CN115343403B - Detection device for benzene series in underground water of typical pesticide contaminated site - Google Patents
Detection device for benzene series in underground water of typical pesticide contaminated site Download PDFInfo
- Publication number
- CN115343403B CN115343403B CN202210979880.6A CN202210979880A CN115343403B CN 115343403 B CN115343403 B CN 115343403B CN 202210979880 A CN202210979880 A CN 202210979880A CN 115343403 B CN115343403 B CN 115343403B
- Authority
- CN
- China
- Prior art keywords
- communicated
- benzene series
- strip
- box body
- underground water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
- G01N30/12—Preparation by evaporation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
- G01N30/12—Preparation by evaporation
- G01N2030/121—Preparation by evaporation cooling; cold traps
- G01N2030/122—Preparation by evaporation cooling; cold traps cryogenic focusing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
- G01N30/12—Preparation by evaporation
- G01N2030/125—Preparation by evaporation pyrolising
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Abstract
The invention relates to the technical field of detection of benzene series in underground water, and discloses a detection device for benzene series in a typical pesticide polluted site, which comprises a collection device for collecting underground water, a detection device connected with the collection device and used for detecting benzene series, and a filtering device arranged between the collection device and the detection device; the collecting device comprises a groundwater collecting rod used for entering soil, a liquid collecting port arranged at the lower end of the groundwater collecting rod, a suction filtering pipe arranged at the upper end of the groundwater collecting rod and communicated with the filtering device, and a collecting communicating pipe arranged at the center of the groundwater collecting rod and communicated with the suction filtering pipe and the liquid collecting port; the device can effectively separate benzene series in the underground water, can effectively collect the separated benzene series, and is beneficial to improving the detection precision of the benzene series in the underground water.
Description
Technical Field
The invention relates to the technical field of detection of benzene series in underground water, in particular to a detection device for benzene series in underground water in a typical pesticide pollution field.
Background
Benzene series can be widely detected in human living and living environments due to production and living pollution. And has strong harm to blood, nerves and reproductive system of human body. Developed countries have generally used the concentration of benzene series in the atmosphere as one of the contents of routine monitoring of the atmospheric environment, and have regulated strict indoor and outdoor air quality standards. The benzene series sampling method can be divided into a container trapping method, a solid phase adsorption method/solvent elution method, a solid phase microextraction method, a solid phase adsorption method, a thermal desorption method and a low-temperature sampling method. The container trapping method has the advantage that no adsorbent is adopted, so that penetration, decomposition and desorption during the use of the adsorbent can be avoided, and the same sample component can be analyzed for multiple times.
Examples of the method for measuring the benzene series include Gas Chromatography (GC), gas chromatography/mass spectrometry (GC/MS) and fluorescence spectrophotometry, and membrane-guided mass spectrometry. Among them, gas chromatography/mass spectrometry are most commonly used. The gas chromatography-mass spectrometry has high separation capability and accurate qualitative discrimination capability, can initially detect chromatographic peaks which are not separated, has high sensitivity and reliability, becomes a basic analysis method for measuring substance detection, and has been widely applied to the field of environmental monitoring.
Unlike the detection of benzene series in air, the prior art generally cannot effectively separate benzene series in groundwater when detecting benzene series in groundwater, and thus cannot accurately detect benzene series in groundwater.
Disclosure of Invention
The invention solves the technical problems that: the prior art can not completely separate benzene series in underground water, and the efficiency of capturing the separated benzene series is low, so that the method is not beneficial to the accurate detection of the benzene series.
