CN105547786A - Large-size water sample on-site enriching device - Google Patents
Large-size water sample on-site enriching device Download PDFInfo
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- CN105547786A CN105547786A CN201610050016.2A CN201610050016A CN105547786A CN 105547786 A CN105547786 A CN 105547786A CN 201610050016 A CN201610050016 A CN 201610050016A CN 105547786 A CN105547786 A CN 105547786A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/405—Concentrating samples by adsorption or absorption
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Abstract
The invention provides a water sample on-site enriching device which comprises a water storage device, a filter device, a conveying pump and an adsorbing device. The water storage device is used for storing a water sample with a target substance. The filter device is communicated with the water storage device through a first pipeline, and used for primary filtering of the water sample. The conveying pump is communicated with the filter device through a second pipeline, and used for conveying the water sample. The adsorbing device is communicated with the conveying pump through a third pipeline and communicated with a water outlet through a fourth pipeline and is used for adsorbing the target substance in the water sample. The water sample on-site enriching device can complete filtering, enriching and other pretreatment work of the large-volume water sample at a time, convenience is provided for on-site enrichment of the large-volume water sample, and the device can be used for on-site enrichment of multiple organic pollutants in water samples of various kinds of water such as lakes, rivers, reservoirs and underground water. The device can further be integrated on a box of a cart type structure and has the advantages of being high in integration degree, convenient to carry, easy to operate, diversified in function, convenient to modify and the like.
Description
Technical field
The present invention relates to a kind of water sample with bulk mass On-site sampling concentration device, belong to the Sampling techniques field of organic micro-pollutant in water body.
Background technology
People are to the understanding progress gradually of environment and human health in recent years, in water body, distribution range is comparatively wide, concentration is lower for those, there is the organic micro-pollutant of similar persistence organic pollutant character, as emerging organic contaminants such as perfluorochemical, microbiotic, PBDEs, start to receive publicity.The content of these organic contaminants in water body is general lower, and conventional analytical instrument can not reach the sensitivity of direct injection analysis, in order to reach the detection limit of analytical instrument, usually needs to gather a large amount of water sample.Traditional analytical approach be carry out after a large amount of water sample container splendid attire is transported to laboratory filtering, enrichment, purification and instrumental analysis test.The collection of water sample with bulk mass can increase difficulty to sample transport and the pre-treatment step such as enrichment, purification, takes time and effort, increases time and cost.Therefore, it is possible to urgently develop the apparatus and method that water sample carries out enrichment in sampling location.
Due to the existence of extremely low concentrations, cause a water sample at least to need to gather a few decaliter and enrichment/concentrated after just to reach required by certain analytical instrument minimum detects lower limit.
Summary of the invention
The object of the invention is the deficiency existed for above-mentioned prior art, propose a kind of water sample On-site sampling concentration device, water sample with bulk mass On-site sampling concentration can be carried out at the scene.
To achieve these goals, the invention provides a kind of water sample On-site sampling concentration device, its feature is, comprising:
Water storage device, for storing the water sample containing target substance;
Filtration unit, with described water storage device by the first pipeline connection, for the primary filter of described water sample;
Discharge pump, with described filtration unit by the second pipeline connection, for transmitting described water sample;
Adsorbent equipment, with described discharge pump by the 3rd pipeline connection, and is communicated with a water delivering orifice, for adsorbing the described target substance in described water sample by the 4th pipeline.
In one embodiment of this invention, described water sample On-site sampling concentration device also comprises:
Flow controller, is electrically connected with described discharge pump, for setting the flow of described water sample, and the cumulative volume of setting enrichment water sample, and controls described discharge pump when enrichment water sample reaches described cumulative volume and quits work; And
Flowmeter, for measuring the volume of enrichment water sample.
In one embodiment of this invention, described water sample On-site sampling concentration device also comprises: fluid level control device, with described second pipeline connection, for arranging the liquid level in described discharge pump, and discharges the air in described first pipeline and described second pipeline.
In one embodiment of this invention, described fluid level control device is a linker structure, its one end is opening, other end series connection one first switch valve is connected with described second pipeline, by injecting water body to described open at one end, the liquid level in discharge pump described in the other end can be controlled, and get rid of in described discharge pump and air in described first pipeline and described second pipeline, thus device can be made to reach optimum working efficiency.
