CN106840768B - Organic pollutant in-situ curing and collecting device and application thereof - Google Patents

Organic pollutant in-situ curing and collecting device and application thereof Download PDF

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Publication number
CN106840768B
CN106840768B CN201710043188.1A CN201710043188A CN106840768B CN 106840768 B CN106840768 B CN 106840768B CN 201710043188 A CN201710043188 A CN 201710043188A CN 106840768 B CN106840768 B CN 106840768B
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sample bottle
probe
sample
metal cover
multifunctional
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CN201710043188.1A
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CN106840768A (en
Inventor
程虎
卞永荣
宋洋
和文祥
王芳
谷成刚
杨兴伦
叶茂
纪荣婷
刘畅
蒋新
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Institute of Soil Science of CAS
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Institute of Soil Science of CAS
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/10Devices for withdrawing samples in the liquid or fluent state
    • G01N1/14Suction devices, e.g. pumps; Ejector devices
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20Controlling water pollution; Waste water treatment

Abstract

The utility model provides an organic pollutant normal position solidification collection system and application thereof, includes multi-functional metal cap, probe input appearance, sample bottle support, at least one sample bottle, sensing room and heating magnetic stirrer, heating magnetic stirrer's lower part is equipped with the support frame, heating magnetic stirrer's upper portion is located to the sensing room, the upper portion in sensing room is located to the sample bottle support, contain polytetrafluoroethylene magnetic rotor in the sample bottle, and in the sample bottle detachable locates the sample bottle support, the top of sample bottle is located to multi-functional metal cap, and with sample bottle screw thread sealing connection, probe input appearance and multi-functional metal cap screw thread connection. The device can be used for rapidly adsorbing or distributing and fixing the volatile and semi-volatile organic pollutants with certain substances in the water body environment on the microprobe in situ, so that the loss of the volatile and semi-volatile organic pollutants in the transportation and storage processes is avoided, and the device can be stored for a long time.