The technical scheme of the invention is as follows: the detection device for the benzene series of the underground water of the typical pesticide contaminated site comprises a collection device for collecting the underground water, a detection device connected with the collection device and used for detecting the benzene series, and a filtering device arranged between the collection device and the detection device;
the collecting device comprises a groundwater collecting rod used for entering soil, a liquid collecting port arranged at the lower end of the groundwater collecting rod, a suction filtering pipe arranged at the upper end of the groundwater collecting rod and communicated with the filtering device, and a collecting communicating pipe arranged at the center of the groundwater collecting rod and communicated with the suction filtering pipe and the liquid collecting port;
the detection device comprises a protection box body, a gas chromatograph detector and a vertical convection blowing device, wherein the gas chromatograph detector is arranged on the protection box body and used for detecting benzene series, and the vertical convection blowing device is arranged in the protection box body;
the vertical convection purging device comprises a circulating overflow system communicated with the filtering device, a carrier gas purging system communicated with the circulating overflow system and a trapping system communicated with the carrier gas purging system and the gas chromatograph;
the circulating overflow system comprises a main overflow box body horizontally arranged in the protection box body, a water inlet calandria communicated with the bottom of the main overflow box body and the filtering device, a recovery box body horizontally arranged right below the main overflow box body, and a convection blowing communicating vessel vertically arranged on the sides of the main overflow box body and the recovery box body;
the recycling box body is provided with a circulating negative pressure pump communicated with the main overflow box body;
the two sides of the main overflow box body, which are close to the upper part, are provided with strip overflow notch;
the convection blowing communicating vessel comprises a vertical flat channel, the upper end of which is communicated with the strip overflow notch, the lower end of which is communicated with the recovery box body, and a drainage plate arranged in the vertical flat channel; the drainage plate is close to one side of the strip-shaped overflow notch;
the carrier gas purging system comprises an air inlet assembly arranged at the lower end of the side surface of the vertical flat channel, an air outlet assembly arranged at the upper end of the side surface of the vertical flat channel, and a carrier gas supply device communicated with the air inlet assembly;
the air inlet assembly and the air outlet assembly are communicated with the vertical flat channel and are far away from one side of the strip-shaped overflow notch.
Further, the air inlet assembly comprises a strip-shaped air inlet which is arranged on the side face of the vertical flat channel and is horizontally arranged, a carrier gas guide plate which is arranged in the strip-shaped air inlet and is obliquely arranged, and an electric heating assembly which is arranged in the strip-shaped air inlet;
the carrier gas guide plate can enable carrier gas to flow upwards in the vertical flat channel and away from one side of the drainage plate.
Description: the carrier gas guide plate is obliquely arranged in the vertical flat channel, so that carrier gas flows upwards along the outer side of the vertical flat channel, and underground water overflowed in the strip-shaped overflow notch flows downwards along the inner side of the vertical flat channel, and therefore air flow formed by the carrier gas can form convection sweeping for the underground water; a large amount of benzene series can be transferred into carrier gas through convection blowing, so that separation of underground water and benzene series is realized, and the next pyrolysis and detection are facilitated.
Further, the air outlet assembly comprises a strip-shaped air outlet, and a carrier gas communicating pipe for communicating the strip-shaped air outlet with the trapping system; the strip-shaped air outlet is communicated with the vertical flat channel in a sealing way through a horizontally extending separation channel; the separation channel is located above the vertical flat channel.
Description: the separation channel horizontally extends, when the underground water wrapped by the carrier gas runs upwards, the underground water and the separation channel form impact due to the horizontally arranged separation channel, and then fall back into the vertical flat channel under the action of gravity; the carrier gas flow enters the condensing tube through the strip-shaped air outlet of the separation channel; the underground water and the carrier gas can be effectively separated through the separation channel, and adverse effects on detection of benzene series caused by a large amount of underground water entering the condensation pipe are avoided.
Further, the trapping system comprises two groups of condensing pipes which are respectively communicated with the air outlet assembly, pyrolyzers which are arranged in the middle of the condensing pipes and are communicated with the two groups of condensing pipes, two groups of refrigerating assemblies which are respectively sleeved outside the condensing pipes, and a temperature regulator which is communicated with the refrigerating assemblies;
the pyrolyzer can heat the liquid in the condensing pipe to form steam and is communicated with the gas chromatographic detector.
Description: the carrier gas communicating pipe is used for introducing the carrier gas carrying the benzene series into the condensing pipe, the temperature regulator is used for refrigerating to condense the benzene series in the condensing pipe into a liquid state, and the liquid state benzene series flows into the pyrolyzer; then the gas chromatograph detector detects the gaseous benzene series formed in the pyrolyzer; the carrier gas supplied from the carrier gas supply device is an inert gas such as helium or argon.
Further, the lengths of the vertical flat channel, the strip-shaped air outlet, the strip-shaped air inlet and the strip-shaped overflow notch are all consistent.
Description: the lengths of the vertical flat channel, the strip-shaped overflow groove, the strip-shaped air outlet and the strip-shaped air inlet are ensured to be consistent, so that the maximum purging area is formed during vertical convection purging, and the benzene series can be fully transferred.
