CN110082423A - A kind of aerated zone soil gas quick sampling analytical equipment - Google Patents
A kind of aerated zone soil gas quick sampling analytical equipment Download PDFInfo
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- CN110082423A CN110082423A CN201910485863.5A CN201910485863A CN110082423A CN 110082423 A CN110082423 A CN 110082423A CN 201910485863 A CN201910485863 A CN 201910485863A CN 110082423 A CN110082423 A CN 110082423A
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- 238000005070 sampling Methods 0.000 title claims abstract description 57
- 239000002680 soil gas Substances 0.000 title claims abstract description 28
- 238000004458 analytical method Methods 0.000 claims abstract description 44
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 claims abstract description 42
- 239000007789 gas Substances 0.000 claims abstract description 40
- 238000001514 detection method Methods 0.000 claims abstract description 31
- 238000010790 dilution Methods 0.000 claims abstract description 22
- 239000012895 dilution Substances 0.000 claims abstract description 22
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 239000005416 organic matter Substances 0.000 claims abstract description 11
- 238000004445 quantitative analysis Methods 0.000 claims abstract description 9
- 238000004451 qualitative analysis Methods 0.000 claims abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 34
- 238000010438 heat treatment Methods 0.000 claims description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 229910052594 sapphire Inorganic materials 0.000 claims description 7
- 239000010980 sapphire Substances 0.000 claims description 7
- 230000008054 signal transmission Effects 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000011897 real-time detection Methods 0.000 claims 2
- 239000002689 soil Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 9
- 239000002957 persistent organic pollutant Substances 0.000 description 7
- 239000000356 contaminant Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical group CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 4
- 238000011835 investigation Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000003802 soil pollutant Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—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
- G01N1/2294—Sampling soil gases or the like
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/64—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
-
- 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
- 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
- G01N30/72—Mass spectrometers
-
- 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
- G01N2001/2244—Exhaled gas, e.g. alcohol detecting
-
- 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
Abstract
The invention discloses a kind of aerated zone soil gas quick sampling analytical equipments, including the quick detection module of sampling module, PID, dilution module, GC-MS on-line real-time measuremen module and control analysis module；Sampling module samples underground volatile organic matter gas, and it is sent into the quick detection module of PID and is detected by pipeline, if concentration is higher than the measuring range of GC-MS on-line real-time measuremen module, it is then diluted to the measurement range for meeting GC-MS on-line real-time measuremen module by dilution module progress gas concentration, is then fed into GC-MS on-line real-time measuremen module and is detected；Otherwise, it is sent directly into GC-MS on-line real-time measuremen module and is detected；GC-MS on-line real-time measuremen module carries out qualitative and quantitative analysis to the gas of feeding, and measurement result is sent in control analysis module, forms the three-dimensional spatial distribution figure of different pollution factors.
Description
Technical field
The present invention relates to a kind of aerated zone soil gas quick sampling analytical equipments, belong to soil investigation sampling technique field.
Background technique
Currently, in soil aerated zone soil volatile organic contaminant normal surveying techniques, by temperature, soil moisture content
And the environment such as atmospheric pressure and inside even from weather it is obvious, in investigation result in SOIL GAS volatile organic contaminant concentration
Difference is even up to hundred times, therefore, develops a kind of aerated zone soil gas fast unit, and reducing weather and environment influences to soil
The influence of the concentration of volatile organic contaminant in gas, quick and precisely obtaining soil pollution contaminated sites situation has important meaning
Justice.In addition, volatile organic contaminant pollution surveys in contaminated site soil, conventional method is spot sampling, saves and turns
It transports and is detected in laboratory.Detection cycle is long, and sample preservation timeliness is short, and preservation condition requires high；Membrane interface samples currently on the market
Equipment, by being heated to 120 DEG C or so, so that volatile organic contaminant is used for quickly detecting through reaction film, and this method
Only promote the precipitation of soil organic pollutant by the method for heating, organic pollutant precipitation efficiency is limited；In addition in the market at
Ripe technology MIP technology does not have quick pollution factor and carries out qualitative and quantitative analysis, only provides the detection knot of PID and FID
Fruit, can not real time discriminating pollution factor and corresponding pollution concentration so that field investigation can not make sampling plan in real time
Adjustment, can only according to laboratory final result secondary or even multiple results modification sampling plan, repeatedly march into the arena-sampling-detect
The disadvantages of cumbersome process, not only wastes time, at high cost.