Description

Organic pollutant in-situ curing and collecting device and application thereof
Technical Field
The invention relates to the field of organic pollutant collecting devices, in particular to a water body volatile and semi-volatile organic pollutant in-situ solidification collecting device and an application method thereof.
Background
Volatile and semi-volatile organic contaminants are persistent, long-distance mobile and highly toxic. At present, the health of human beings is seriously endangered by the wide distribution in the global scope, and the scientific research personnel are brought into wide attention. The water body is one of natural reservoirs for collecting volatile and semi-volatile organic pollutants, is extremely easy to migrate and is enriched by aquatic organisms, and finally is amplified in a human body to generate diseases. Therefore, detection and monitoring of volatile and semi-volatile organic contaminants in the water environment is of paramount importance. To date, no specific method and equipment for collecting water body samples aiming at volatile and semi-volatile organic pollutants are available, and a traditional and simpler collecting method is adopted, namely, a glass sample bottle is directly used for collecting, and then the water body samples are transported and stored, and finally, pretreatment and measurement are carried out in a laboratory. In the method, a filtering device is not arranged when a sample is collected, the sample contains impurities and microorganisms, and adsorption and degradation can exist in the transportation process and the like; in the transportation and preservation process, a great deal of loss is easy to exist due to the volatility of pollutants, so that the final measurement result is lower than the in-situ actual measurement result and needs to be measured in time; before measurement, pretreatment is required, purification and enrichment are performed, and a large amount of labor and financial resources are consumed. Therefore, in order to solve the above problems, an invention of an in-situ solidification collection device for volatile and semi-volatile organic pollutants of a water body is necessary.
Disclosure of Invention
The technical problems to be solved are as follows: the invention provides an in-situ solidification collection device for organic pollutants and application thereof, wherein the device can quickly adsorb or distribute and fix the volatile and semi-volatile organic pollutants with certain amounts of substances on a miniature probe in situ, avoid the loss of the volatile and semi-volatile organic pollutants in the transportation and storage processes, and can be stored for a long time; by immobilizing contaminants on the microprojections, the sample volume and weight can be reduced, reducing transportation and storage costs; the transfer process comprises purification and enrichment effects, improves the sensitivity of the detection method, can be directly connected with an analysis instrument for sample introduction, and reduces labor force. The device realizes the rapid and accurate determination of the in-situ water body sample volatility and the semi-volatility organic pollutant
The technical scheme is as follows: the utility model provides an organic pollutant normal position solidification collection system, includes multi-functional metal lid, probe input appearance, sample bottle support, at least one sample bottle, sensing room and heating magnetic stirrer, heating magnetic stirrer's lower part is equipped with the support frame, heating magnetic stirrer's upper portion is located to the sensing room, the upper portion in sensing room is located to the sample bottle support, contain polytetrafluoroethylene magnetic rotor in the sample bottle, and in the sample bottle detachable locates the sample bottle support, the top of sample bottle is located to multi-functional metal lid, and with sample bottle screw thread sealing connection, probe input appearance and multi-functional metal lid threaded connection.
Preferably, the top of the multifunctional metal cover is provided with a sample input port, a vacuum pump connector and a clamping device, the sample input port is provided with a filter head, and the central area of the multifunctional metal cover is hollowed out.
Preferably, a polytetrafluoroethylene gasket is arranged between the sample bottle and the multifunctional metal cover.
Preferably, a temperature sensing rod is arranged in the temperature sensing chamber.
Preferably, the probe input instrument comprises a probe, a handle, a metal needle tube, a movable metal barrel and a pressing sheet, wherein the handle is arranged at the top of the metal needle tube, the movable metal barrel is arranged in the metal needle tube and is in threaded connection with the metal needle tube, the pressing sheet is arranged in the movable metal barrel, the probe is arranged at the bottom of the pressing sheet, and the pressing degree of the pressing sheet is adjusted through rotating the movable metal barrel to fix the probe.
Preferably, a storage chamber is arranged on the support frame.
Preferably, a visual window is arranged on the side surface of the sample bottle.
The device is applied to in-situ solidification and collection of volatile and semi-volatile organic pollutants in water.
The specific application steps are as follows: determining a sampling point, opening a support frame, taking out a sampling hose and a filter head from a storage chamber, connecting one end of the hose and the filter head to a sample input port on a multifunctional metal cover, taking out the hose to connect a vacuum pump and a vacuum pump connecting port, tightly covering the multifunctional metal cover by rotating threads, inserting the other end of the hose into the water area of the sampling point, starting in-situ sampling, observing the sampling progress through a visible window, closing the pump after the sampling progress reaches a preset sampling amount, closing the sample input port and the vacuum pump connecting port on the multifunctional metal cover, taking down the hose, opening the multifunctional metal cover, adding a polytetrafluoroethylene rotor into a sample bottle, and installing a polytetrafluoroethylene gasket and then covering the multifunctional metal cover; the method comprises the steps of adding water into a temperature sensing chamber, opening a heating magnetic stirrer for heating, taking out a probe input instrument, rotationally moving a metal barrel, loosening a pressing piece, putting the probe, rotationally moving the metal barrel again to clamp the probe, penetrating the metal needle tube into a sample bottle, realizing connection of the probe input instrument and the sample bottle through threaded rotation, stabilizing the probe input instrument through a clamping device, setting the rotating speed of a polytetrafluoroethylene rotor, timing acquisition, collecting in the reverse process, taking out the probe, and storing in a storage box, wherein the sample is injected or analyzed by a direct GC in the later stage.