Further, the underground water collection rod comprises a plurality of cylindrical splicing rods connected by threaded connecting pieces; rib grooves extending along the axial direction are uniformly formed in the side wall of the cylindrical splicing rod.
Description: the setting through threaded connection spare can make the cylinder splice pole realize swing joint, is convenient for through the length of the whole groundwater collection pole of increase the number extension of cylinder splice pole, realizes gathering the groundwater of different degree of depth.
Further, the liquid collecting port comprises a plurality of liquid inlet holes which are uniformly arranged on the cylindrical splicing rod at the lowest end; the liquid inlet holes are respectively provided with an interception filter screen for blocking soil particles;
and a breaker is arranged right below the cylindrical splicing rod.
Description: when a worker inserts the underground water collection rod to the soil, the soil breaker is beneficial to enabling the underground water collection rod to downwards travel so as to destroy the soil at the front end; the setting of interception filter screen then can avoid big soil particle to get into the feed liquor downthehole, and blocks up groundwater collection rod.
Further, an anti-blocking component is sleeved on the lower end of the cylindrical splicing rod;
the anti-blocking assembly comprises a mud scraping sleeve movably sleeved at a liquid inlet hole on the side wall of the cylindrical splicing rod, a spring element sleeved on the side wall of the cylindrical splicing rod, the upper end of the spring element is fixed, the lower end of the spring element is connected with the mud scraping sleeve, a connecting lug is arranged on the side wall of the mud scraping sleeve, and a pull wire is connected with the connecting lug;
the stay wire can extend to the ground, and the stay wire can pull the mud scraping sleeve upwards to compress the spring element and enable the liquid inlet to leak out.
Description: the setting of anti-clogging device can strike off the soil on the interception filter screen, avoids interception filter screen to block up, is favorable to improving the collection efficiency to groundwater.
Further, the filtering device comprises a sediment filter cavity communicated with the suction filtration pipe, a water pump arranged at the joint of the lower end of the sediment filter cavity and the suction filtration pipe, a filtering component arranged at the upper end of the sediment filter cavity, and a supernatant water storage tank arranged at the upper end of the filtering component and communicated with the water inlet calandria.
Description: the filtering device can perform precipitation filtration on the collected underground water again, so that larger solid particles in the underground water are effectively removed, and damage to the collecting device caused by the solid particles is avoided.
The beneficial effects of the invention are as follows: the invention provides a detection device for benzene series in underground water of a typical pesticide contaminated site, which can enable underground water to circularly flow through a circulating overflow device, the underground water enters a vertical convection purging device through strip overflow notches at two sides, and benzene series in the underground water are completely transferred into carrier gas in a vertical convection purging mode while the underground water circularly overflows.
The benzene series in the carrier gas is captured by a capturing system and then is sent into a gas chromatograph for detection of the benzene series; the vertical convection sweeping device and the circulating overflow device provided by the device can effectively transfer benzene series in the underground water to carrier gas; the trapping system provided by the device can efficiently trap benzene series in carrier gas, so that the gas chromatograph detector can effectively and accurately detect the benzene series in underground water.
Drawings
FIG. 1 is a schematic view showing the overall structure of embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of a collecting device according to embodiment 1 of the present invention;
FIG. 3 is a schematic view showing the structure of a vertical convection purge apparatus according to embodiment 1 of the present invention;
FIG. 4 is a schematic diagram of the structure of the circulation overflow system and the carrier gas purging system according to embodiment 1 of the present invention;
FIG. 5 is a schematic view showing the structure of a trapping system in accordance with embodiment 1 of the present invention;
FIG. 6 is a schematic view showing the structure of a groundwater collection rod according to embodiment 2 of the invention;
FIG. 7 is a schematic view showing the construction of a breaker according to embodiment 2 of the present invention;
FIG. 8 is a schematic view showing the structure of an anti-clogging member in embodiment 3 of the present invention;
the device comprises a 1-collecting device, a 10-groundwater collecting rod, a 100-cylindrical splicing rod, a 101-threaded connector, a 102-rib groove, a 11-liquid collecting port, a 110-liquid inlet hole, a 111-interception filter screen, a 12-suction filtration pipe, a 13-collecting communicating pipe, a 14-earth breaker, a 15-anti-blocking component, a 150-mud scraping sleeve, a 151-spring element, a 152-connecting lug, a 153-stay wire, a 2-detecting device, a 20-protection box, a 21-gas chromatograph, a 3-filtering device, a 30-precipitation filter cavity, a 31-water pump, a 32-filtering component, a 33-supernatant groove, a 4-vertical convection purging device, a 5-circulation overflow system, a 50-main overflow box, a 51-water inlet calandria 52-recovery box, a 53-convection purging communicating pipe, a 54-circulation negative pressure pump, a 500-strip overflow notch, a 530-vertical flat channel, a 531-drainage plate, a 6-carrier gas system, a 60-air inlet component, a 61-outlet component, a 62-carrier gas supply device, a 600-air inlet, a 601-drainage plate, a 601-602-electric heating and 611, a heating and cooling and air outlet components, a temperature adjusting component, a 73-70-carrier gas channel, a cooling and a temperature adjusting component, a 73-carrier gas channel, a heating and a cooling and a 70-carrier gas channel.
