CN116106450B - Multi-medium pollution factor on-site detection system - Google Patents

Multi-medium pollution factor on-site detection system Download PDF

Info

Publication number
CN116106450B
CN116106450B CN202310088673.6A CN202310088673A CN116106450B CN 116106450 B CN116106450 B CN 116106450B CN 202310088673 A CN202310088673 A CN 202310088673A CN 116106450 B CN116106450 B CN 116106450B
Authority
CN
China
Prior art keywords
module
pollution factor
medium
sampling
detector
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
Application number
CN202310088673.6A
Other languages
Chinese (zh)
Other versions
CN116106450A (en
Inventor
王水
王海鑫
吕宗祥
冯亚松
钟道旭
尹芝华
柏立森
陶景忠
刘伟
傅博文
蒋林惠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Provincial Academy of Environmental Science
Original Assignee
Jiangsu Provincial Academy of Environmental Science
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangsu Provincial Academy of Environmental Science filed Critical Jiangsu Provincial Academy of Environmental Science
Priority to CN202310088673.6A priority Critical patent/CN116106450B/en
Publication of CN116106450A publication Critical patent/CN116106450A/en
Application granted granted Critical
Publication of CN116106450B publication Critical patent/CN116106450B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
    • G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2273—Atmospheric sampling
    • 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
    • G01N30/62—Detectors specially adapted therefor
    • G01N30/64—Electrical detectors
    • G01N30/68—Flame ionisation detectors
    • 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
    • G01N30/62—Detectors specially adapted therefor
    • G01N30/64—Electrical detectors
    • G01N30/70—Electron capture detectors
    • 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
    • G01N30/62—Detectors specially adapted therefor
    • G01N30/72—Mass spectrometers
    • 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
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Hydrology & Water Resources (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention discloses a multi-medium pollution factor on-site detection system, which comprises an atmospheric medium pollution factor sampling module, an aqueous medium pollution factor sampling module, a soil medium pollution factor sampling module, a multi-medium sample inlet, a sample processing module, a multi-module detection terminal and an industrial personal computer, wherein the atmospheric medium pollution factor sampling module is connected with the water medium pollution factor sampling module; the atmospheric medium pollution factor sampling module, the water medium pollution factor sampling module and the soil medium pollution factor sampling module are connected in parallel at the front end of the multi-medium sample inlet by adopting pipelines; the multi-medium sample inlet, the sample processing module and the multi-module detection terminal are sequentially connected through a pipeline; the multi-module detection terminal is connected to the industrial personal computer by adopting a data line. The system can realize in-situ detection of single medium pollution factors through independently operated multi-medium sampling and sampling units, can realize cross detection of multi-medium pollution characteristic factors through innovation of a detection terminal link mode, can be loaded on a mobile vehicle, is convenient and fast to move, and realizes efficient and timely monitoring work.