In one embodiment of this invention, described water sample On-site sampling concentration device also comprises: casing, for integrate and integrated described water storage device, described filtration unit, described discharge pump, described adsorbent equipment, described fluid level control device, described flow controller and described flowmeter thereon.
In one embodiment of this invention, described water storage device is provided with a level switch, and wherein said level switch and described flow controller are electrically connected, when liquid level in described water storage device is lower than described level switch position, and described discharge pump auto-breaking; And/or described water storage device is provided with a second switch valve, described second switch valve is positioned on described first pipeline, and when closing described second switch valve, described water storage device does not reoffer described water sample.
In one embodiment of this invention, described filtration unit has air release, is arranged at described filtration unit top, for the gas in filtration unit described in emptying; And/or described filtration unit has draining valve, it is arranged at described filtration unit bottom and is positioned on described second pipeline, for the water body in filtration unit described in emptying.
In one embodiment of this invention, described adsorbent equipment is extracting disk pattern or absorption sleeve pattern.
In one embodiment of this invention, described casing is the trolley type structure carrying worktable and rolling screen door, wherein said filtration unit, described discharge pump, described adsorbent equipment, described fluid level control device, described flow controller and described flowmeter are integrated in described casing, and described water storage device is incorporated into outside described casing.
In one embodiment of this invention, the capacity of described water storage device is 50L; Described filtration unit adopts the filter membrane material of diameter of phi >20cm, and its aperture is 0.45 μm; The direct current of the power acquisition 24V safe voltage of described discharge pump, the flow set of described discharge pump is between 20-100mL/min.
The invention provides a kind of water sample On-site sampling concentration device, water sample enrichment can be carried out at the scene, be especially applicable to the water sample enrichment of large volume.The step height such as traditional sample storage, filtration, enrichment, acquired volume calculating are integrated in a table apparatus by the present invention, have compact conformation, convenient operation and the feature of carrying.Can be used for the collection in worksite of the Different Waters such as shallow lake, river, reservoir, underground water, can be used for the polarity of multiple trace and the analysis of apolar substance in water body.
Accompanying drawing explanation
Fig. 1 is the structural representation of water sample On-site sampling concentration device of the present invention;
Fig. 2 is the concrete recovery result schematic diagram of the present invention one specific embodiment.
Embodiment
The invention provides a kind of water sample On-site sampling concentration device, water sample enrichment can be carried out at the scene easily, be especially applicable to the water sample enrichment of large volume.According to one embodiment of the invention, as shown in Figure 1, water sample On-site sampling concentration device of the present invention mainly comprises:
Water storage device 10, for storing the water sample containing target substance;
Filtration unit 20, is communicated with, for the primary filter of described water sample by the first pipeline 101 with described water storage device 10;
Discharge pump 30, is communicated with, for transmitting described water sample by the second pipeline 201 (comprising the silica gel hose 301 be arranged on described discharge pump 30) with described filtration unit 20;
Adsorbent equipment 40, is communicated with by the 3rd pipeline 302 with described discharge pump 30, and is communicated with a water delivering orifice O, for adsorbing the target substance in described water sample by the 4th pipeline 401.
Wherein, water sample is drawn out of from described water storage device 10, from water inlet I to water filling in the first pipeline 101, and be transferred in described discharge pump 30 after described filtration unit 20 primary filter, be transported in described adsorbent equipment 40 by described discharge pump 30 again, to adsorb and enrichment target substance, finally discharge from described water delivering orifice O.So, water sample enrichment can be carried out at the scene by above-mentioned water sample enriching apparatus.
In order to realize the quantitative enrichment of water sample, water sample On-site sampling concentration device of the present invention also can comprise flow controller 50, and itself and described discharge pump 30 are electrically connected by circuit 54.In the present embodiment, described flow controller 50 has flow meter function, may be used for measuring the volume of enrichment water sample, also can be used for the flow setting described water sample simultaneously, and the cumulative volume of setting enrichment water sample, and described discharge pump 30 can be controlled when enrichment water sample reaches described cumulative volume quit work.Described flow controller 50 can be powered by lithium battery 51.In other embodiments, described flow controller and described flowmeter also can be independently parts, and this is not as limitation of the present invention.