Detailed Description
Example 1:
the detection device for benzene series in underground water of a typical pesticide contaminated site as shown in fig. 1 comprises a collection device 1 for collecting underground water, a detection device 2 connected with the collection device 1 and used for detecting benzene series, and a filtering device 3 arranged between the collection device 1 and the detection device 2;
the filtering device 3 comprises a sediment filter cavity 30 communicated with the suction filtration tube 12, a water pump 31 arranged at the joint of the lower end of the sediment filter cavity 30 and the suction filtration tube 12, a filtering component 32 arranged at the upper end of the sediment filter cavity 30, and a supernatant water storage tank 33 arranged at the upper end of the filtering component 32 and communicated with a water inlet drain tube 51.
As shown in fig. 2, the collecting device 1 comprises a groundwater collecting rod 10 for entering soil, a liquid collecting port 11 arranged at the lower end of the groundwater collecting rod 10, a suction filtering pipe 12 arranged at the upper end of the groundwater collecting rod 10 and communicated with the filtering device 3, and a collecting communicating pipe 13 arranged at the center of the groundwater collecting rod 10 and communicated with the suction filtering pipe 12 and the liquid collecting port 11;
the detection device 2 comprises a protection box body 20, a gas chromatograph detector 21 arranged on the protection box body 20 and used for detecting benzene series, and a vertical convection purging device 4 arranged in the protection box body 20;
as shown in fig. 3, the vertical convection purge device 4 includes a circulation overflow system 5 communicating with the filtering device 3, a carrier gas purge system 6 communicating with the circulation overflow system 5, and a trapping system 7 communicating the carrier gas purge system 6 with a gas chromatograph detector 21;
as shown in fig. 4, the circulation overflow system 5 includes a main overflow tank 50 horizontally disposed in the protection tank 20, a water inlet drain pipe 51 for communicating the bottom of the main overflow tank 50 with the filtering device 3, a recovery tank 52 horizontally disposed right below the main overflow tank 50, and a convection purge communicating vessel 53 vertically disposed at the sides of the main overflow tank 50 and the recovery tank 52;
the recycling box body 52 is provided with a circulating negative pressure pump 54 communicated with the main overflow box body 50;
the two sides of the main overflow box 50, which are close to the upper part, are provided with strip overflow notches 500;
the convection blowing communicating vessel 53 comprises a vertical flat channel 530, the upper end of which is communicated with the strip-shaped overflow notch 500, the lower end of which is communicated with the recovery box 52, and a drainage plate 531 arranged in the vertical flat channel 530; the drainage plate 531 is close to one side of the strip-shaped overflow notch 500;
the carrier gas purging system 6 comprises an air inlet assembly 60 arranged at the lower end of the side surface of the vertical flat channel 530, an air outlet assembly 61 arranged at the upper end of the side surface of the vertical flat channel 530, and a carrier gas supply device 62 communicated with the air inlet assembly 60; the carrier gas in the carrier gas supply device 62 is helium.
The air inlet assembly 60 and the air outlet assembly 61 are both communicated with the vertical flat channel 530 and are far away from the side of the strip-shaped overflow notch 500.