The working principle of the invention is as follows: when a water body sample is collected, the device is installed, a hose of a sample input port and a hose of a vacuum pump connector are connected, a vacuum pump is opened, a sample is collected in a sample bottle through air pressure difference, the sample collection state is observed, after the required volume is reached, the vacuum pump is closed, and the sample input port and the vacuum pump connector are closed. And installing a probe on the probe input instrument, and puncturing the polytetrafluoroethylene gasket. And (3) turning on the heating magnetic stirrer, and calculating the functional relation between pollutants on the probe and the water environment in a certain time under the actual operation condition according to the diffusion balance theory. After the sampling is finished, the probe is pulled out and stored in an incubator at-4 ℃.
The beneficial effects are that: compared with the existing collector, the device has small size and no reduction in sampling depth, can simultaneously adopt soil and soil solution in situ, is convenient to carry, avoids sample loss and pollution, and ensures the consistency and the authenticity of samples. The phase change of the organic pollutants avoids the loss caused by conventional sampling, transportation and storage, and can be stored for a long time. The magnetic ion stirring and heating quickens the volatilization of organic matters, thereby prolonging and avoiding the shortages, promoting the phase transformation, purification and enrichment, improving the working efficiency and reducing the working time. The plurality of sample input ports quicken the speed of collecting the water body samples, and can diversify sampling points and be closer to reality. The probe is used, so that the volume and the weight of a sample are greatly reduced, the field sampling and storage burden is reduced, and the probe can be replaced according to the pollutant property.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a multifunctional metal cover structure;
FIG. 3 is a schematic diagram of the structure of the probe input instrument;
in the figure, a multifunctional metal cover 1, a hose 2, a probe input instrument 3, a sample bottle bracket 4, a filter head 5, a polytetrafluoroethylene gasket 6, a probe 7, a sample bottle 8, a visible window 9, a temperature sensing chamber 10, a temperature sensing rod 11, a polytetrafluoroethylene magnetic rotor 12, a support frame 13, a heating magnetic stirrer 14, a storage chamber 15, a sample input port 16, a vacuum pump connecting port 17, a clamping device 18, a central area 19, a handle 20, a metal needle tube 21, a movable metal barrel 22 and a pressing sheet 23.
Detailed Description
Example 1
The utility model provides an organic pollutant normal position solidification collection system, includes multi-functional metal lid 1, probe input appearance 3, sample bottle support 4, at least one sample bottle 8, temperature sensing room 10 and heating magnetic stirrer 14, the lower part of heating magnetic stirrer 14 is equipped with support frame 13, the upper portion of heating magnetic stirrer 14 is located to temperature sensing room 10, the upper portion of temperature sensing room 10 is located to sample bottle support 4, contain polytetrafluoroethylene magnetic rotor 12 in the sample bottle 8, and sample bottle 8 detachable locates in the sample bottle support 4, the top of sample bottle 8 is located to multi-functional metal lid 1, and with sample bottle 8 screw thread sealing connection, probe input appearance 3 and multi-functional metal lid 1 screw thread connection. The top of the multifunctional metal cover 1 is provided with a sample input port 16, a vacuum pump connection port 17 and a clamping device 18, the sample input port 16 is provided with a filter head 5, and a central area 19 of the multifunctional metal cover 1 is hollowed out. A polytetrafluoroethylene gasket 6 is arranged between the sample bottle 8 and the multifunctional metal cover 1. A temperature sensing rod 11 is arranged in the temperature sensing chamber 10 and is used for transmitting temperature data. The probe input instrument 3 comprises a probe 7, a handle 20, a metal needle tube 21, a movable metal barrel 22 and a pressing sheet 23, wherein the handle 20 is arranged at the top of the metal needle tube 21, the movable metal barrel 22 is arranged in the metal needle tube 21 and is in threaded connection with the metal needle tube 21, the pressing sheet 23 is arranged in the movable metal barrel 22, the probe 7 is arranged at the bottom of the pressing sheet 23, and the pressing degree of the pressing sheet 23 is adjusted through rotating the movable metal barrel 22 so as to fix the probe 7. The support 13 is provided with a storage chamber 15. The side of the sample bottle 8 is provided with a visual window 9.
The application of the device in-situ solidification and collection of volatile and semi-volatile organic pollutants in water comprises the following steps: determining a sampling point, opening a support frame 13, taking out a sampling hose 2 and a filter head 5 from a storage chamber 15, connecting one end of the hose 2 and the 0.45-micrometer filter head 5 to a sample input port 16 on a multifunctional metal cover 1, taking out the hose, connecting a vacuum pump and a vacuum pump connecting port 17, tightly covering the multifunctional metal cover by screw threads, inserting the other end of the hose 2 into a sampling point water area, opening a pump for in-situ sampling, observing the sampling progress through a visual window 9, closing the pump after a preset sampling amount is reached, closing a sample input port 16 and the vacuum pump connecting port 17 on the multifunctional metal cover 1, taking down the hose, opening the multifunctional metal cover 1, adding a polytetrafluoroethylene rotor 12 into a sample bottle 8, and covering the multifunctional metal cover 1 after a polytetrafluoroethylene gasket 6 is arranged; the temperature sensing room 10 adds water, opens the heating magnetic stirrer 14 and heats, takes out probe input appearance 3, rotatory removal metal bucket 22, becomes flexible preforming 23, puts into probe 7, and rotatory removal metal bucket 22 is in order to press from both sides tight probe 7 again, pierces into sample bottle 8 with metal needle tubing 21, realizes the connection of probe input appearance 3 and sample bottle 8 through the screw thread rotation, stabilizes probe input appearance 3 through clamping device 18, sets up polytetrafluoroethylene rotor rotational speed, timing collection, and the reverse process collecting device takes out probe 7, places in the storage box and preserve, and the direct GC of later stage advances kind or analyzes and advances kind.
The specific embodiment has the following beneficial effects: compared with the traditional collector, the device integrates in-situ, sampling, enrichment and purification, can quickly fix the volatile and semi-volatile organic pollutants of the field water body sample on the adsorption probe in-situ, avoids the transportation, transfer or preservation loss of the volatile and semi-volatile organic pollutants, accurately determines the concentration of the pollutants of the in-situ sample, reduces the volume and weight of the sample, reduces the transportation and preservation cost, directly or indirectly connects with instrument sampling, improves the sensitivity of a detection method and reduces labor force.
The foregoing is merely illustrative of specific embodiments of the present invention, and the scope of the invention is not limited thereto, but any changes or substitutions that do not undergo the inventive effort should be construed as falling within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims (1)