Preferably, water sample On-site sampling concentration device of the present invention also can comprise fluid level control device 60, it is arranged in the transfer conduit between described filtration unit 20 and described discharge pump 30, namely be communicated with described second pipeline 201, as branch roads system, can be used for arranging the liquid level in described discharge pump 30, and discharge the air in described first pipeline 101 and described second pipeline 201 (comprising silica gel hose 301) fast, thus make enriching apparatus reach optimum working efficiency.
More preferably; water sample On-site sampling concentration device of the present invention also can comprise casing 80; for integrate and integrated described water storage device 10, described filtration unit 20, described discharge pump 30, described fluid level control device 60, described flow controller 50 (comprising flowmeter) thereon; realize the mount of each parts, proterctive equipment can be played not by the effect that external environment is invaded and harassed simultaneously.In the present embodiment, described casing 80 is for carrying the trolley type structure of worktable and rolling screen door, wherein said filtration unit 20, described discharge pump 30, described adsorbent equipment 40, described fluid level control device 60, described flow controller 50 are integrated in described casing 80, form the main part of enriching apparatus; Described water storage device 10 is incorporated into outside described casing 10.Such as, as shown in Figure 1, described water storage device 10 is the left sides being placed on described casing 80 by a workbench, and described filtration unit 20 is mounted on the lower position in described casing 80, above described filtration unit 20, place described flow controller 50 and described lithium battery 51 by workbench 85, above described flow controller 50, fix described discharge pump 30 by Working gantry 84 and place described adsorbent equipment 40.And the height that described fluid level control device 60 is arranged is roughly concordant with the height of described discharge pump 30.Road wheel 81 is provided with bottom described casing 80.
In the present invention, described water storage device 10 also can be provided with level switch 52 and/or a switch valve 12.Wherein, described level switch 52 is electrically connected by circuit 53 and described flow controller 50, and when in described water storage device 10, liquid level is lower than described level switch 52 position, described discharge pump 30 can auto-breaking.Described switch valve 12 is positioned on described first pipeline 101, and when closing described switch valve 12, described water storage device 10 does not reoffer water sample.In the present embodiment, the capacity of described water storage device 10 such as can be 50L.But be understandable that, the capacity of described water storage device 10 is not limited to 50L, and it can be designed as different capabilities as required.
In the present invention, described filtration unit 20 has air release 21 and/or draining valve 22.Wherein, described air release 21 is arranged at described filtration unit 20 top, for the gas in filtration unit described in emptying 20.Described draining valve 22 is arranged at described filtration unit 20 bottom and is positioned on described second pipeline 201, can be used for the water body in filtration unit 20 described in emptying.In the present embodiment, described filtration unit 20 can adopt the filter membrane pallet of diameter of phi >20cm, and its aperture can be 0.45 μm.But be understandable that, according to actual needs, also can adopt the filter membrane pallet of other diameter and pore size, these are not equally as limitation of the present invention.
In the present invention, the power supply of described discharge pump 30 can adopt the direct current of 24V safe voltage, and the flow of described discharge pump can be arranged between 20-100mL/min.
As shown in Figure 1, it illustrates the concrete structure of the present invention one preferably water sample On-site sampling concentration device.Concrete:
Water storage device 10 is large-scale polypropylene (PP) the material water tank through repacking.The top of water tank is water filling port 11, and the water body extracted from environment thus water filling port 11 injects, and when water storage, this water filling port 11 can seal with nut.The bottom of water tank and flow controller 50 are level switch 52 by the part that circuit 53 is electrically connected, and when water tank middle water level is lower than level switch 52, level switch 52 disconnects automatically, and flow controller 50 power-off is closed down.After level switch 52, a series connection switch valve 12, supplies water in enriching apparatus for Non-follow control water storage device 10.
Filtration unit 20 main body is for loading the filter membrane pallet (if pressure is excessive when water sample crosses film, replacing 1 μm of filter membrane carries out primary filter, then connects a small-sized filtering table for secondary filter in adsorbent equipment 40 front end) that aperture is 0.45 μm.Filter membrane pallet lower interface place is provided with draining valve 22, and top is provided with air release 21, when starting water filling in filter membrane pallet, open air release 21, the air in filter membrane pallet can be discharged, maintain the air pressure balance of filtration unit inside, enable water sample evenly be covered with filter membrane, and keep the stability of flow velocity.When filter membrane in pallet need to change or complete needs of sampling emptying unnecessary water sample time, the water body in the emptying pallet of draining valve 22 can be opened.