The air inlet assembly 60 comprises a strip-shaped air inlet 600 which is arranged at the side surface of the vertical flat channel 530 and is horizontally arranged, a carrier gas guide plate 601 which is arranged in the strip-shaped air inlet 600 and is obliquely arranged, and an electric heating assembly 602 which is arranged in the strip-shaped air inlet 600;
the carrier gas deflector 601 allows carrier gas to flow upwardly within the vertical flat channel 530 and away from the side of the flow guide plate 531.
The air outlet assembly 61 comprises a strip air outlet 610, and a carrier gas communicating pipe 611 for communicating the strip air outlet 610 with the trapping system 7; the strip-shaped air outlet 610 is in sealing communication with the vertical flat channel 530 through a horizontally extending separation channel 612; the separation channel 612 is located above the vertical flat channel 530.
As shown in fig. 5, the capturing system 7 includes two sets of condensation pipes 70 respectively connected to the air outlet assembly 61, a pyrolyzer 71 disposed in the middle of the condensation pipes 70 and connected to the two sets of condensation pipes 70, two sets of refrigeration assemblies 73 respectively sleeved outside the condensation pipes 70, and a temperature regulator 72 connected to the refrigeration assemblies 73;
the pyrolyzer 71 is capable of heating the liquid in the condenser tube 70 to form vapor and is in communication with the gas chromatograph 21.
The vertical flat channel 530, the strip-shaped air outlet 610, the strip-shaped air inlet 600, and the strip-shaped overflow notch 500 are all uniform in length.
The refrigeration assembly 73, the temperature regulator 72, the electric heating assembly 602, the carrier gas supply device 62, the gas chromatograph 21, the circulating negative pressure pump 54, and the water pump 31 all use products of the prior art, and specific product types can be selected by those skilled in the art as required.
Example 2
Unlike example 1, the following is:
as shown in fig. 6, the groundwater collection rod 10 includes three cylindrical splicing rods 100 connected by screw connectors 101; rib grooves 102 extending in the axial direction are uniformly formed on the side wall of the cylindrical splicing rod 100.
As shown in fig. 7, the liquid collecting port 11 includes 6 liquid inlet holes 110 uniformly formed on the cylindrical splicing rod 100 at the lowest end; the liquid inlet holes 110 are provided with interception filter screens 111 for blocking soil particles;
a breaker 14 is arranged right below the cylindrical splicing rod 100.
Wherein, the breaker 14 and the interception filter 111 are all made of the prior art, and specific product types can be selected by those skilled in the art according to the needs.
Example 3
Unlike example 2, the following is:
as shown in fig. 7, the lower end of the cylindrical splicing rod 100 is sleeved with an anti-blocking component 15;
the anti-blocking assembly 15 comprises a mud scraping sleeve 150 movably sleeved at the liquid inlet hole 110 on the side wall of the cylindrical splicing rod 100, a spring element 151 sleeved on the side wall of the cylindrical splicing rod 100, the upper end of the spring element is fixed, the lower end of the spring element is connected with the mud scraping sleeve 150, a connecting lug 152 arranged on the side wall of the mud scraping sleeve 150, and a pull wire 153 connected with the connecting lug 152;
the pull wire 153 can extend to the ground, and the pull wire 153 can pull the mud scraping sleeve 150 upwards to compress the spring element 151 and leak the liquid inlet 110.
