mm, using galvanomagnetic-effect, the heating temperature under 3~4V voltage reaches heating element
150 DEG C, makes sensitive membrane that amalgam occur and decompose, heating element works about 30~40 seconds, the element mercury of sensitive membrane adsorption
Separation, the sensitivity of sensitive membrane can restore 95%.
As shown in fig. 6, governor circuit includes single machine unit 17, gas circuit control unit 18, signal processing unit 19, display
Unit 20, storage unit 21 and power supply unit 22, display unit use liquid crystal touch screen, gas circuit control unit, signal processing list
Member, display unit and storage unit are connected with single machine unit respectively, gas circuit control unit respectively with flow controller, first electric
Magnet valve, second solenoid valve are connected, and single machine unit controls the power on/off of heating element in mercury sensor, the measurement in mercury sensor
Electrode is connected with signal processing unit, and power supply unit is powered by rechargeable lithium ion batteries.Power supply unit uses timesharing suspend mode side
Formula carries out control management, reduces the power consumption of device, and lithium ion battery operating temperature is -20~60 DEG C, and maximum discharge current 8A fills
The electric time is 3 hours, and the working time is not less than 8 hours.For the portability for improving detection device, power supply unit is directly to replace
Power module.For the power demands for meeting equipment, partial pressure pipe is carried out to entire power supply unit using bipolarity linear voltage regulator
Reason.Governor circuit is based on the integrated control of ARM embedded platform, including detection part and control section.Detection part mainly flows
The flow detection of amount controller and the elemental mercury concentration detection of mercury sensor, are connected by analog-to-digital conversion module with two modules.
Signal processing unit includes difference frequency shaping, the conversion of frequency pressure and analog to digital conversion circuit, considers temperature pair in frequency-voltage conversion circuit
Sensor crystal oscillator is affected, using the accurate frequency pressure conversion integrated chip with temperature-compensating energy gap base, so that circuit line
Property degree it is preferable, output frequency still has preferable linear when being less than 0.1Hz, resolution ratio is up to 12.Control section mainly passes through I/O
Interface is connected with gas circuit control unit, display unit and storage unit.Leading for two solenoid valves is controlled by gas circuit control unit
The aperture of logical direction and flow controller.Display unit uses liquid crystal touch screen, not only real-time display measurement data, but also realizes
Man-machine mutual words transmit operational order to single-chip microcontroller.Storage unit uses massive store chip, passes through I2C bus and single-chip microcontroller
The port I/O carry out data transmission.
The course of work: governor circuit controls the conducting direction of the first solenoid valve and second solenoid valve, realize detection gas circuit and
Purify the switching of gas circuit；Governor circuit controls the movement of flow controller, to control detection gas circuit and purify the gas stream of gas circuit
Amount；Air intake, gas preprocessor, gas separator, the first solenoid valve, flow controller, mercury sensor, exhaust purifier,
Second solenoid valve and exhaust outlet are sequentially connected composition detection gas circuit, and when detection, sample gas flows into air intake, through gas preprocessor
Processing filters out the water vapour in sample gas, and eliminates the sour gas in sample gas by absorption, and then sample gas is through gas separator
Separation, flow through the first solenoid valve and flow controller, then flow into mercury sensor from air inlet, flow through c-type gas chamber, then from outlet
Mouthful outflow, comes into full contact with quartz crystal plate in flow process, and sensitive membrane is enriched with the element mercury in absorption sample gas, make element mercury with
Other components in sample gas are completely separated, and load variation according to the resonance frequency of quartz crystal plate and measuring electrode surface quality
Between proportional relation obtain the concentration of element mercury, and be conveyed to by measuring electrode the signal processing unit of governor circuit；Detection
After the completion, governor circuit issues control signal enabling heating element, and heating element is begun to warm up, and makes sensitive membrane that amalgam point occur
Solution, the element mercury of absorption are released, and are adsorbed by exhaust purifier and are handled, and residual gas is discharged from exhaust outlet；First electricity
Magnet valve, flow controller, mercury sensor, exhaust purifier and second solenoid valve are sequentially connected the purified gas for constituting closed circulation
Road circulates the residual gas after the completion of detecting in mercury sensor in circulating purification gas circuit, net by tail gas one after another
Change device to absorb and handle, to reach better clean-up effect, thus restore the sensitivity of mercury sensor, what raising detected next time
Accuracy.