Discharge pump 30 is for providing the gear-type pump of stable flow velocity, and driven by 20.4v direct-flow storage battery (as lithium battery 51), the feed flow of pump is 50mL/min.Gear-type pump is higher to the water sample purity requirements flowing through the pump housing, and oarse-grained impurity can cause comparatively galling to gear, therefore needs to arrange filtration unit 20 in discharge pump 30 front end, accesses after water body rough purification in pump again.Further, gear-type pump itself needs to fill water, allows in the pump housing and has been in water state all the time, just can reach maximum service efficiency.
Adsorbent equipment 40 can adopt two schemes, a kind of scheme is solid-phase extracting disk, i.e. parts as shown in Figure 1, it is supported by a small-sized Working gantry 841, Working gantry 841 itself is fixed on the workbench 84 in casing 80, it is movable part for supporting the part 41 of solid-phase extracting disk, can drive solid-phase extracting disk rising height, so that work such as pre-service.Another kind of scheme does not illustrate in the drawings, and be one absorption sleeve pattern, its inside can fill the material such as resin and PUF for adsorbing the dissolved colloidal state particle in water sample.
Fluid level control device 60 entirety is a linker structure, and upper opening is water filling port 61, and a bottom switch valve 62 of connecting is connected with the second pipeline 201.After the switch valve 12 of water storage device 10 is opened, water sample flows out under gravity, first filtration unit 20 can be flowed through, due to existence and structure itself of filter membrane, the resistance of filtration unit 20 pairs of water is comparatively large, promotes water sample cross film iff relying on the gravity acting of water, time is longer, efficiency is extremely low, and is not easy to the air in emptying filtration unit 20, therefore arranges fluid level control device 60.When in fluid level control device 60 during water filling, can observe the liquid level of its inside from opening part, from the characteristic of linker, the liquid level in fluid level control device 60 is the liquid level in discharge pump 30.When filling water in fluid level control device 60, fill water in the main line (i.e. the second pipeline 201) between known filtration unit 20 to discharge pump 30 and discharge pump 30, and device inner air is substantially by emptying.
Casing 80 is for carrying the trolley type structure of worktable and rolling screen door, and other each several part of device is integrated in casing.Cart structure is convenient to transport, and carry pretreatment work when worktable is convenient to On-site sampling concentration in casing, rolling screen door can be closed when needed, is not subject to external interference when running to protect internal unit.
Principle of work and the mode of operation of the water sample On-site sampling concentration device that above-mentioned embodiment provides are as follows:
The water sample On-site sampling concentration device that this embodiment provides is installed, is fixed in casing 80 due to each several part, therefore only filter membrane need be loaded by filter membrane pallet, insert adsorbent equipment 40 after consumptive material required in adsorbent equipment is carried out pre-service and connect pipeline in device, just can complete preliminary preparation.During onsite application, to water storage device 10, first inject the water sample of conventional Christmas from the water filling port 11 on water storage device 10 top, after completing, available nut covers water filling port 11 but does not tighten.Afterwards, open the switch valve 12 of water storage device 10 water inlet I, start water filling in the first pipeline 101.Open air release 21 after a period of time, open the switch valve 62 of fluid level control device 60 bottom simultaneously and inject a small amount of high purity water to filling in fluid level control device 60, now fill water by the pump housing of the known discharge pump 30 of above-mentioned principle and pipeline.Close the switch valve 62 below fluid level control device 60 and air release 21 subsequently, open the correction operation that discharge pump 30 carries out three times one minute duration, correcting on the one hand is in order to emptying remaining air, is in order to stable, exact flow rate on the other hand.When formally starting enrichment water sample, only need set final enrichment volume, whole device just can automatically run and stop.In enrichment process, the water sample be stored in water storage device 10 can first through filtration unit 20, after filtering out the larger suspended particulate substance of particle diameter, enter discharge pump 30, be transferred on the sorbing material in adsorbent equipment 40 again, by sorbing material, target substance is adsorbed and enrichment, discharge finally by the water delivering orifice O on casing.When enrichment completes or water level is too low, the power supply of discharge pump will stop automatically, now the switch valve 12 of powered-down and water storage device 10, open water body residual in the emptying pipeline of filtration unit 20 bottom draining valve 22, complete a whole set of enrichment operation.After enrichment completes, adsorbent equipment 40 is taken off, by vacuumize or vacuum drying method by adsorption stuffing moisture content remove, then use the method for direct drip washing or surname extraction to be extracted by the object be adsorbed in filler, after concentrating further, carry out examination with computer.
Embodiment 1:
Water sample with bulk mass On-site sampling concentration device is used to be used for antibiotic recovery testu in point bleed.After using 30mL methyl alcohol and ultrapure water to carry out cleaning activation to solid-phase extracting disk respectively, by the solid-phase extracting disk after activation by being added with target water sample in quantitative microbiotic extraction, making microbiotic extract interior mark and be attracted in the filler in solid-phase extracting disk.According to said apparatus mode, make certain volume add quantitative antibiotic water sample by adding the solid-phase extracting disk after mark, flow velocity is arranged on 40-50mL/min.Water sample by after solid-phase extracting disk be placed on negative pressure on solid-phase extraction device drain 1-2h, drain rear 30-40mL methyl alcohol drip washing extracting disk, and access leacheate.Leacheate containing target substance is concentrated, after concentrating near doing, is settled to 0.5-1.0mL, mark before adding quantitative sample injection, by use LCMSMS test after the extract pin type filter filtration after concentrated constant volume.The concrete recovery the results are shown in Figure 2.
The features such as the technical scheme adopting the present embodiment to provide, has degree of integration high, be easy to carry, simple to operate, diverse in function, and repacking is convenient.Disposablely can complete the filtration of water sample, absorption, sampling volume determine and part pretreatment work, for water sample with bulk mass On-site sampling concentration is provided convenience, can be used for the On-site sampling concentration of the Different Waters water samples such as lake, river, reservoir, beneath water.
Certainly; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the present invention.
Claims (10)
1. a water sample On-site sampling concentration device, is characterized in that, comprising:
Water storage device, for storing the water sample containing target substance;
Filtration unit, with described water storage device by the first pipeline connection, for the primary filter of described water sample;
Discharge pump, with described filtration unit by the second pipeline connection, for transmitting described water sample;
Adsorbent equipment, with described discharge pump by the 3rd pipeline connection, and is communicated with a water delivering orifice, for adsorbing the described target substance in described water sample by the 4th pipeline.
2. water sample On-site sampling concentration device according to claim 1, is characterized in that, also comprise:
Flow controller, is electrically connected with described discharge pump, for setting the flow of described water sample, and the cumulative volume of setting enrichment water sample, and controls described discharge pump when enrichment water sample reaches described cumulative volume and quits work; And flowmeter, for measuring the volume of enrichment water sample.
3. water sample On-site sampling concentration device according to claim 2, is characterized in that, also comprise:
Fluid level control device, with described second pipeline connection, for arranging the liquid level in described discharge pump, and discharges the air in described first pipeline and described second pipeline.
4. water sample On-site sampling concentration device according to claim 3, it is characterized in that, described fluid level control device is a linker structure, its one end is opening, other end series connection one first switch valve is connected with described second pipeline, by injecting water body to described open at one end, the liquid level in discharge pump described in the other end can be controlled, and get rid of in described discharge pump and air in described first pipeline and described second pipeline.
5. the water sample On-site sampling concentration device according to claim 3 or 4, is characterized in that, also comprise:
Casing, for integrate and integrated described water storage device, described filtration unit, described discharge pump, described adsorbent equipment, described fluid level control device, described flow controller and described flowmeter thereon.
6. water sample On-site sampling concentration device according to claim 5, it is characterized in that, described water storage device is provided with a level switch, wherein said level switch and described flow controller are electrically connected, when liquid level in described water storage device is lower than described level switch position, described discharge pump auto-breaking; And/or described water storage device is provided with a second switch valve, described second switch valve is positioned on described first pipeline, and when closing described second switch valve, described water storage device does not reoffer described water sample.
7. water sample On-site sampling concentration device according to claim 1, it is characterized in that, described filtration unit has air release, is arranged at described filtration unit top, for the gas in filtration unit described in emptying; And/or described filtration unit has draining valve, it is arranged at described filtration unit bottom and is positioned on described second pipeline, for the water body in filtration unit described in emptying.