Description

Multi-medium pollution factor on-site detection system
Technical Field
The invention belongs to the technical field of environment detection, and particularly relates to a field detection system for water-soil-gas multi-medium pollution factors.
Background
According to statistics of Chinese environmental condition publication, explosion, toxic chemical pollution, oil leakage and the like caused by safety production accidents, traffic accidents and enterprise pollution discharge become main causes of sudden environmental accidents. The occurrence of sudden environmental pollution events has uncertainty, the pollutants are discharged in a concentrated way in a short time, and the on-site rapid detection is a basic condition for realizing rapid emergency treatment of the pollutants in the soil, the earth surface, the underground water and the atmospheric environment.
The environment sampling technology in China starts late, and early stage mainly aims at sampling the lake phase stratum and developing the research on the earth climate and the geographical environment development. With the rapid promotion of soil pollution prevention and control work, the weaknesses of low in-situ sampling and in-situ detection technology and technical specification deletion in China are gradually exposed, and a complete in-situ sampling technology system is not formed yet. At present, no movable field detection technical equipment integrating soil-water-gas multi-medium pollution factor detection into a whole exists at home and abroad.
Disclosure of Invention
The invention aims to: the invention aims to solve the technical problem of providing a multi-medium full-element pollution factor on-site detection system for realizing on-site detection integrating soil-water-gas multi-medium pollution factor detection.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the multi-medium pollution factor on-site detection system comprises an atmospheric medium pollution factor sampling module, an aqueous medium pollution factor sampling module, a soil medium pollution factor sampling module, a multi-medium sample inlet, a sample processing module, a multi-module detection terminal and an industrial personal computer;
the atmospheric medium pollution factor sampling module, the water medium pollution factor sampling module and the soil medium pollution factor sampling module are connected in parallel at the front end of the multi-medium sample inlet by adopting pipelines; the multi-medium sample inlet, the sample processing module and the multi-module detection terminal are sequentially connected through a pipeline;
the multi-module detection terminal is connected to the industrial personal computer by adopting a data line.
Further, the atmospheric medium pollution factor sampling module comprises an air sampling main pipe; the air sampling main pipe comprises an upper pipe, a lower pipe, a connecting pipe, a fixed bracket and a dust cap, wherein the upper pipe and the lower pipe form a sampling main pipe; the upper pipe, the lower pipe and the connecting pipe are sequentially connected through the clamping ring from top to bottom; the fixed support is integrally formed at the bottom of the connecting pipe; the dustproof cap is arranged at the top of the upper pipe; a window which is communicated with the upper pipe and used for introducing an air sample into the pipe is arranged below the dustproof cap; the tested air sample enters the sampling main pipe through the dust cap, flows through the upper pipe and the lower pipe and is discharged by the induced draft fan.
The side surface of the lower pipe is provided with a group of sampling ports, and the sampling ports are connected with a multi-medium sample inlet through a pipeline; the heating wire is arranged in the lower pipe and is connected to an external power supply through a power wire;
one side of the connecting pipe is opened and is connected with the induced draft fan through a hose; the bottom side of the connecting pipe is provided with a group of exhaust gas discharge ports.
Furthermore, the atmospheric medium pollution factor sampling module also comprises a weather six-parameter instrument which can monitor parameters including atmospheric temperature, humidity, air pressure, wind direction, wind speed and rainfall; the weather six-parameter instrument is connected to the industrial personal computer through a data line.
Specifically, the water medium pollution factor sampling module is a sweeping and trapping device; the purging and trapping device comprises a purging and trapping box body and a sampling arm; the purging and catching box body is internally provided with a group of constant temperature cavities, and each constant temperature cavity is internally provided with a liquid sampling bottle or an empty bottle. The sampling arm is provided with an air inlet needle head and an air outlet needle head, the air inlet needle head is positioned at the upper part of the sampling arm, and the air outlet needle head is positioned at the bottom of the sampling arm. The air outlet needle penetrates into the position below the liquid level of the sample, the air inlet needle is positioned above the liquid level of the sample, and the volatile VOCs sample is collected; the sampling arm can be lifted up and rotated for replacement of the purge bottle.
Specifically, the soil medium pollution factor sampling module adopts an integrated measurement while drilling device; the integrated measurement while drilling device is composed of a low-disturbance direct-pushing drilling machine and a film interface detection module.
Specifically, the sample processing module comprises a sample dewatering device and a dynamic diluting instrument which are respectively arranged on a conveying pipeline between the multi-medium sample inlet and the multi-module detection terminal. The water removing device is formed by connecting a silica gel water removing pipe and a molecular sieve water removing pipe in series, and the silica gel is subjected to preliminary dehydration and the molecular sieve is subjected to deep dehydration. The dynamic diluter adopts a standard 4U case, is universal to a standard environment-friendly monitoring cabinet, adopts precise control of standard gas and dilution gas sample injection amount for dilution, and ensures the accuracy and linearity of the diluter.
Specifically, the multi-module detection terminal comprises a flame ionization detector, an electron capture detector, an ammonia analyzer and a gas-phase mass spectrometer (GC-MS); the flame ionization detector, the electron capture detector, the ammonia analyzer and the gas-phase mass spectrometer are connected in parallel on the sample gas conveying pipeline and are respectively connected to the industrial personal computer through data lines.
Further, the Flame Ionization Detector (FID) and the Electron Capture Detector (ECD) are combined in parallel to form a PN-FID and PN-ECD dual-detector module, and the PN-FID and the PN-ECD dual-detector module are connected to an industrial personal computer by adopting the same data port.
Further, the gas-phase mass spectrometer comprises an ultra-fast chromatographic separation device and a mass spectrum detector; the ultra-fast chromatographic separation device is connected to the sample inlet end of the mass spectrum detector by a passivating conduit.
Further, the detection system further comprises a Flame Photometric Detector (FPD); the passivating pipeline outlet at the rear end of the ultra-fast chromatographic separation device is respectively connected to a mass spectrum detector, a Flame Photometric Detector (FPD) and a double detector module consisting of a flame ionization detector and an electron capture detector; the flame luminosity detector (FPD) is connected to the industrial personal computer through a data line.
The system can form a greenhouse gas automatic detection module PN-GC-FID/ECD and an air malodor detection module PN-GC-FID/FPD through the combination of the detection ports. Wherein, the greenhouse gas automatic detection module PN-GC-FID/ECD adopts a gas chromatography (FID+ECD) method principle to detect CO in the atmosphere 2 、CH 4 、N 2 O、CO、SF 6 、NF 3 Factors, and the system is applicable to multi-scenario, different air source environmental systems. The air malodor detection module PN-GC-FID/FPD consists of a concentrated benzene series gas chromatograph, a concentrated sulfide gas chromatograph and an ammonia analyzer.
The chromatographic separation device in the concentrated benzene series gas-phase mass spectrometer module adopts a passivation pipeline and a device to eliminate the influence of malodorous factor adsorption on the system performance, and adopts a low-temperature cold trap composite adsorption tube to greatly increase the adsorption efficiency of substances, so that the detection of styrene, trimethylamine and expansion factors can be realized; the chromatographic separation device in the concentrated sulfide gas-phase mass spectrometer module adopts a passivation pipeline and a device, eliminates the influence of malodorous factor adsorption on system performance, greatly increases the adsorption efficiency of substances by adopting a low-temperature cold trap composite adsorption tube, and can realize the detection of carbon disulfide, hydrogen sulfide, methyl mercaptan, dimethyl sulfide and dimethyl disulfide.
Further, the measuring range of the ammonia analyzer is 0 to 50ppb at the minimum and 0 to 5ppm at the maximum.
And detecting methane and non-methane total hydrocarbon, namely, after filling the quantitative ring with gas to be detected and fully enriching the gas into the cold trap module by adopting negative pressure sample injection, switching a valve, rapidly passing the non-methane total hydrocarbon in the cold trap module through a before-arrival FID detector, measuring the concentration of the non-methane total hydrocarbon, separating methane from a sample in the methane quantitative ring through a filling column, and measuring the concentration of methane.
Further, the detection system is integrally loaded on a moving vehicle.
The beneficial effects are that:
(1) The invention provides a multi-medium pollution factor on-site detection system, which integrates soil-water-gas multi-medium pollution factor detection, and has the advantages that the existing environment pollution emergency event investigation and treatment are performed with high effect;
(2) The detection system of the invention aims at the detection of the water medium pollution factor, adopts a purging and trapping module, a double-detector module and a gas-phase mass spectrometer (GC-MS) module, and can realize the on-site qualitative and quantitative detection of the water medium pollution factor;
(3) The detection system aims at the detection of the soil medium pollution factor, and on one hand, the in-situ real-time detection of the soil pollution can be realized by an in-situ integrated measurement while drilling technology; on the other hand, the in-situ sampling-sweeping and trapping rapid detection system can realize in-situ sampling detection operation;