1. The application of the organic pollutant in-situ solidification collection device in the water body volatility and semi-volatility organic pollutant in-situ solidification collection is characterized in that the device comprises a multifunctional metal cover (1), a probe input instrument (3), a sample bottle support (4), at least one sample bottle (8), a temperature sensing chamber (10) and a heating magnetic stirrer (14), wherein a support frame (13) is arranged at the lower part of the heating magnetic stirrer (14), the temperature sensing chamber (10) is arranged at the upper part of the heating magnetic stirrer (14), the sample bottle support (4) is arranged at the upper part of the temperature sensing chamber (10), a polytetrafluoroethylene magnetic rotor (12) is arranged in the sample bottle (8), the sample bottle (8) is detachably arranged in the sample bottle support (4), the multifunctional metal cover (1) is arranged at the top of the sample bottle (8) and is in threaded sealing connection with the sample bottle (8), the probe input instrument (3) is in threaded connection with the multifunctional metal cover (1), a sample input port (16) is arranged at the top of the multifunctional metal cover (1), a vacuum pump (17) and a clamping head (16) is arranged on the sample filter head (5), the multifunctional metal cover (1) is characterized in that a central area (19) of the multifunctional metal cover (1) is hollowed out, a polytetrafluoroethylene gasket (6) is arranged between the sample bottle (8) and the multifunctional metal cover (1), a temperature sensing rod (11) is arranged in the temperature sensing chamber (10), the probe input instrument (3) comprises a probe (7), a handle (20), a metal needle tube (21), a movable metal barrel (22) and a pressing sheet (23), the handle (20) is arranged at the top of the metal needle tube (21), the movable metal barrel (22) is arranged in the metal needle tube (21) and is in threaded connection with the metal needle tube (21), the pressing sheet (23) is arranged in the movable metal barrel (22), the probe (7) is arranged at the bottom of the pressing sheet (23), the pressing degree of the pressing sheet (23) is adjusted through rotating the movable metal barrel (22) to fix the probe (7), a storage chamber (15) is arranged on the support frame (13), and a visible window (9) is arranged on the side surface of the sample bottle (8), and the steps are as follows: determining a sampling point, opening a support frame (13), taking out a sampling hose (2) and a filter head (5) from a storage chamber (15), connecting one end of the hose (2) and the filter head (5) with a sample input port (16) on a multifunctional metal cover (1), additionally taking out the hose to connect a vacuum pump and a vacuum pump connecting port (17), tightly covering the multifunctional metal cover by screw threads in a rotating manner, inserting the other end of the hose (2) into a water area of the sampling point, opening a pump for in-situ sampling, observing the sampling progress through a visual window (9), closing the pump after a preset sampling amount is reached, closing the sample input port (16) and the vacuum pump connecting port (17) on the multifunctional metal cover (1), taking down the hose, opening the multifunctional metal cover (1), adding a polytetrafluoroethylene magnetic rotor (12) into a sample bottle (8), and covering the multifunctional metal cover (1) after a polytetrafluoroethylene gasket (6) is arranged; the method comprises the steps of adding water into a temperature sensing chamber (10), opening a micro heating magnetic ion stirrer (14) for heating, taking out a probe input instrument (3), rotating a movable metal barrel (22), loosening a pressing sheet (23), putting in a probe (7), rotating the movable metal barrel (22) to clamp the probe (7), penetrating a metal needle tube (21) into a sample bottle (8), realizing connection of the probe input instrument (3) and the sample bottle (8) through threaded rotation, stabilizing the probe input instrument (3) through a clamping device (18), setting up a polytetrafluoroethylene magnetic rotor rotating speed, timing and collecting, taking out the probe (7) by a reverse process collecting device, placing in a storage box for storage, and directly performing GC sample injection or analysis sample injection in the later stage.
CN201710043188.1A 2017-01-19 2017-01-19 Organic pollutant in-situ curing and collecting device and application thereof Active CN106840768B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109991388B (en) * 2019-03-26 2020-09-11 清华大学 Experimental device and experimental method for researching migration of volatile organic compounds in soil
CN111076964B (en) * 2019-12-27 2021-04-06 中国科学院生态环境研究中心 In-situ collection device and method for soluble substances

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CN105301150A (en) * 2015-12-09 2016-02-03 中国地质科学院水文地质环境地质研究所 Field enrichment device for volatile organic compounds in underground water
CN205210050U (en) * 2015-12-10 2016-05-04 上海福轩环保科技有限公司 Multi -deck formula VOC detection ring border cabin
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US5621522A (en) * 1995-04-05 1997-04-15 The United States Of America As Represented By The Secretary Of The Navy Fiber optic probe for determination of trace levels of organic pollutants using Raman spectroscopy
EP1010974A1 (en) * 1998-12-15 2000-06-21 Euratom Sampling probe for the in-situ extraction of organic micropollutants
US6286375B1 (en) * 1999-04-27 2001-09-11 The United States Of America As Represented By The Secretary Of The Air Force Apparatus for facilitating headspace sampling
JP2002122521A (en) * 2000-08-02 2002-04-26 Univ Waseda Diffusion detector for volatile organic compound or the like from building and construction material
TW200303423A (en) * 2002-02-07 2003-09-01 Yokowo Seisakusho Kk Probe equipped with capacitor and inspection jig using the same
JP2005087840A (en) * 2003-09-16 2005-04-07 Takenaka Komuten Co Ltd In situ measuring method and in situ cleaning method of soil and groundwater
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CN106226144A (en) * 2016-07-15 2016-12-14 浙江省海洋水产研究所 A kind of water sample scene pre-treatment and Organic substance enriching apparatus

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Inventor after: Bian Yongrong

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Inventor before: Song Yang

Inventor before: He Wenxiang

Inventor before: Wang Fang

Inventor before: Gu Chenggang

Inventor before: Yang Xinglun

Inventor before: Ye Mao

Inventor before: Ji Rongting