Claims (8)
1. A detection device for benzene series of underground water in a typical pesticide contaminated site, which is characterized by comprising a collection device (1) for collecting underground water, a detection device (2) connected with the collection device (1) and used for detecting benzene series, and a filtering device (3) arranged between the collection device (1) and the detection device (2);
the collecting device (1) comprises a groundwater collecting rod (10) for entering soil, a liquid collecting port (11) arranged at the lower end of the groundwater collecting rod (10), a suction filtering pipe (12) arranged at the upper end of the groundwater collecting rod (10) and communicated with the filtering device (3), and a collecting communicating pipe (13) arranged at the center of the groundwater collecting rod (10) and communicated with the suction filtering pipe (12) and the liquid collecting port (11);
the detection device (2) comprises a protection box body (20), a gas chromatograph detector (21) arranged on the protection box body (20) and used for detecting benzene series, and a vertical convection purging device (4) arranged in the protection box body (20);
the vertical convection purging device (4) comprises a circulating overflow system (5) communicated with the filtering device (3), a carrier gas purging system (6) communicated with the circulating overflow system (5), and a trapping system (7) communicated with the carrier gas purging system (6) and the gas chromatograph detector (21);
the circulating overflow system (5) comprises a main overflow box body (50) horizontally arranged in the protection box body (20), a water inlet drain pipe (51) for communicating the bottom of the main overflow box body (50) with the filtering device (3), a recovery box body (52) horizontally arranged right below the main overflow box body (50), and a convection sweeping communicating vessel (53) vertically arranged on the sides of the main overflow box body (50) and the recovery box body (52);
the recycling box body (52) is provided with a circulating negative pressure pump (54) communicated with the main overflow box body (50);
the two sides of the main overflow box body (50) close to the upper part are provided with strip overflow notch (500);
the convection purging communicating vessel (53) comprises a vertical flat channel (530) with the upper end communicated with the strip overflow notch (500), the lower end communicated with the recovery box body (52), and a drainage plate (531) arranged in the vertical flat channel (530); the drainage plate (531) is close to one side of the strip-shaped overflow notch (500);
the carrier gas purging system (6) comprises an air inlet assembly (60) arranged at the lower end of the side surface of the vertical flat channel (530), an air outlet assembly (61) arranged at the upper end of the side surface of the vertical flat channel (530), and a carrier gas supply device (62) communicated with the air inlet assembly (60);
the air inlet assembly (60) and the air outlet assembly (61) are communicated with the vertical flat channel (530) and are far away from one side of the strip-shaped overflow notch (500);
the underground water collection rod (10) comprises a plurality of cylindrical splicing rods (100) connected by threaded connectors (101); rib grooves (102) extending along the axial direction are uniformly formed in the side wall of the cylindrical splicing rod (100).
2. A detection device for groundwater benzene series in a typical pesticide contaminated site according to claim 1, wherein the air intake assembly (60) comprises a strip air intake (600) disposed horizontally and laterally to a vertical flat passage (530), a carrier gas deflector (601) disposed obliquely within the strip air intake (600), and an electrical heating assembly (602) disposed within the strip air intake (600);
the carrier gas deflector (601) can enable carrier gas to flow upwards in the vertical flat channel (530) and away from the side of the drainage plate (531).
3. A detection device for groundwater benzene series in a typical pesticide contaminated site according to claim 2, wherein the gas outlet assembly (61) comprises a strip gas outlet (610), a carrier gas communicating pipe (611) communicating the strip gas outlet (610) with a trapping system (7); the strip-shaped air outlet (610) is communicated with the vertical flat channel (530) in a sealing way through a horizontally extending separation channel (612); the separation channel (612) is located above the vertical flat channel (530).
4. A detection device for groundwater benzene series in a typical pesticide contaminated site according to claim 3, wherein the trapping system (7) comprises two groups of condensing pipes (70) respectively communicated with the air outlet assembly (61), a pyrolyzer (71) arranged in the middle of the condensing pipes (70) and communicated with the two groups of condensing pipes (70), two groups of refrigerating assemblies (73) respectively sleeved outside the condensing pipes (70), and a temperature regulator (72) communicated with the refrigerating assemblies (73);
the pyrolyzer (71) can heat the liquid in the condensing pipe (70) to form steam and is communicated with the gas chromatography detector (21).
5. A detection apparatus for groundwater benzene series in a typical pesticide contaminated site according to claim 3, wherein the vertical flat channel (530), the strip-shaped air outlet (610), the strip-shaped air inlet (600) and the strip-shaped overflow notch (500) are all uniform in length.
6. The device for detecting benzene series in underground water of a typical pesticide contaminated site according to claim 1, wherein the liquid collecting port (11) comprises a plurality of liquid inlet holes (110) uniformly arranged on the cylindrical splicing rod (100) at the lowest end; the liquid inlet holes (110) are respectively provided with an interception filter screen (111) for blocking soil particles;
a breaker (14) is arranged under the cylindrical splicing rod (100).
7. The detection device for the benzene series of the underground water of the typical pesticide contaminated site according to claim 1, wherein an anti-blocking component (15) is sleeved on the lower end of the cylindrical splicing rod (100);
the anti-blocking assembly (15) comprises a mud scraping sleeve (150) movably sleeved at a liquid inlet hole (110) on the side wall of the cylindrical splicing rod (100), a spring element (151) sleeved on the side wall of the cylindrical splicing rod (100) and with the upper end fixed and the lower end connected with the mud scraping sleeve (150), a connecting lug (152) arranged on the side wall of the mud scraping sleeve (150), and a stay wire (153) connected with the connecting lug (152);
the stay wire (153) can extend to the ground, and the stay wire (153) can pull the mud scraping sleeve (150) upwards to compress the spring element (151) and enable the liquid inlet (110) to leak out.