The utility model automatically switches detection gas circuit and purification gas circuit by control circuit, integrated using being enriched with and detecting
Mercury sensor the equipment caught mercury and discharge mercury is omitted using sandwich type quartz crystal oscillator sensor, directly by mercury sensor
Enrichment detection, can accurately and fast detect the elemental mercury concentration under test gas, not only reduce detection time, improve detection
Sensitivity, and it is greatly reduced the volume and power consumption of detection device, detection device is small in size, convenient for hand-held and carrying, behaviour
Facilitate, detection time is short, and detection efficiency is high.
Claims (6)
1. a kind of Handheld detection device of quick detection elements mercury, it is characterised in that including air intake, gas preprocessor, gas
Body separator, flow controller, mercury sensor, exhaust purifier, exhaust outlet and the first solenoid valve, second solenoid valve, master control electricity
Road, air intake, gas preprocessor, gas separator, the first solenoid valve, flow controller, mercury sensor, exhaust purifier,
Second solenoid valve and exhaust outlet are sequentially connected, and second solenoid valve is connected with the first solenoid valve again by pipeline, and mercury sensor is collection
It is enriched with and is detected on integrated mercury sensor, flow controller, mercury sensor, the first solenoid valve and second solenoid valve are respectively and main
Circuit is controlled to be connected.
2. a kind of Handheld detection device of quick detection elements mercury according to claim 1, it is characterised in that described
Mercury sensor includes the shell for constituting sealed air chamber and the quartz crystal plate in gas chamber, on the shell of quartz crystal plate two sides
Air inlet and air outlet are respectively equipped with, gas chamber is separated into c-type gas chamber by quartz crystal plate, and the front plating of quartz crystal plate is formed with survey
Electrode is measured, sensitive membrane is covered in measuring electrode, sensitive membrane is a kind of laminated film to element mercury with suction-operated, stone
The back side of English crystal slab is equipped with heating element, and measuring electrode, heating element are connected with the governor circuit respectively.
3. a kind of Handheld detection device of quick detection elements mercury according to claim 2, it is characterised in that described
Heating element is the heating wire for being scattered in snail figure, and the material of heating element is silver-colored evanohm.
4. a kind of Handheld detection device of quick detection elements mercury according to claim 2, it is characterised in that described
There are two measuring electrodes, and measuring electrode includes a vertical bar and multiple horizontal stripes for being vertically connected with vertical bar, two measuring electrodes
Vertical bar is located at the left and right side of quartz crystal plate, and the horizontal stripe of two measuring electrodes is opposite and is staggered, and forms fork
Finger.
5. a kind of Handheld detection device of quick detection elements mercury according to claim 1, it is characterised in that described
Gas preprocessor is the tube body for including alkaline carrier, and alkaline carrier is that partial size is carried on a shoulder pole in the porous aluminas of 30~40 mesh
Body loads alkaline particle in hole, is respectively provided with a hydrophobic filter membrane on the nozzle at tube body both ends.
6. a kind of Handheld detection device of quick detection elements mercury according to claim 1, it is characterised in that described
Governor circuit includes single machine unit, gas circuit control unit, signal processing unit, display unit, storage unit and power supply unit,
Gas circuit control unit, signal processing unit, display unit and storage unit are connected with single machine unit respectively, gas circuit control unit
It is connected respectively with flow controller, the first solenoid valve, second solenoid valve, signal processing unit is connected with mercury sensor, power supply list
Member is powered by rechargeable lithium ion batteries.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821089621.1U CN208399243U (en) | 2018-07-10 | 2018-07-10 | A kind of Handheld detection device of quick detection elements mercury |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821089621.1U CN208399243U (en) | 2018-07-10 | 2018-07-10 | A kind of Handheld detection device of quick detection elements mercury |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115871A (en) * | 2018-07-10 | 2019-01-01 | 杭州超钜科技有限公司 | The quick detection device of hand-held element mercury and detection method |
| CN112305166A (en) * | 2020-10-24 | 2021-02-02 | 中国人民解放军陆军防化学院 | Air chamber for laboratory toxin detection agent gas sensor and detection method |
-
2018
- 2018-07-10 CN CN201821089621.1U patent/CN208399243U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115871A (en) * | 2018-07-10 | 2019-01-01 | 杭州超钜科技有限公司 | The quick detection device of hand-held element mercury and detection method |
| CN109115871B (en) * | 2018-07-10 | 2020-11-17 | 杭州超钜科技有限公司 | Handheld elemental mercury rapid detection equipment and detection method |
| CN112305166A (en) * | 2020-10-24 | 2021-02-02 | 中国人民解放军陆军防化学院 | Air chamber for laboratory toxin detection agent gas sensor and detection method |
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