Summary of the invention
It is quick the technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of aerated zone soil gas
Sampling and analyzing device, to overcome that existing contaminated site technique for investigation is time-consuming, laborious, at high cost, effect is low and environment and weather
Influence the defect waited greatly.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is as follows:
A kind of aerated zone soil gas quick sampling analytical equipment, including the quick detection module of sampling module, PID, dilution mould
Block, GC-MS on-line real-time measuremen module and control analysis module；
The quick detection module of the sampling module, PID, dilution module and GC-MS on-line real-time measuremen module are sequentially connected,
And individually connect with control analysis module respectively, the operation of each module is controlled by controlling analysis module；
The sampling module samples underground volatile organic matter gas, and is sent into PID by pipeline and quickly detects
It is detected in module, if concentration is higher than the measuring range of GC-MS on-line real-time measuremen module, carries out gas by diluting module
Bulk concentration is diluted to the measurement range for meeting GC-MS on-line real-time measuremen module, is then fed into GC-MS on-line real-time measuremen module
In detected；Otherwise, it is sent directly into GC-MS on-line real-time measuremen module and is detected；The GC-MS on-line real-time measuremen
Module carries out qualitative and quantitative analysis to the gas of feeding, and measurement result is sent in control analysis module, is formed not
With the three-dimensional spatial distribution figure of pollution factor.
Specifically, the sampling module includes gas production drill bit, air collecting pipe, and the gas production drill bit is fast by air collecting pipe and PID
The connection of fast detection module, pass through gas production drill bit collect underground volatile organic matter gas and be sent into the quick detection module of PID into
Row detection.
The quick detection module of PID includes three-way connection, the first solenoid valve, PID detector；Described three-way connection one end
Sampling module is connected, the other end is connect by the first solenoid valve with PID detector, and there are also one end to connect with dilution module；It is described
First solenoid valve and PID detector are connect with control analysis module respectively, control opening for the first solenoid valve by control analysis module
Close, PID detector be ppb and ppm concentration magnitude detector, realize real-time online detection, to organic pollutant in gas into
Row half-quantitative detection, measurement data are sent in control analysis module and are analyzed.
The dilution module includes mixing tube, second solenoid valve, nitrogen cylinder, flowmeter and sapphire current limiter；It is described
Mixing tube is connect by sapphire current limiter with the quick detection module of PID, and the other end is connect by second solenoid valve with nitrogen cylinder,
There are also one end to be connected to GC-MS on-line real-time measuremen module；The flowmeter is used between second solenoid valve and nitrogen cylinder
The amount for entering nitrogen in mixing tube from nitrogen cylinder is monitored and controlled；The second solenoid valve, flowmeter analyze mould with control respectively
Block connection, by the folding of control analysis module control second solenoid valve, flowmeter measurement data is sent in control analysis module
It is analyzed.
The GC-MS on-line real-time measuremen module includes portable GC-MS, air inlet and the mixing tube of dilution module
One end connection carries out qualitative and quantitative analysis to the gas being sent into from mixing tube, and measurement result is sent to control analysis
In module.
The control analysis module includes mobile terminal, respectively with sampling module, the quick detection module of PID, dilution mould
Block, the connection of GC-MS on-line real-time measuremen module control the operation and signal transmission of each module.
Further, the gas production drill bit include drill bit, SOIL GAS acquisition side opening, heating component, thermocouple, sampling pipe with
And power supply and data line；The drill bit is located at bottommost, and top has closed sampler chamber, and the SOIL GAS acquisition side opening is opened
In on the side wall of sampler chamber, sampling pipe is connect with air collecting pipe at the top of sampler chamber, utilizes SOIL GAS acquisition side opening acquisition aeration zone soil
Earth gas produces underground volatile organic matter gas after then being collected by sampling pipe；The heating component is arranged in sampler chamber
Top, and be arranged around sampling pipe, thermocouple is between heating component and sampling pipe；Heating component and thermocouple pass through power supply
It connect temperature controller with data line, realizes that heating soil to assigned temperature promotes to volatilize to heating and temperature control is carried out in soil
Property organic gas is precipitated from soil；The temperature controller is connect with control analysis module.
Preferably, it is equipped with pagoda head at the top of the sampling pipe, is connect by pagoda head with air collecting pipe.
The utility model has the advantages that
1, apparatus of the present invention can have heating module, structure with the gas in Quick Acquisition aerated zone soil, sampling apparatus
Simply, small in size, easy to operate, the collecting efficiency of organic matter is high；It realizes that the semidefinite of PID numerical value in SOIL GAS quantifies detection, holds
The concentration scale of pollutant, determines extension rate in SOIL GAS, prevents excessive concentration from influencing the guarantor of subsequent GC-MS instrument pillar
Shield.