8. The device for detecting benzene series in underground water of a typical pesticide polluted site according to claim 1, wherein the filtering device (3) comprises a precipitation filtering cavity (30) communicated with the suction filtering pipe (12), a water pump (31) arranged at the joint of the lower end of the precipitation filtering cavity (30) and the suction filtering pipe (12), a filtering component (32) arranged at the upper end of the precipitation filtering cavity (30), and a supernatant water storage tank (33) arranged at the upper end of the filtering component (32) and communicated with the water inlet drain pipe (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210979880.6A CN115343403B (en) | 2022-08-16 | 2022-08-16 | Detection device for benzene series in underground water of typical pesticide contaminated site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210979880.6A CN115343403B (en) | 2022-08-16 | 2022-08-16 | Detection device for benzene series in underground water of typical pesticide contaminated site |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115343403A CN115343403A (en) | 2022-11-15 |
| CN115343403B true CN115343403B (en) | 2023-05-26 |
Family
ID=83952131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210979880.6A Active CN115343403B (en) | 2022-08-16 | 2022-08-16 | Detection device for benzene series in underground water of typical pesticide contaminated site |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115343403B (en) |
Family Cites Families (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU887986A1 (en) * | 1980-02-08 | 1981-12-07 | Карагандинский Ордена Трудового Красного Знамени Политехнический Институт | Underground water sampler |
| JP3422689B2 (en) * | 1998-07-13 | 2003-06-30 | 国際航業株式会社 | Tube for collecting and observing contaminated groundwater |
| US7651866B2 (en) * | 2003-03-28 | 2010-01-26 | Teledyne Tekmar Company | Purge and trap concentrator with electrically adjusted purge flow |
| US20050258097A1 (en) * | 2004-01-08 | 2005-11-24 | Gjerde Douglas T | Method and device for extracting an analyte |
| CN101178392B (en) * | 2007-10-26 | 2011-05-18 | 山西大学 | Organic matter in water enriching concentrating instrument and control method thereof |
| US8196479B2 (en) * | 2009-10-20 | 2012-06-12 | Midwest Research Institute, Inc. | Portable multi-tube air sampler unit |
| WO2013036760A1 (en) * | 2011-09-07 | 2013-03-14 | Parker-Hannifin Corporation | Analytical system and method for detecting volatile organic compounds in water |
| CN204128883U (en) * | 2014-09-15 | 2015-01-28 | 浙江省海洋水产研究所 | A kind of solution concentrating instrument |
| CN107560926B (en) * | 2017-09-05 | 2020-02-18 | 河海大学 | Underwater VOCs purging and trapping device and purging and trapping method using same |
| CN207351774U (en) * | 2017-09-05 | 2018-05-11 | 河海大学 | A kind of volatile organic matter purge and trap device |
| CN109668973A (en) * | 2017-10-17 | 2019-04-23 | 中国石油化工股份有限公司 | The measuring method of gas station underground water pollutant |
| CN212134162U (en) * | 2018-10-31 | 2020-12-11 | 零排放(天津)工业设计院 | Sampling device for water quality monitoring |
| CN209495877U (en) * | 2019-01-03 | 2019-10-15 | 河海大学 | A kind of underground water sampler |
| CN110320092B (en) * | 2019-06-28 | 2021-04-16 | 清华大学 | Radionuclide enrichment method and device and system with same |
| CN211013633U (en) * | 2019-09-30 | 2020-07-14 | 江西志科检测技术有限公司 | Slender underground water sampler for small-caliber monitoring well |
| CN211013641U (en) * | 2019-11-15 | 2020-07-14 | 李海兵 | Hydrogeology is with groundwater and surface water depthkeeping quantitative sampler |
| CN211954801U (en) * | 2020-05-07 | 2020-11-17 | 山西潞安环保能源开发股份有限公司 | Sampling device for coal mine underground water quality detection |
| CN111579335A (en) * | 2020-06-12 | 2020-08-25 | 北京斯特普科技有限公司 | Novel circulation sweeps absorption distillation apparatus |
| CN111649990A (en) * | 2020-07-10 | 2020-09-11 | 黄河勘测规划设计研究院有限公司 | Underground water sampling device and sampling detection method thereof |