8. water sample On-site sampling concentration device according to claim 1, is characterized in that, described adsorbent equipment is extracting disk pattern or absorption sleeve pattern.
9. water sample On-site sampling concentration device according to claim 5, it is characterized in that, described casing is the trolley type structure carrying worktable and rolling screen door, wherein said filtration unit, described discharge pump, described adsorbent equipment, described fluid level control device, described flow controller and described flowmeter are integrated in described casing, and described water storage device is incorporated into outside described casing.
10. water sample On-site sampling concentration device according to claim 4, is characterized in that, the capacity of described water storage device is 50L; Described filtration unit adopts the filter membrane material of diameter of phi >20cm, and its aperture is 0.45 μm; The direct current of the power acquisition 24V safe voltage of described discharge pump, the flow set of described discharge pump is between 20-100mL/min.
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| CN201610050016.2A CN105547786A (en) | 2016-01-25 | 2016-01-25 | Large-size water sample on-site enriching device |
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| CN201610050016.2A CN105547786A (en) | 2016-01-25 | 2016-01-25 | Large-size water sample on-site enriching device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107376488A (en) * | 2017-08-15 | 2017-11-24 | 江苏省环境监测中心 | Suitable for the filtration in-situ system of the water sample containing heavy metal |
| CN109000991A (en) * | 2018-10-24 | 2018-12-14 | 吉林建筑大学 | A kind of underground Organic substance in water sampler |
| CN109407136A (en) * | 2018-09-20 | 2019-03-01 | 北京航空航天大学 | Seawater radionuclide On-site sampling concentration detection device based on flexible scintillator |
| CN110501203A (en) * | 2019-08-05 | 2019-11-26 | 未名环境分子诊断(广东)有限公司 | The Preconcentration in-situ purification device and method of psychoactive drug substance in a kind of water environment |
| CN113720667A (en) * | 2021-09-02 | 2021-11-30 | 艾萍 | Water sample treatment system and method for environmental monitoring |
| CN114935484A (en) * | 2022-05-25 | 2022-08-23 | 南京大学 | Low-carbon and high-efficiency field rapid enrichment and separation device and method for large-volume water sample |
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| CN202281707U (en) * | 2011-09-28 | 2012-06-20 | 中持（北京）环保发展有限公司 | Sampling device for large-volume water sample |
| CN204344098U (en) * | 2014-11-11 | 2015-05-20 | 中国石油天然气股份有限公司 | Liquid-adding device |
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| CN202281707U (en) * | 2011-09-28 | 2012-06-20 | 中持（北京）环保发展有限公司 | Sampling device for large-volume water sample |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107376488A (en) * | 2017-08-15 | 2017-11-24 | 江苏省环境监测中心 | Suitable for the filtration in-situ system of the water sample containing heavy metal |
| CN109407136A (en) * | 2018-09-20 | 2019-03-01 | 北京航空航天大学 | Seawater radionuclide On-site sampling concentration detection device based on flexible scintillator |
| CN109407136B (en) * | 2018-09-20 | 2021-01-15 | 北京航空航天大学 | Seawater radionuclide on-site enrichment detection device based on flexible scintillator |
| CN109000991A (en) * | 2018-10-24 | 2018-12-14 | 吉林建筑大学 | A kind of underground Organic substance in water sampler |
| CN109000991B (en) * | 2018-10-24 | 2020-10-02 | 吉林建筑大学 | Sampling device for organic matters in underground water |
| CN110501203A (en) * | 2019-08-05 | 2019-11-26 | 未名环境分子诊断(广东)有限公司 | The Preconcentration in-situ purification device and method of psychoactive drug substance in a kind of water environment |
| CN110501203B (en) * | 2019-08-05 | 2024-04-02 | 未名环境分子诊断(广东)有限公司 | On-site rapid enrichment and purification device and method for mental active substances in water environment |
| CN113720667A (en) * | 2021-09-02 | 2021-11-30 | 艾萍 | Water sample treatment system and method for environmental monitoring |
| CN114935484A (en) * | 2022-05-25 | 2022-08-23 | 南京大学 | Low-carbon and high-efficiency field rapid enrichment and separation device and method for large-volume water sample |
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Application publication date: 20160504 |