2, apparatus of the present invention realize real-time qualitative and the quantitative analysis of pollution factor by GC-MS analyzer, pass through control
Analysis module realizes the visualization of spatial distribution of the pollutant in aerated zone soil.
Detailed description of the invention
The present invention is done with reference to the accompanying drawings and detailed description and is further illustrated, of the invention is above-mentioned
And/or otherwise advantage will become apparent.
Fig. 1 is apparatus of the present invention overall structure diagram.
Fig. 2 is the partial structural diagram of apparatus of the present invention gas production drill bit.
Fig. 3 is the concentration profile of certain contaminated site PID organic pollutant detected using apparatus of the present invention.
Fig. 4 is the spatial distribution map of certain the contaminated site ortho-xylene detected using apparatus of the present invention.
Wherein, each appended drawing reference respectively represents: I sampling module；1-1 gas production drill bit；1 drill bit；2 SOIL GASs acquire side opening；3
Heating component；4 thermocouples；5 sampling pipes；6 pagoda heads；7 power supplys and data line；1-2 quartz sand layer；1-3 bentonite bed；1-4 is adopted
Tracheae；1-5 temperature controller；The quick detection module of II PID；2-1 three-way connection；The first solenoid valve of 2-2；2-3PID detector；III is dilute
Release module；3-1 mixing tube；3-2 second solenoid valve b；3-3 nitrogen cylinder；3-4 flowmeter；3-5 sapphire current limiter；ⅣGC-MS
On-line real-time measuremen module；4-1 portable GC-MS；V control analysis module；5-1 mobile terminal.
Specific embodiment
According to following embodiments, the present invention may be better understood.
Structure depicted in Figure of description, ratio, size etc., only to cooperate the revealed content of specification, with
Understand for those skilled in the art and read, be not intended to limit the invention enforceable qualifications, therefore does not have technically
Essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size can be generated not influencing the present invention
Under effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents can cover.Meanwhile
Cited such as "upper", "lower", "front", "rear", " centre " term in this specification are merely convenient to being illustrated for narration, and
It is non-that to limit the scope of the invention, relativeness is altered or modified, under the content of no substantial changes in technology, when
Also it is considered as the enforceable scope of the present invention.
As shown in Figure 1, the aerated zone soil gas quick sampling analytical equipment includes sampling module I, the quick detection module of PID
II, module III, GC-MS on-line real-time measuremen module IV and control analysis module V are diluted.
The quick detection module II of the sampling module I, PID, dilution module III and GC-MS on-line real-time measuremen module IV according to
Secondary connection, and individually connect with control analysis module V respectively, the operation of each module is controlled by controlling analysis module V.
The sampling module I samples underground volatile organic matter gas, and is sent into PID by pipeline and quickly detects
It is detected in module II, if concentration is higher than the measuring range of GC-MS on-line real-time measuremen module IV, passes through dilution module III
It carries out gas concentration and is diluted to the measurement range for meeting GC-MS on-line real-time measuremen module IV, it is real online to be then fed into GC-MS
When detection module IV in detected；Otherwise, it is sent directly into GC-MS on-line real-time measuremen module IV and is detected；The GC-
The gas of IV pair of MS on-line real-time measuremen module feeding carries out qualitative and quantitative analysis, and measurement result is sent to control point
It analyses in module V, forms the three-dimensional spatial distribution figure of different pollution factors.
Wherein, sampling module I passes through air collecting pipe 1-4 including gas production drill bit 1-1, air collecting pipe 1-4, the gas production drill bit 1-1
It is connect with the quick detection module II of PID, passes through that gas production drill bit 1-1 collects underground volatile organic matter gas and to be sent into PID quick
It is detected in detection module II.
The quick detection module II of PID includes three-way connection 2-1, the first solenoid valve 2-2, PID detector 2-3；The threeway
The one end connector 2-1 connects the air collecting pipe 1-4 of sampling module I, and the other end is connected by the first solenoid valve 2-2 and PID detector 2-3
It connects, there are also one end to connect with the mixing tube 3-1 of dilution module III；The first solenoid valve 2-2 and PID detector 2-3 respectively with
It controls analysis module V to connect, the folding of the first solenoid valve 2-2, PID detector 2-3 measurement is controlled by control analysis module V
Data are sent in control analysis module V and are analyzed.
Diluting module III includes mixing tube 3-1, second solenoid valve 3-2, nitrogen cylinder 3-3, flowmeter 3-4 and sapphire
Current limiter 3-5；The mixing tube 3-1 is connected by the three-way connection 2-1 of sapphire current limiter 3-5 and the quick detection module II of PID
It connects, the other end is connect by second solenoid valve 3-2 with nitrogen cylinder 3-3, and there are also one end to be connected to GC-MS on-line real-time measuremen mould
Block IV；The flowmeter 3-4 is mixed between second solenoid valve 3-2 and nitrogen cylinder 3-3 for monitoring to enter from nitrogen cylinder 3-3
Close the amount of nitrogen in pipe 3-1；The second solenoid valve 3-2, flowmeter 3-4 are connect with control analysis module V respectively, by controlling
Analysis module V controls the folding of second solenoid valve 3-2, and flowmeter 3-4 measurement data is sent in control analysis module V and carries out
Analysis.
GC-MS on-line real-time measuremen module IV includes portable GC-MS4-1, the mixing of air inlet and dilution module III
One end of pipe 3-1 connects, and qualitative and quantitative analysis is carried out to the gas being sent into from mixing tube 3-1, and measurement result is sent
Into control analysis module V.
Controlling analysis module V includes mobile terminal 5-1, is detected respectively with temperature controller 1-5, first solenoid valve 2-2, PID
Device 2-3, second solenoid valve 3-2, flowmeter 3-4, portable GC-MS4-1 connection control the operation and signal transmission of each module.
As shown in Fig. 2, gas production drill bit 1-1 includes drill bit 1, SOIL GAS acquisition side opening 2, heating component 3, thermocouple 4, adopts
Sample pipe 5 and power supply and data line 7；The drill bit 1 is located at bottommost, and top has closed sampler chamber, the SOIL GAS
Acquisition side opening 2 is opened on the side wall of sampler chamber, and sampling pipe 5 is connect by pagoda head 6 with air collecting pipe 1-4 at the top of sampler chamber, by ground
Lower volatile organic matter gas extraction；The heating component 3 is arranged above sampler chamber, and is arranged around sampling pipe 5, thermocouple
4 between heating component 3 and sampling pipe 5；Heating component 3 and thermocouple 4 pass through power supply and connect temperature controller 1-5 with data line 7,
The temperature controller 1-5 is connect with control analysis module V.
In certain contaminated site pollution surveys project, using the soil organic pollutant factor device for fast detecting to place
1 meter of organic contaminants in soil carries out organic polluted soil pollutant factors check and at figure.
Specific step is as follows:
Step 1: sampling soil gas well is built up, stands 24 hours or more after well-flushing；
Step 2: starting mobile terminal 5-1 is powered control to instrument；
Step 3: the nitrogen cylinder 3-3 in dilution module is opened, is supplied for automatic dilution module；
Step 4: opening heating component 3, stablizes to temperature at 120 DEG C or so；
Step 5: opening the first solenoid valve 2-2, starts PID detector 2-3, carries out the detection of organic pollutant concentration, really
Determine extension rate；
Step 6: second solenoid valve 3-2 is opened, the testing requirements for meeting portable GC-MS4-1 are diluted to；
Step 7: opening portable GC-MS, carries out qualitative and quantitative detection to pollutant；
Step 8: measurement data is sent to mobile terminal by portable GC-MS, and mobile terminal forms dirt after analysis is handled
Contaminate the three-dimensional distribution map of the organic contamination of place three-dimensional space.
PID (Fig. 3) is shown as the concentration of the organic pollutant of 22~4800ppm, respectively in points such as points 5,8,9,35
Extension rate is 100 times, is 10 times in the points extension rates such as 4,7,10,17,36,37,41, other points are passed through without dilution
The spatial distribution that ortho-xylene is measured after GC-MS detection is as shown in Figure 4.
The present invention provides the thinkings and method of a kind of aerated zone soil gas quick sampling analytical equipment, implement the skill
There are many method and approach of art scheme, the above is only a preferred embodiment of the present invention, it is noted that this technology is led
For the those of ordinary skill in domain, various improvements and modifications may be made without departing from the principle of the present invention, these
Improvements and modifications also should be regarded as protection scope of the present invention.The available prior art of each component part being not known in the present embodiment
It is realized.
Claims (8)
1. a kind of aerated zone soil gas quick sampling analytical equipment, which is characterized in that quickly detected including sampling module (I), PID
Module (II), dilution module (III), GC-MS on-line real-time measuremen module (IV) and control analysis module (V)；
The sampling module (I), the quick detection module of PID (II), dilution module (III) and GC-MS on-line real-time measuremen module
(IV) it is sequentially connected, and is individually connect with control analysis module (V) respectively, each module is controlled by control analysis module (V)
Operation；
The sampling module (I) samples underground volatile organic matter gas, and is sent into PID by pipeline and quickly detects mould
It is detected in block (II), if concentration is higher than the measuring range of GC-MS on-line real-time measuremen module (IV), passes through dilution module
(III) it carries out gas concentration and is diluted to the measurement range for meeting GC-MS on-line real-time measuremen module (IV), be then fed into GC-MS and exist
It is detected in line real-time detection module (IV)；Otherwise, it is sent directly into GC-MS on-line real-time measuremen module (IV) and is examined
It surveys；The GC-MS on-line real-time measuremen module (IV) carries out qualitative and quantitative analysis to the gas of feeding, and by measurement result
It is sent in control analysis module (V), forms the three-dimensional spatial distribution figure of different pollution factors.
2. aerated zone soil gas quick sampling analytical equipment according to claim 1, which is characterized in that the sampling module
It (I) include gas production drill bit (1-1), air collecting pipe (1-4), the gas production drill bit (1-1) is quickly examined by air collecting pipe (1-4) with PID
Module (II) connection is surveyed, volatile organic matter gas in underground is collected by gas production drill bit (1-1) and is sent into the quick detection module of PID
(II) it is detected in.
3. aerated zone soil gas quick sampling analytical equipment according to claim 1, which is characterized in that the PID is quick
Detection module (II) includes three-way connection (2-1), the first solenoid valve (2-2), PID detector (2-3)；Three-way connection (the 2-
1) one end connection sampling module (I), the other end are connect by the first solenoid valve (2-2) with PID detector (2-3), and there are also one end
It is connect with dilution module (III)；First solenoid valve (2-2) and PID detector (2-3) respectively with control analysis module (V)
Connection, the folding of the first solenoid valve (2-2) is controlled by control analysis module (V), and PID detector (2-3) measurement data is sent to
It is analyzed in control analysis module (V).
4. aerated zone soil gas quick sampling analytical equipment according to claim 1, which is characterized in that the dilution module
It (III) include mixing tube (3-1), second solenoid valve (3-2), nitrogen cylinder (3-3), flowmeter (3-4) and sapphire current limiter
(3-5)；The mixing tube (3-1) is connect by sapphire current limiter (3-5) with the quick detection module of PID (II), and the other end is logical
It crosses second solenoid valve (3-2) to connect with nitrogen cylinder (3-3), there are also one end to be connected to GC-MS on-line real-time measuremen module (IV)；Institute
It states flowmeter (3-4) to be located between second solenoid valve (3-2) and nitrogen cylinder (3-3), be mixed for monitoring to enter from nitrogen cylinder (3-3)
Close the amount of nitrogen in pipe (3-1)；The second solenoid valve (3-2), flowmeter (3-4) connect with control analysis module (V) respectively
It connects, the folding of second solenoid valve (3-2) is controlled by control analysis module (V), flowmeter (3-4) measurement data is sent to control
It is analyzed in analysis module (V).
5. aerated zone soil gas quick sampling analytical equipment according to claim 4, which is characterized in that the GC-MS exists
Line real-time detection module (IV) includes portable GC-MS (4-1), air inlet and the mixing tube (3-1) of dilution module (III)
One end connection, carries out qualitative and quantitative analysis to the gas being sent into from mixing tube (3-1), and measurement result is sent to control
In analysis module (V).
6. aerated zone soil gas quick sampling analytical equipment according to claim 1, which is characterized in that the control analysis
Module (V) includes mobile terminal (5-1), respectively with sampling module (I), the quick detection module of PID (II), dilution module
(III), GC-MS on-line real-time measuremen module (IV) connects, and controls the operation and signal transmission of each module.
7. aerated zone soil gas quick sampling analytical equipment according to claim 2, which is characterized in that the gas production drill bit
(1-1) include drill bit (1), SOIL GAS acquisition side opening (2), heating component (3), thermocouple (4), sampling pipe (5) and power supply with
Data line (7)；The drill bit (1) is located at bottommost, and top has closed sampler chamber, and the SOIL GAS acquires side opening (2)
It opens on the side wall of sampler chamber, sampling pipe (5) is connect with air collecting pipe (1-4) at the top of sampler chamber, by underground volatile organic matter gas
Body extraction；The heating component (3) is arranged above sampler chamber, and is arranged around sampling pipe (5), and thermocouple (4) is located at heating
Between component (3) and sampling pipe (5)；Heating component (3) and thermocouple (4) pass through power supply and connect temperature controller (1- with data line (7)
5), the temperature controller (1-5) connect with control analysis module (V).
8. aerated zone soil gas quick sampling analytical equipment according to claim 7, which is characterized in that the sampling pipe
(5) top is equipped with pagoda head (6), is connect by pagoda head (6) with air collecting pipe (1-4).
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