(4) Aiming at the detection of atmospheric medium pollution factors, the detection system of the invention integrates a plurality of environment online ultra trace monitoring systems such as PAMS, 117-VOCs, GHGs, malodorous factors, non-methane total hydrocarbons and the like; the method can measure the conventional parameters such as temperature and humidity, wind direction and wind speed, air pressure and rainfall in the ambient air in real time, and can also measure the strong capability of sucking dangerous substances such as non-methane total hydrocarbon, greenhouse gas, ozone precursors, malodorous factors and the like in the environment;
(5) The detection system integrates main key detection projects of atmosphere detection, water medium detection and soil detection, effectively enhances the environment monitoring capability and enriches the types of monitoring data. Meanwhile, the whole system can be loaded on a mobile vehicle, so that the mobile vehicle can be conveniently and quickly moved to the site, and efficient and timely monitoring work is realized.
Drawings
The foregoing and/or other advantages of the invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings and detailed description.
FIG. 1 is a schematic diagram of the overall structure of the multi-media pollution factor field detection system.
Fig. 2 is a schematic diagram of the structure of the air sampling manifold.
Fig. 3 is a schematic view of the overall structure of the purge-and-trap apparatus.
Fig. 4 is a schematic structural view of the sampling arm.
FIG. 5 shows the results of the in situ test.
Fig. 6 is a site pollution status display diagram.
Wherein each reference numeral represents:
1-an air sampling manifold; 101-upper tube; 102-down tube; 103-connecting pipes; 104-fixing the bracket; 105-a dust cap; 106-clamping rings; 107-sampling port; 108-a power line; 109-induced draft fan; 110-an exhaust gas discharge port; 2-sweeping and capturing devices; 201-purging the catch box body; 202-a sampling arm; 203-a constant temperature cavity; 3-an integrated measurement while drilling device; 4-; 5-a water removal device; 6-dynamic dilution instrument; 7-flame ionization detector; 8-electron capture detector; 9-ammonia analyzer; 10-ultra-fast chromatographic separation device; 11-passivating the pipe; 12-mass spectrometry detector; 13-flame photometric detector; 14-a weather six-parameter instrument; 15-industrial personal computer.
Detailed Description
The invention will be better understood from the following examples.
As shown in FIG. 1, the multi-medium pollution factor on-site detection system comprises an atmospheric medium pollution factor sampling module, an aqueous medium pollution factor sampling module, a soil medium pollution factor sampling module, a multi-medium sample inlet, a sample processing module, a multi-module detection terminal and an industrial personal computer. The whole detection system is integrally loaded on a mobile vehicle, so that the whole detection system can be conveniently and quickly moved to the site, and efficient and timely monitoring work is realized.
Specifically, the atmospheric medium pollution factor sampling module, the water medium pollution factor sampling module and the soil medium pollution factor sampling module are connected in parallel at the front end of the multi-medium sample inlet 4 by adopting pipelines; the multi-medium sample inlet 4, the sample processing module and the multi-module detection terminal are sequentially connected through pipelines.
The multi-module detection terminal is connected to the industrial personal computer 15 by adopting a data line, and the monitoring data are collected in the industrial personal computer 15 and displayed.
The multi-medium sample inlet 4 adopts a multi-interface design, each interface is respectively communicated with the factor sampling module, the water medium pollution factor sampling module, the soil medium pollution factor sampling module and the multi-module detection terminal, and valves are arranged at the interfaces for control.
As shown in fig. 2, the atmospheric pollution factor sampling module comprises an air sampling manifold 1; the air sampling main pipe 1 comprises an upper pipe 101, a lower pipe 102, a connecting pipe 103, a fixed bracket 104 and a dust cap 105, wherein the upper pipe and the lower pipe form a sampling main pipe; the upper pipe 101, the lower pipe 102 and the connecting pipe 103 are sequentially connected through a clamping ring 106 from top to bottom; the fixing support 104 is integrally formed at the bottom of the connecting pipe 103, the whole sampling pipe is fixed on a pavilion and a roof through the fixing support 104, and the fixing pipe enables the installation and the disassembly of the sampling main pipe to be very convenient. The dust cap 105 is installed on top of the upper pipe 101 to have a function of preventing rain and snow and dust so that larger particle dust and rain and snow water do not directly fall into the header pipe. A window which is communicated with the upper pipe 101 and used for introducing an air sample into the pipe is arranged below the dustproof cap 105; the air sample to be tested enters the sampling main pipe through the dust cap 105, flows through the upper pipe and the lower pipe and is discharged by the induced draft fan. The side surface of the lower pipe 102 is provided with a group of sampling ports 107, and the sampling ports 107 are connected with a multi-medium sample inlet through a pipeline; the lower tube 102 is internally provided with a heating wire which is connected to an external power supply through a power line 108 and has a heating dew removing function. In this embodiment, the number of sampling ports 107 is generally 3-5 according to the number of the matched instruments, and the heating power supply is powered by 36 volt-ampere voltage. One side of the connecting pipe 103 is opened and connected with the induced draft fan 109 through a hose; the bottom side of the connection pipe 103 is opened with a set of exhaust gas discharge ports 110 to keep the air inside the sampling space clean.
In this embodiment, the specific types and parameters of the air sampling manifold are shown in table 1.
TABLE 1
Specifically, the atmospheric medium pollution factor sampling module further comprises a weather six-parameter instrument 14, the model of which is PN-FWS-800, and can monitor parameters including atmospheric temperature, humidity, air pressure, wind direction, wind speed and rainfall; the weather six-parameter instrument 13 is connected to the industrial personal computer 15 through a data line.
As shown in fig. 3 and 4, the water medium pollution factor sampling module is a purge-and-trap device 2; the purging and trapping device 2 comprises a purging and trapping box 201 and a sampling arm 202; a group of constant temperature cavities 203 are arranged in the purging and capturing box 201, and liquid sampling bottles or empty bottles are placed in each constant temperature cavity 203. The sampling arm 202 is provided with an air inlet needle and an air outlet needle, the air inlet needle is positioned at the upper part of the sampling arm, and the air outlet needle is positioned at the bottom of the sampling arm. The air outlet needle penetrates into the position below the liquid level of the sample, the air inlet needle is positioned above the liquid level of the sample, and the volatile VOCs sample is collected; the sampling arm can be lifted up and rotated for replacement of the purge bottle. When not in use, the sampling arm 202 is placed in an empty bottle and fixed, firstly, the sampling arm 202 is prevented from being broken in the transportation process; second, to prevent the sampling arm 202 from being contaminated by prolonged exposure to air. During operation, a sampling bottle filled with a sample is placed in a constant temperature cavity for constant temperature for 20min, a purge gas is opened for purging after the temperature is constant, and the purge gas is closed and sample injection test is performed at the chromatographic end after the purging is completed. After the single sample test is completed, the purge needle is lifted and replaced into a second sample bottle for testing.
As shown in fig. 1, the soil medium pollution factor sampling module adopts an integrated measurement while drilling device 3; the integrated measurement while drilling device 3 is composed of a low-disturbance direct-pushing drilling machine (model EP-2000+) and a thin film interface detection module (model Geoprobe Systems).
Specifically, the sample processing module comprises a sample dewatering device 5 and a dynamic diluter 6, which are respectively arranged on a conveying pipeline between the multi-medium sample inlet and the multi-module detection terminal. The water removing device 5 is formed by connecting a silica gel water removing pipe and a molecular sieve water removing pipe in series, and the silica gel is primarily dehydrated and the molecular sieve is deeply dehydrated. The model 6 of the dynamic diluter is PN-DD1K-1000, a standard 4U machine box is adopted, the dynamic diluter is universal to a standard environment-friendly monitoring cabinet, and the precision and linearity of the diluter are ensured by adopting precise control of standard gas and dilution gas sample injection amount for dilution.
In the invention, the multi-module detection terminal comprises a flame ionization detector 7 (FID), an electron capture detector 8 (ECD), an ammonia analyzer 9 and a gas-phase mass spectrometer (GC-MS); the flame ionization detector 7, the electron capture detector 8, the ammonia analyzer 9 and the gas-phase mass spectrometer are connected in parallel on a sample gas conveying pipeline, and are respectively connected to the industrial personal computer 15 through data lines.
The flame ionization detector 7 (FID) and the electron capture detector 8 (ECD) are combined in parallel to form a PN-FID and PN-ECD dual-detector module, and the PN-FID and the PN-ECD dual-detector module are connected to an industrial personal computer by adopting the same data port. After a sample enters, semi-qualitative and semi-quantitative detection is realized through a double detector FID/ECD; the ammonia analyzer may then be performed as desired or after chromatographic separation into different detectors.
A gas phase mass spectrometer (GC-MS) comprising an ultra-fast chromatographic separation device 10 and a mass spectrometer detector 12; the ultra-fast chromatographic separation device 10 is connected to the sample inlet end of a mass spectrometer detector 12 by a passivating conduit 11.
The detection system further comprises a flame photometric detector 13 (FPD); the outlet of a passivation pipeline 11 at the rear end of the ultra-fast chromatographic separation device 10 is respectively connected to a mass spectrum detector 12, a flame photometric detector 13 (FPD) and a double detector module consisting of a flame ionization detector 7 and an electron capture detector 8; the flame photometric detector 13 (FPD) is connected to the industrial personal computer 15 through a data line.
The system can form by the combination of the detection portsThe automatic detection module PN-GC-FID/ECD of greenhouse gas and the air malodor detection module PN-GC-FID/FPD. Wherein, the greenhouse gas automatic detection module PN-GC-FID/ECD adopts a gas chromatography (FID+ECD) method principle to detect CO in the atmosphere 2 、CH 4 、N 2 O、CO、SF 6 、NF 3 Factors, and the system is applicable to multi-scenario, different air source environmental systems. The air malodor detection module PN-GC-FID/FPD consists of a concentrated benzene series gas chromatograph, a concentrated sulfide gas chromatograph and an ammonia analyzer.
The chromatographic separation device in the concentrated benzene series gas-phase mass spectrometer module adopts a passivation pipeline and a device to eliminate the influence of malodorous factor adsorption on the system performance, and adopts a low-temperature cold trap composite adsorption tube to greatly increase the adsorption efficiency of substances, so that the detection of styrene, trimethylamine and expansion factors can be realized; the chromatographic separation device in the concentrated sulfide gas-phase mass spectrometer module adopts a passivation pipeline and a device, eliminates the influence of malodorous factor adsorption on system performance, greatly increases the adsorption efficiency of substances by adopting a low-temperature cold trap composite adsorption tube, and can realize the detection of carbon disulfide, hydrogen sulfide, methyl mercaptan, dimethyl sulfide and dimethyl disulfide.
Specifically, the model of the ammonia analyzer is PN-NH 3 The minimum range is 0-50 ppb, and the maximum range is 0-5 ppm.
And detecting methane and non-methane total hydrocarbon, namely, after filling the quantitative ring with gas to be detected and fully enriching the gas into the cold trap module by adopting negative pressure sample injection, switching a valve, rapidly passing the non-methane total hydrocarbon in the cold trap module through a before-arrival FID detector, measuring the concentration of the non-methane total hydrocarbon, separating methane from a sample in the methane quantitative ring through a filling column, and measuring the concentration of methane.
The multi-medium pollution factor on-site detection system is used for illegal landfill emergency disposal events in certain Yangzhou sites. The field enterprise is engaged in pesticide chemical production, is a modern novel pesticide science and technology enterprise integrating research, production and sales, and is mainly engaged in emulsion, suspending agent, powder and herbicide rechecking and subpackaging projects. After the masses report that the solid waste is buried in the factory of the enterprise, the detection system runs to the scene through a special vehicle to participate in emergency investigation. The weather six-parameter instrument 14 detects parameters of temperature, humidity, air pressure, wind direction, wind speed and rainfall in the atmosphere when the vehicle arrives at the site. Then, an atmospheric sample is collected in an air sampling main pipe 1 designed through vertical laminar flow sampling, a processed water sample is collected through a purging and trapping device 2, a soil sample is collected through an integrated while-drilling measuring device 3, the collected sample is enriched and concentrated, moisture in the sample is removed through a water removing device 5 in sequence, the concentration of the sample is diluted by a dynamic diluting instrument 6, and whether the sample contains total hydrocarbons and total chlorinated hydrocarbons or not can be detected by a Flame Ionization Detector (FID) 7 and an electron trapping detector (ECD) 8, so that semi-qualitative detection is carried out on the sample, and the pollution position can be rapidly identified; one path of the ammonia gas is passed through an ammonia analyzer 9, and a spectrum analysis method is adopted to identify pollution factors such as ammonia-containing malodorous gas in the sample; the other path of sample is separated by an ultra-fast chromatographic separation device 10, and finally enters a mass spectrum detector 12, a flame photometric detector 13 (FPD) or a flame ionization detector 7 (FID) and an electron capture detector 8 (ECD) through a passivation pipeline 11, the sample is subjected to qualitative and quantitative analysis, pollution factors such as PAMS, 117-VOCs, GHGs, malodorous factors, non-methane total hydrocarbons and the like can be identified, the final detection data are summarized to an industrial personal computer 15, the data analysis is carried out to obtain the detection result of FIG. 5, and the GC-MS spectrum of the organic product is obtained after the chromatographic separation and the mass spectrum detection, so that the detection peak of the organic substances such as ethylene and the like can be known. Finally, a field pollution condition display diagram is rapidly depicted, and in fig. 6, various basic parameters of running equipment, places and detection are displayed, including the transverse and longitudinal organic pollution ranges of the land parcels are depicted by using software such as EVS (event-driven system) and the like through summarization of detection data, and corresponding treatment suggestions are given. The local block of the conventional detection period needs 7-10d, and the detection vehicle period can be shortened by 3d; meanwhile, data are output on site, so that a large amount of manpower and material resources are saved; compared with the conventional means, the detection system realizes water-soil-gas multi-medium cross detection.
The invention provides a thought and a method for a multi-medium pollution factor on-site detection system, and the method and the way for realizing the technical scheme are numerous, the above is only a preferred embodiment of the invention, and it should be pointed out that a plurality of improvements and modifications can be made to those skilled in the art without departing from the principle of the invention, and the improvements and the modifications are also regarded as the protection scope of the invention. The components not explicitly described in this embodiment can be implemented by using the prior art.

Claims (6)

1. The multi-medium pollution factor on-site detection system is characterized by comprising an atmospheric medium pollution factor sampling module, an aqueous medium pollution factor sampling module, a soil medium pollution factor sampling module, a multi-medium sample inlet, a sample processing module, a multi-module detection terminal and an industrial personal computer; the detection system is integrally loaded on a mobile vehicle;
the atmospheric medium pollution factor sampling module, the water medium pollution factor sampling module and the soil medium pollution factor sampling module are connected in parallel at the front end of the multi-medium sample inlet by adopting pipelines; the multi-medium sample inlet, the sample processing module and the multi-module detection terminal are sequentially connected through a pipeline;
the multi-module detection terminal is connected to the industrial personal computer by adopting a data line;
the atmospheric medium pollution factor sampling module comprises an air sampling main pipe (1); the air sampling main pipe (1) comprises an upper pipe (101), a lower pipe (102), a connecting pipe (103), a fixed bracket (104) and a dust cap (105); the upper pipe (101), the lower pipe (102) and the connecting pipe (103) are sequentially connected through a clamping ring (106) from top to bottom; the fixed support (104) is integrally formed at the bottom of the connecting pipe (103); the dustproof cap (105) is arranged at the top of the upper pipe (101), and a window which is communicated with the upper pipe (101) and used for introducing an air sample into the pipe is arranged below the dustproof cap (105);
the side surface of the lower pipe (102) is provided with a group of sampling ports (107), and the sampling ports (107) are connected to the multi-medium sample inlet through pipelines; a heating wire is arranged in the lower pipe (102), and the heating wire is connected to an external power supply through a power wire (108);
one side of the connecting pipe (103) is opened and is connected with the induced draft fan (109) through a hose; a group of waste gas discharge ports (110) are formed on the side surface of the bottom of the connecting pipe (103);
the water medium pollution factor sampling module is a sweeping and trapping device (2); the purging and trapping device (2) comprises a purging and trapping box body (201) and a sampling arm (202); a group of constant temperature cavities (203) are arranged in the purging and catching box body (201), and liquid sampling bottles or empty bottles are placed in each constant temperature cavity (203); an air inlet needle head and an air outlet needle head are arranged on the sampling arm (202), the air inlet needle head is positioned at the upper part of the sampling arm (202), and the air outlet needle head is positioned at the bottom of the sampling arm (202);
the soil medium pollution factor sampling module adopts an integrated measurement while drilling device (3); the integrated measurement while drilling device (3) is composed of a low-disturbance direct-pushing drilling machine and a film interface detection module;
the sample processing module comprises a sample dewatering device (5) and a dynamic diluting instrument (6), which are respectively arranged on a conveying pipeline between the multi-medium sample inlet and the multi-module detection terminal.
2. The multi-medium pollution factor field detection system according to claim 1, wherein the atmospheric pollution factor sampling module further comprises a weather six-parameter instrument (14), and the weather six-parameter instrument (14) is connected to the industrial personal computer (15) through a data line.
3. The multi-medium pollution factor on-site detection system according to claim 1, wherein the multi-module detection terminal comprises a flame ionization detector (7), an electron capture detector (8), an ammonia analyzer (9) and a gas-phase mass spectrometer; the flame ionization detector (7), the electron capture detector (8), the ammonia analyzer (9) and the gas-phase mass spectrometer are connected in parallel on a sample gas conveying pipeline and are connected to the industrial personal computer through data lines respectively.
4. A multi-media pollution factor field detection system according to claim 3, wherein the flame ionization detector (7) and the electron capture detector (8) are combined in parallel to form a dual detector module and are connected to an industrial personal computer by using the same data port.
5. The multi-media pollution factor field detection system according to claim 3, wherein the gas phase mass spectrometer comprises an ultra-fast chromatographic separation device (10) and a mass spectrometer detector (12); the ultra-fast chromatographic separation device (10) is connected to the sample inlet end of a mass spectrum detector (12) through a passivating conduit (11).
6. The multi-media pollution factor field detection system of claim 5, further comprising a flame photometric detector (13); the outlet of a passivation pipeline (11) at the rear end of the ultra-fast chromatographic separation device (10) is respectively connected to a mass spectrum detector (12), a flame luminosity detector (13) and a double-detector module consisting of a flame ionization detector (7) and an electron capture detector (8); the flame luminosity detector (13) is connected to the industrial personal computer (15) through a data line.
CN202310088673.6A 2023-02-09 2023-02-09 Multi-medium pollution factor on-site detection system Active CN116106450B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310088673.6A CN116106450B (en) 2023-02-09 2023-02-09 Multi-medium pollution factor on-site detection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310088673.6A CN116106450B (en) 2023-02-09 2023-02-09 Multi-medium pollution factor on-site detection system

Publications (2)

Publication Number Publication Date
CN116106450A CN116106450A (en) 2023-05-12
CN116106450B true CN116106450B (en) 2023-10-10

Family

ID=86253813

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310088673.6A Active CN116106450B (en) 2023-02-09 2023-02-09 Multi-medium pollution factor on-site detection system

Country Status (1)

Country Link
CN (1) CN116106450B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116952880B (en) * 2023-08-07 2024-03-15 江苏省环境科学研究院 Detection system and detection method suitable for various media

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101949906A (en) * 2010-08-09 2011-01-19 四川省环境监测中心站 Decompressed purge-and-trap processing equipment for non-volatile organic compound in water sample and processing method thereof
CN207215526U (en) * 2017-09-01 2018-04-10 河北雷格科技发展有限公司 Glass type main-pipe for sampling environment air
KR101943947B1 (en) * 2018-07-20 2019-01-31 주식회사 효림 Real time pollution level automatic measurement sensor system of contaminants in contaminated soil or groundwater
CN110082423A (en) * 2019-06-05 2019-08-02 江苏省环境科学研究院 A kind of aerated zone soil gas quick sampling analytical equipment
CN113311090A (en) * 2021-06-03 2021-08-27 南京霍普斯科技有限公司 Online integrated monitoring system and detection method for volatile organic compounds and malodorous substances of fixed pollution source
CN114674957A (en) * 2022-03-25 2022-06-28 江苏省环境科学研究院 Site in-situ sampling detection device and method
CN115343381A (en) * 2022-07-11 2022-11-15 中国计量科学研究院 Detection device and method for volatile organic compounds in waste gas of fixed pollution source
CN115541303A (en) * 2022-08-04 2022-12-30 安徽省生态环境科学研究院 Pollute plot soil and water monitored control system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101949906A (en) * 2010-08-09 2011-01-19 四川省环境监测中心站 Decompressed purge-and-trap processing equipment for non-volatile organic compound in water sample and processing method thereof
CN207215526U (en) * 2017-09-01 2018-04-10 河北雷格科技发展有限公司 Glass type main-pipe for sampling environment air
KR101943947B1 (en) * 2018-07-20 2019-01-31 주식회사 효림 Real time pollution level automatic measurement sensor system of contaminants in contaminated soil or groundwater
CN110082423A (en) * 2019-06-05 2019-08-02 江苏省环境科学研究院 A kind of aerated zone soil gas quick sampling analytical equipment
CN113311090A (en) * 2021-06-03 2021-08-27 南京霍普斯科技有限公司 Online integrated monitoring system and detection method for volatile organic compounds and malodorous substances of fixed pollution source
CN114674957A (en) * 2022-03-25 2022-06-28 江苏省环境科学研究院 Site in-situ sampling detection device and method
CN115343381A (en) * 2022-07-11 2022-11-15 中国计量科学研究院 Detection device and method for volatile organic compounds in waste gas of fixed pollution source
CN115541303A (en) * 2022-08-04 2022-12-30 安徽省生态环境科学研究院 Pollute plot soil and water monitored control system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
污染场地修复过程挥发性有机物散逸规律及浓度分布分析;何绪文;房增强;程言君;于妍;罗梦;贾建丽;;环境化学;第34卷(第02期);284-292 *

Also Published As

Publication number Publication date
CN116106450A (en) 2023-05-12

Similar Documents

Publication Publication Date Title
Woolfenden Monitoring VOCs in air using sorbent tubes followed by thermal desorption-capillary GC analysis: summary of data and practical guidelines
Guo et al. Particle-associated polycyclic aromatic hydrocarbons in urban air of Hong Kong
Turpin et al. Measuring and simulating particulate organics in the atmosphere: problems and prospects
McGlenny et al. Canister-based method for monitoring toxic VOCs in ambient air
CN116106450B (en) Multi-medium pollution factor on-site detection system
CN104849374A (en) Non-methane hydrocarbon analysis equipment and method
Li et al. Characterization of polycyclic aromatic hydrocarbons in fog–rain events
CN111323525B (en) Non-methane total hydrocarbon and benzene series concentration on-line analysis and detection device
CN103616484B (en) Monitoring method of persistent organic pollutants in atmospheric particulates based on particulate continuous monitor
Turk et al. Sulfur hexafluoride as a gas-air tracer
KR102111121B1 (en) Source tracking system using drones and real-time mobile measurement vehicles
Tang et al. A new all‐season passive sampling system for monitoring NO2 in air
CN107727774B (en) Multi-sensor chromatographic detector and detection method
CN206177909U (en) Multi -functional air pocket washs, sampling device
Hippelein et al. Testing of a sampling system and analytical method for determination of semivolatile organic compounds in ambient air
CN111537293A (en) System and method for sampling and measuring HCl and/or HBr
CN101923076A (en) Detection and analysis method of benzene series contained in air
CN201130172Y (en) Thermal desorption instrument gasometry flow circuit apparatus
Leitner et al. UAV-based sampling systems to analyse greenhouse gases and volatile organic compounds encompassing compound-specific stable isotope analysis
CN203203840U (en) Soil petroleum hydrocarbon contamination sampling system
CN206248653U (en) A kind of sewage automatic checkout system
Cheng et al. Using a micro sampler on a drone to extract organic vapors—A case study of monitoring industrial pollution
CN206177903U (en) Multi -functional gaseous detecting system
CN210863277U (en) Online alternating first-stage enrichment release mechanism for smoke pollutants
CN210953553U (en) Gaseous collection system of VOCs in ambient air

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