CN201130172Y - Thermal desorption instrument gasometry flow circuit apparatus - Google Patents
Thermal desorption instrument gasometry flow circuit apparatus Download PDFInfo
- Publication number
- CN201130172Y CN201130172Y CNU2007201549420U CN200720154942U CN201130172Y CN 201130172 Y CN201130172 Y CN 201130172Y CN U2007201549420 U CNU2007201549420 U CN U2007201549420U CN 200720154942 U CN200720154942 U CN 200720154942U CN 201130172 Y CN201130172 Y CN 201130172Y
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- CN
- China
- Prior art keywords
- gas
- quantitative
- thermal desorption
- way valve
- gasometry
- 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.)
- Expired - Fee Related
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- 238000003795 desorption Methods 0.000 title abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 21
- 238000005070 sampling Methods 0.000 claims abstract description 13
- 239000012159 carrier gas Substances 0.000 claims abstract description 6
- 238000001228 spectrum Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 238000004817 gas chromatography Methods 0.000 abstract description 3
- 238000004587 chromatography analysis Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 238000013016 damping Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
- 239000002957 persistent organic pollutant Substances 0.000 abstract 1
- 238000011002 quantification Methods 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012470 diluted sample Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000002444 silanisation Methods 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a thermal desorption gas quantitative flow path device, comprising a six-way valve, a quantitative pipe and a gas pipeline; the six channels of the six-way valve are respectively connected with the sample injection port of a sampling tube, the quantitative pipe (two channels), carrier gas, a chromatography sampler and a damping tube through pipelines. The utility model is characterized in that, the gas desorbed in the sampling tube passes through the six-way valve and enters the quantitative pipe; then the quantitative gas enters into the sampler of the gas chromatography. The thermal desorption gas quantitative flow path device has the advantages of accurate quantification results and simple operation; therefore, the thermal desorption gas quantitative flow path device can be widely applied to environmental pollution or other organic pollutant detections in civil construction engineering.
Description
Technical field
The utility model relates to the gas flow path device that the gaseous volatilization thing that heating desorption is gone out is quantitatively transferred to the gas chromatograph sampling system.
Background technology
Along with the raising of people's lives, people more and more pay attention to indoor environmental pollution, to many organic volatiles, all are after organic contaminant is adopted back from the scene during indoor environmental pollution detects, and analyze by the method for thermal desorption heating.The thermal desorption sample injection method of present domestic existence has three kinds, first kind of manual sample injection method of thermal desorption, the method be with the heating desorption in the collection tube with nitrogen dilution in the 100ml syringe, sample introduction 1ml, the manual sample introduction of thermal desorption is to 100 times of post analysis of diluted sample, and this method detects limit for height (low concentration sample can't detect), and requires 60 ℃ of thermal equilibriums, the manual operations uncertain factor is many, and the accuracy of experimental result is low.Second method thermal desorption direct injected, this method are the gas that heating desorption is gone out, and enter into the gas chromatography injector fully, and this method is to be undertaken quantitatively by the time, can not accurately carry out quantitatively entering chromatographic gas.The third is a cold-trap secondary THE METHOD OF THERMAL DESORPTION, and the thermal desorptioner of this method all is import instruments, the cost height, and can not be supporting fully with homemade chromatograph.
Summary of the invention
The utility model can not carry out accurately quantitatively in order to solve existing domestic thermal desorptioner, external thermal desorptioner technical matters such as cost an arm and a leg, and the gas flow path device a kind of economical and practical, simple to operate that provides.
According to above-mentioned purpose, the utility model provides a kind of thermal desorptioner gasometry flow circuit device, be made up of six-way valve, quantity tube and gas piping, 6 passages of six-way valve link to each other with damper tube with sampling pipe, quantity tube (2 passages), carrier gas, chromatic spectrum sample feeder by pipeline respectively.The gas of separating sucking-off in the sampling pipe enters quantity tube by six-way valve, then the gas after quantitative is entered in the injector of gas chromatograph.
The utility model has following advantage and good effect owing to taked above technical measures
1, can the sample that enter in the gas chromatography injector be carried out accurately quantitatively, effectively having solved a conventional thermal desorptioner can only come the quantitatively problem of (can not be accurately quantitative) by sample injection time.
2, adopt hand sampling after the sample concentration, have simple to operate, advantage such as sample introduction good reproducibility, sample size are big.
3, this thermal desorptioner low cost has the prospect that widespread use is promoted.
Description of drawings
Fig. 1 is a sampling flowsheet structural representation of the present utility model
Fig. 2 is a sample introduction flowage structure synoptic diagram of the present utility model
Embodiment
As shown in Figure 1, thermal desorption gasometry flow circuit device is made up of six-way valve 11, quantity tube 15 and damper tube 12.Be evenly distributed with six passages 1,2,3,4,5,6 on the six-way valve valve body 17, and link to each other with damper tube 12 with sampling pipe 7, quantity tube 15 (2 passages), carrier gas device 14, chromatic spectrum sample feeder 16 by stainless steel pipeline 9 respectively.Open switch valve 8 during measurement, changeover valve 10 makes 1 and 6,2 and 3,4 of six passages on the valve body 17 communicate with 5 passages, and then device is in thermal desorption sampling state.At this moment, nitrogen purges sample through sampling pipe 7 from adsorbent, and enters passage 1, the passage 6 of six-way valve 11 through stainless steel pipeline 9, enter quantity tube 15 quantitatively after, admission passage 2, passage 2 pass through damper tube 12 and are connected with Drexel bottle 13.Be filled with the material of the high inertia of silanization, pickling in the damper tube 12.Sample can be carried out quantitatively through quantity tube like this.
As shown in Figure 2, behind thermal desorption sampling operation 10S, changeover valve 10 makes 1 and 2,3 and 4,5 of six passages on the valve body 17 communicate with 6 passages, and then device is in thermal desorption sample introduction state.Carrier gas this moment (N2) is blown the gas admission passage 4 in the quantity tube 15 by carrier gas device 14 admission passages 5,6, is entered in the gas chromatograph injector 16 by passage 4.
Claims (1)
1. thermal desorptioner gasometry flow circuit device, it is characterized in that, form by six-way valve, quantity tube and gas piping, 6 passages of six-way valve link to each other by quantity tube, carrier gas, chromatic spectrum sample feeder and the damper tube of pipeline with sampling pipe, 2 passages respectively, the gas of separating sucking-off in the sampling pipe enters quantity tube by six-way valve, then the gas after quantitative is entered in the injector of gas chromatograph.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201549420U CN201130172Y (en) | 2007-07-19 | 2007-07-19 | Thermal desorption instrument gasometry flow circuit apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201549420U CN201130172Y (en) | 2007-07-19 | 2007-07-19 | Thermal desorption instrument gasometry flow circuit apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201130172Y true CN201130172Y (en) | 2008-10-08 |
Family
ID=40018033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201549420U Expired - Fee Related CN201130172Y (en) | 2007-07-19 | 2007-07-19 | Thermal desorption instrument gasometry flow circuit apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201130172Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017092368A1 (en) * | 2015-12-03 | 2017-06-08 | 朱伯秦 | Gas-phase chromatographic analyzer and gas sampling apparatus |
| CN109030679A (en) * | 2018-07-19 | 2018-12-18 | 浙江赛鹭鑫仪器有限公司 | A kind of second level pyrolysis analysis system |
| CN111610267A (en) * | 2020-05-30 | 2020-09-01 | 中国石油天然气股份有限公司 | Shale oil content and fine component synchronous experimental analysis device |
| CN111610265A (en) * | 2020-05-30 | 2020-09-01 | 中国石油天然气股份有限公司 | Synchronous analysis method for oil content and molecular composition of shale fraction |
-
2007
- 2007-07-19 CN CNU2007201549420U patent/CN201130172Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017092368A1 (en) * | 2015-12-03 | 2017-06-08 | 朱伯秦 | Gas-phase chromatographic analyzer and gas sampling apparatus |
| CN109030679A (en) * | 2018-07-19 | 2018-12-18 | 浙江赛鹭鑫仪器有限公司 | A kind of second level pyrolysis analysis system |
| CN111610267A (en) * | 2020-05-30 | 2020-09-01 | 中国石油天然气股份有限公司 | Shale oil content and fine component synchronous experimental analysis device |
| CN111610265A (en) * | 2020-05-30 | 2020-09-01 | 中国石油天然气股份有限公司 | Synchronous analysis method for oil content and molecular composition of shale fraction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081008 |