| CN212539769U (en) * | 2020-11-19 | 2021-02-12 | 天津环科环境咨询有限公司 | Groundwater quantitative sampling detection device |
| CN213979134U (en) * | 2020-12-03 | 2021-08-17 | 上海勘察设计研究院(集团)有限公司 | Modular double-layer monitoring well pipe device |
| CN214096714U (en) * | 2020-12-29 | 2021-08-31 | 北京飞燕石化环保科技发展有限公司 | Groundwater water quality monitoring water sample collection system |
| CN114002306A (en) * | 2021-11-12 | 2022-02-01 | 暨南大学 | Membrane sample injection structure for extracting volatile organic compounds in water through bubble enrichment |
| CN114280187A (en) * | 2021-12-24 | 2022-04-05 | 生态环境部南京环境科学研究所 | Method and equipment for detecting and analyzing benzene series in underground water of polluted site |
| CN114354786A (en) * | 2021-12-25 | 2022-04-15 | 生态环境部南京环境科学研究所 | Method for analyzing benzene series spatial distribution of underground water in polluted site based on pollution plume |
| CN114323807A (en) * | 2021-12-25 | 2022-04-12 | 生态环境部南京环境科学研究所 | Collecting device and collecting method for detecting benzene series in underground water |
-
2022
- 2022-08-16 CN CN202210979880.6A patent/CN115343403B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN115343403A (en) | 2022-11-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2016126013A (en) | Sample introduction device | |
| CN102455258A (en) | Trapping device for sampling dioxin in flue gas and application thereof | |
| CN108226269B (en) | In-situ and rapid detection method and device for volatile organic compounds in soil | |
| CN106841490A (en) | A kind of method of contained polycyclic aromatic hydrocarbon in detection surrounding air | |
| CN101706484B (en) | Method for synchronously purifying and separating organic extract of environmental medium step by step | |
| CN115343403B (en) | Detection device for benzene series in underground water of typical pesticide contaminated site | |
| SK281617B6 (en) | Equipment for sampling and work-up for analysis of pah and other organic compounds, and hydrogen fluoride and sulphur oxides | |
| CN111679008A (en) | GC-MS-MS method for simultaneously detecting volatile and semi-volatile acids, alcohols and phenols in tobacco leaves and cut tobacco | |
| CN114755349A (en) | Automatic analysis system and method for low-temperature double-column chromatography of atmospheric volatile organic compounds | |
| CN107490647B (en) | Method for quantitatively detecting organophosphorus pesticide chlorpyrifos in ambient air | |
| CN112731992A (en) | Full-automatic low temperature series valve who sweeps entrapment appearance keeps apart water trap | |
| CN112781938A (en) | Analysis device and method for condensation collection and determination of soluble ions in air | |
| CN112630323A (en) | Method for detecting 46 semi-volatile organic compounds in underground water | |
| CN112747975A (en) | Device and method for collecting atmospheric fine particulate concentrated solution on line and measuring heavy metal elements | |
| CN204594947U (en) | One prepares ion chromatograph | |
| CN112747974A (en) | Device and method for collecting atmospheric aerosol and measuring small-molecular organic acid through online concentration | |
| CN107966349B (en) | Gas-liquid separator for monitoring gas in liquid | |
| CN105203656A (en) | Shandong area insulator dirtiness water-soluble negative ion ingredient testing method | |
| CN112710743B (en) | Separation and detection method for impurities in carbonate solvent and application thereof | |
| KR20020057888A (en) | High collection efficiency method of ammonia gas and automated monitoring system | |
| CN211825868U (en) | Mass spectrometer waste liquid collection device | |
| CN110595824B (en) | Soil liquid light hydrocarbon field in-situ acquisition device and method | |
| Triantis et al. | Solid‐Phase Extraction of Cylindrospermopsin from Filtered and Drinking Water | |
| CN103954477A (en) | Disposable depth setting in-situ sampling bottle of volatile organic water sample | |
| CN218445262U (en) | Ion mobility spectrometry headspace purging and sampling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |