CN106525951A - Device and method for detecting methane content in gas - Google Patents
Device and method for detecting methane content in gas Download PDFInfo
- Publication number
- CN106525951A CN106525951A CN201610875084.2A CN201610875084A CN106525951A CN 106525951 A CN106525951 A CN 106525951A CN 201610875084 A CN201610875084 A CN 201610875084A CN 106525951 A CN106525951 A CN 106525951A
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- quantitative
- way valve
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title abstract description 6
- 238000005070 sampling Methods 0.000 claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 92
- 238000012360 testing method Methods 0.000 claims description 55
- 239000012159 carrier gas Substances 0.000 claims description 46
- 230000006698 induction Effects 0.000 claims description 31
- 239000004215 Carbon black (E152) Substances 0.000 claims description 8
- 229930195733 hydrocarbon Natural products 0.000 claims description 8
- 150000002430 hydrocarbons Chemical class 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 5
- 239000011800 void material Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 206010003497 Asphyxia Diseases 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 206010057315 Daydreaming Diseases 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
Classifications
-
- 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
- G01N27/626—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 heat to ionise a gas
-
- 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
- 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
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Immunology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Toxicology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The invention relates to the field of gas component detection, in particular to the field of gas methane content detection and provides a device for detecting methane content in gas and a methane content detecting method applying the detecting device. The methane content detecting device comprises a multi-way valve, quantitative rings, a gas sampling system, a gas carrying and delivery system, a gas control system and a detector, wherein the quantitative rings include the first quantitative ring and the second quantitative ring, and the detector comprises a flame ionization detector and a light ionization detector. By the adoption of the technical scheme, rapid detection of the methane content in gas can be achieved without a chromatographic column, and the online gas component detecting efficiency is greatly improved.
Description
Technical field
The present invention relates to field of gas detection, more particularly, it relates to methane content testing equipment and inspection in a kind of gas
Survey method.
Background technology
Methane is a kind of greenhouse gases, and for unit formula number, the greenhouse effect of methane is bigger than carbon dioxide 25 times.
Although methane is substantially nontoxic to people, during excessive concentration, in making air, oxygen content is substantially reduced, and makes one asphyxia, when in air
When methane reaches 25%-30%, can cause headache, it is dizzy, weak, absent minded, situations such as breathe and palpitate quickly.If too late
When away from death by suffocation can be caused.
In view of in air methane a variety of harm, to the polluter that produces methane, to carry out on-line monitoring just very necessary.
The content of the invention
The present invention is in order to solve above-mentioned technical problem, there is provided methane content testing equipment in a kind of gas, can solve the problem that
The problem that methane content detection is present in existing gas.
Corresponding to this, another technical problem to be solved of the invention is to provide a kind of using methane content inspection in the gas
The detection method of measurement equipment.
For methane content testing equipment in gas, the testing equipment for solving the technical problem of the invention includes many
Port valve, quantitative loop, gas sampling system, carrier gas induction system, gas control system and detector；Characterized in that, described
Quantitative loop includes the first quantitative loop and the second quantitative loop, and the detector includes flame ionization detector and photoionization inspection
Survey device；
There is the multiple-way valve gas sampling system connector, first the first connector of quantitative loop, the first quantitative loop second to connect
Mouth, second the first connector of quantitative loop, second the second connector of quantitative loop, the first connector of carrier gas induction system, carrier gas conveying
The second connector of device, flame ionization detector connector, photoionization detector connector and air pump connector；Institute
State first the first connector of quantitative loop, the first quantitative loop, first the second connector of quantitative loop to be sequentially connected；Second quantitative loop
First connector, the second quantitative loop, second the second connector of quantitative loop are sequentially connected；
The multiple-way valve has load condition position and sample introduction mode bit, and when multiple-way valve is located at load condition position, the gas is adopted
Sample system connector, first the first connector of quantitative loop, the first quantitative loop, first the second connector of quantitative loop, the second quantitative loop
First connector, the second quantitative loop, second the second connector of quantitative loop, air pump connector are sequentially communicated, it is ensured that sample gas is gathered
To the first quantitative loop and the second quantitative loop；When the multiple-way valve is located at sample introduction mode bit, the first connector of carrier gas induction system,
First the first connector of quantitative loop, the first quantitative loop, first the second connector of quantitative loop, flame ionization detector connector according to
Secondary connection, the second connector of carrier gas induction system, second the first connector of quantitative loop, the second quantitative loop, the second quantitative loop second
Connector, photoionization detector connector are sequentially communicated.
Used as the improvement of the present invention, gas sampling system includes air pump, two-position three-way valve and manograph.
Used as the improvement of the present invention, multiple-way valve is to adopt ten-way valve, it would however also be possible to employ two groups of six-way valves.
Used as the improvement of the present invention, gas control system includes electronic pressure controller, void column and vapour lock.
Used as the improvement of the present invention, carrier gas induction system includes a three way cock.
As photoionization detector does not have any response to methane, so optical ionic detector can quickly measure gas
NMHC content in body.
For methane content detection method in gas, the present invention solves the method for above-mentioned technical problem includes following step
Suddenly：
（1）The multiple-way valve is set to into load condition position, under test gas enter multiple-way valve by gas sampling system, pass sequentially through
Gas sampling system connector, first the first connector of quantitative loop, the first quantitative loop, first the second connector of quantitative loop, second
The first connector of quantitative loop, the second quantitative loop, second the second connector of quantitative loop, it is ensured that under test gas are gathered to the first quantitative loop
With the second quantitative loop；
（2）The multiple-way valve is set to into sample introduction mode bit, under test gas are loaded into detector by carrier gas, specially：Carrier gas passes through
Carrier gas induction system enters multiple-way valve, and first via carrier gas passes sequentially through the first connector of carrier gas induction system, the first quantitative loop
One connector, the first quantitative loop, first the second connector of quantitative loop, flame ionization detector connector enter flame ion
Detector；Second road-load gas passes sequentially through the second connector of carrier gas induction system, second the first connector of quantitative loop, second quantitative
Ring, second the second connector of quantitative loop, photoionization detector connector enter photoionization detector；
（3）Total hydrocarbon content of the flame ionization detector measurement into the under test gas of flame ionization detector, photoionization
Detectors measure enters the NMHC content of the under test gas of photoionization detector；
（4）Total hydrocarbon content under test gas is deducted into NMHC content under test gas, methane contains in obtaining under test gas
Amount.
NMHC testing equipment in the present invention can be realized in the case where chromatographic column is not used, be realized to gas
The quick detection of middle methane content, substantially increases the efficiency of on-line checking.
Description of the drawings
Fig. 1 is the schematic diagram of the first embodiment of methane content testing equipment in gas of the present invention；
Fig. 2 is ten-way valve connector schematic diagram in the first embodiment of methane content testing equipment in gas of the present invention；
Fig. 3 is the schematic diagram of methane content second embodiment of testing equipment in gas of the present invention；
Fig. 4 is two groups of six-way valve connector schematic diagrams in second embodiment of methane content testing equipment in gas of the present invention.
Specific embodiment
In order that those skilled in the art more fully understands technical scheme, it is below in conjunction with the accompanying drawings and concrete real
The present invention is described in further detail to apply example.
Fig. 1 and Fig. 2 illustrate the structure of the first embodiment of methane content testing equipment in gas of the present invention.Such as Fig. 1
And shown in Fig. 2, in gas, methane content testing equipment includes ten-way valve 3, quantitative loop, gas sampling system 1, carrier gas induction system
14th, gas control system and detector, the quantitative loop include the first quantitative loop 2 and the second quantitative loop 8, the detector bag
Include flame ionization detector 6 and photoionization detector 7.
Ten-way valve has gas sampling system connector 001, first quantitative loop the first connector 002, the first quantitative loop
Two connectors 005, second quantitative loop the first connector 006, second the second connector of quantitative loop 009, carrier gas induction system first
Connector 003, the second connector of carrier gas conveyer device 007, flame ionization detector connector 004, photoionization detector
Connector 008 and air pump connector 010；First quantitative loop, first connector 002, the first quantitative loop 2, first are quantitative
The second connector of ring 005 is sequentially connected；Second quantitative loop, first connector 006, the second quantitative loop 8, the second quantitative loop
Two connectors 009 are sequentially connected；
The ten-way valve has load condition position and sample introduction mode bit, and when multiple-way valve is located at load condition position, the gas is adopted
Sample system connector 001, first quantitative loop the first connector 002, the first quantitative loop 2, first the second connector of quantitative loop 005,
Second quantitative loop the first connector 006, the second quantitative loop 8, second the second connector of quantitative loop 009, air pump connector 010 according to
Secondary connection, it is ensured that sample gas is gathered to the first quantitative loop 2 and the second quantitative loop 8；When the ten-way valve is located at sample introduction mode bit, carry
Gas induction system the first connector 001, first quantitative loop the first connector 002, the first quantitative loop 2, the first quantitative loop second connect
Interface 005, flame ionization detector connector 004 are sequentially communicated, and the second connector of carrier gas induction system 007, second is quantitative
Ring the first connector 006, the second quantitative loop 8, second the second connector of quantitative loop 009, photoionization detector connector 008 according to
Secondary connection.
Gas sampling system 1 also includes air pump 9, two-position three-way valve 10 and manograph 11.Gas control system
Including electronic pressure controller 12, void column 4 and vapour lock 5.Carrier gas induction system 14 includes a three way cock 13.
Method using the testing equipment detection methane content described in embodiment one is as follows：
（1）The ten-way valve is set to into load condition position, under test gas enter ten-way valve by gas sampling system, pass sequentially through
Gas sampling system connector, first the first connector of quantitative loop, the first quantitative loop, first the second connector of quantitative loop, second
The first connector of quantitative loop, the second quantitative loop, second the second connector of quantitative loop, it is ensured that under test gas are gathered to the first quantitative loop
With the second quantitative loop；
（2）The ten-way valve is set to into sample introduction mode bit, under test gas are loaded into detector by carrier gas, specially：Carrier gas passes through
Carrier gas induction system enters ten-way valve, and first via carrier gas passes sequentially through the first connector of carrier gas induction system, the first quantitative loop
One connector, the first quantitative loop, first the second connector of quantitative loop, flame ionization detector connector enter flame ion
Detector；Second road-load gas passes sequentially through the second connector of carrier gas induction system, second the first connector of quantitative loop, second quantitative
Ring, second the second connector of quantitative loop, photoionization detector connector enter photoionization detector；
（3）Total hydrocarbon content of the flame ionization detector measurement into the under test gas of flame ionization detector, photoionization
Detectors measure enters the NMHC content of the under test gas of photoionization detector；
（4）Total hydrocarbon content under test gas is deducted into NMHC content under test gas, methane contains in obtaining under test gas
Amount.
Fig. 3 and Fig. 4 illustrate the structure of methane content second embodiment of testing equipment in gas of the present invention.Such as Fig. 3
And shown in Fig. 4, NMHC testing equipment includes two six-way valves（15、16）, quantitative loop, gas sampling system 1, carrier gas it is defeated
System 14, gas control system and detector, the quantitative loop is sent to include the first quantitative loop 2 and the second quantitative loop 8, the inspection
Surveying device includes flame ionization detector 6 and photoionization detector 7.
Six-way valve 15 has gas sampling system connector 101, first quantitative loop the first connector 102, the first quantitative loop
Second connector 105, the first connector of carrier gas induction system 103, flame ionization detector connector 104.
Six-way valve 16 has second the first connector of quantitative loop 202, the second connector of carrier gas conveyer device 204, second fixed
Amount ring the second connector 205, photoionization detector connector 203 and air pump connector 206.
First quantitative loop, first connector 102, the first quantitative loop 2, first the second connector of quantitative loop 105 connect successively
Connect；Second quantitative loop, first connector 202, the second quantitative loop 8, second the second connector of quantitative loop 204 are sequentially connected.
The six-way valve has load condition position and sample introduction mode bit, when multiple-way valve is located at load condition position, the gas
Sampler body system connector 101, first quantitative loop the first connector 102, the first quantitative loop 2, first the second connector of quantitative loop
105th, second quantitative loop the first connector 202, the second quantitative loop 8, second the second connector of quantitative loop 204, air pump connector
206 are sequentially communicated, it is ensured that sample gas is gathered to the first quantitative loop 2 and the second quantitative loop 8；When the six-way valve is located at sample introduction mode bit
When, carrier gas induction system first connect 103 mouthfuls, first quantitative loop the first connector 102, the first quantitative loop 2, the first quantitative loop the
Two connectors 105, flame ionization detector connector 104 are sequentially communicated, the second connector of carrier gas induction system 204, second
Quantitative loop the first connector 202, the second quantitative loop 8, second the second connector of quantitative loop 204, photoionization detector connector
203 are sequentially communicated.
Gas sampling system 1 also includes air pump 9, two-position three-way valve 10 and manograph 11.Gas control system
Including electronic pressure controller 12, void column 4 and vapour lock 5.Carrier gas induction system 14 includes a three way cock 13.
Method using the testing equipment detection methane content described in embodiment two is as follows：
（1）The six-way valve is set to into load condition position, under test gas enter six-way valve by gas sampling system, pass sequentially through
Gas sampling system connector, first the first connector of quantitative loop, the first quantitative loop, first the second connector of quantitative loop, second
The first connector of quantitative loop, the second quantitative loop, second the second connector of quantitative loop, it is ensured that under test gas are gathered to the first quantitative loop
With the second quantitative loop；
（2）The six-way valve is set to into sample introduction mode bit, under test gas are loaded into detector by carrier gas, specially：Carrier gas passes through
Carrier gas induction system enters six-way valve, and first via carrier gas passes sequentially through the first connector of carrier gas induction system, the first quantitative loop
One connector, the first quantitative loop, first the second connector of quantitative loop, flame ionization detector connector enter flame ion
Detector；Second road-load gas passes sequentially through the second connector of carrier gas induction system, second the first connector of quantitative loop, second quantitative
Ring, second the second connector of quantitative loop, photoionization detector connector enter photoionization detector；
（3）Total hydrocarbon content of the flame ionization detector measurement into the under test gas of flame ionization detector, photoionization
Detectors measure enters the NMHC content of the under test gas of photoionization detector；
（4）Total hydrocarbon content under test gas is deducted into NMHC content under test gas, methane contains in obtaining under test gas
Amount.
Both examples above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred implementation
Limitation of the present invention is not construed as, protection scope of the present invention should be defined by claim limited range.For this
For the those of ordinary skill of technical field, without departing from the spirit and scope of the present invention, can also make it is some improvement and
Retouching, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (7)
1. methane content testing equipment in a kind of gas, it is characterised in that including multiple-way valve, quantitative loop, gas sampling system, load
Gas induction system, gas control system and detector；Characterized in that, the quantitative loop includes that the first quantitative loop and second is determined
Amount ring, the detector include flame ionization detector and photoionization detector；
There is the multiple-way valve gas sampling system connector, first the first connector of quantitative loop, the first quantitative loop second to connect
Mouth, second the first connector of quantitative loop, second the second connector of quantitative loop, the first connector of carrier gas induction system, carrier gas conveying
The second connector of system, flame ionization detector connector, photoionization detector connector and air pump connector；Institute
State first the first connector of quantitative loop, the first quantitative loop, first the second connector of quantitative loop to be sequentially connected；Second quantitative loop
First connector, the second quantitative loop, second the second connector of quantitative loop are sequentially connected；
The multiple-way valve has load condition position and sample introduction mode bit, and when multiple-way valve is located at load condition position, the gas is adopted
Sample system connector, first the first connector of quantitative loop, the first quantitative loop, first the second connector of quantitative loop, the second quantitative loop
First connector, the second quantitative loop, second the second connector of quantitative loop, air pump connector are sequentially communicated, it is ensured that sample gas is gathered
To the first quantitative loop and the second quantitative loop；When the multiple-way valve is located at sample introduction mode bit, the first connector of carrier gas induction system,
First the first connector of quantitative loop, the first quantitative loop, first the second connector of quantitative loop, flame ionization detector connector according to
Secondary connection, the second connector of carrier gas induction system, second the first connector of quantitative loop, the second quantitative loop, the second quantitative loop second
Connector, photoionization detector connector are sequentially communicated.
2. testing equipment according to claim 1, it is characterised in that the gas sampling system include air pump, two
Three-way valve and manograph.
3. testing equipment according to claim 1, it is characterised in that the gas control system includes electron pressure control
Device, void column and vapour lock.
4. testing equipment according to claim 1, it is characterised in that the multiple-way valve is ten-way valve.
5. testing equipment according to claim 1, it is characterised in that the multiple-way valve is two groups of six-way valves.
6. testing equipment according to claim 1, it is characterised in that the carrier gas induction system includes that three connects
Head.
7. the methane content detection method of the testing equipment described in a kind of any one of application claim 1 to 6, it is characterised in that
Comprise the following steps：
（1）The multiple-way valve is set to into load condition position, under test gas enter multiple-way valve by gas sampling system, pass sequentially through
Gas sampling system connector, first the first connector of quantitative loop, the first quantitative loop, first the second connector of quantitative loop, second
The first connector of quantitative loop, the second quantitative loop, second the second connector of quantitative loop, it is ensured that under test gas are gathered to the first quantitative loop
With the second quantitative loop；
（2）The multiple-way valve is set to into sample introduction mode bit, under test gas are loaded into detector by carrier gas, specially：Carrier gas passes through
Carrier gas induction system enters multiple-way valve, and first via carrier gas passes sequentially through the first connector of carrier gas induction system, the first quantitative loop
One connector, the first quantitative loop, first the second connector of quantitative loop, flame ionization detector connector enter flame ion
Detector；Second road-load gas passes sequentially through the second connector of carrier gas induction system, second the first connector of quantitative loop, second quantitative
Ring, second the second connector of quantitative loop, photoionization detector connector enter photoionization detector；
（3）Total hydrocarbon content of the flame ionization detector measurement into the under test gas of flame ionization detector, photoionization
Detectors measure enters the NMHC content of the under test gas of photoionization detector；
（4）Total hydrocarbon content under test gas is deducted into NMHC content under test gas, methane contains in obtaining under test gas
Amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610875084.2A CN106525951A (en) | 2016-10-08 | 2016-10-08 | Device and method for detecting methane content in gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610875084.2A CN106525951A (en) | 2016-10-08 | 2016-10-08 | Device and method for detecting methane content in gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106525951A true CN106525951A (en) | 2017-03-22 |
Family
ID=58332985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610875084.2A Pending CN106525951A (en) | 2016-10-08 | 2016-10-08 | Device and method for detecting methane content in gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN106525951A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678062A (en) * | 2015-03-03 | 2015-06-03 | 重庆创图环境检测有限公司 | VOC (volatile organic compound) gas and non-methane total hydrocarbon gas sampling and detecting system |
| CN105510478A (en) * | 2015-12-30 | 2016-04-20 | 聚光科技(杭州)股份有限公司 | Online detection device and method of non-methane total hydrocarbon |
| CN105717065A (en) * | 2016-04-07 | 2016-06-29 | 南京波腾科技工程有限公司 | Continuous monitoring device for non-methane total hydrocarbon and working method of continuous monitoring device |
-
2016
- 2016-10-08 CN CN201610875084.2A patent/CN106525951A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678062A (en) * | 2015-03-03 | 2015-06-03 | 重庆创图环境检测有限公司 | VOC (volatile organic compound) gas and non-methane total hydrocarbon gas sampling and detecting system |
| CN105510478A (en) * | 2015-12-30 | 2016-04-20 | 聚光科技(杭州)股份有限公司 | Online detection device and method of non-methane total hydrocarbon |
| CN105717065A (en) * | 2016-04-07 | 2016-06-29 | 南京波腾科技工程有限公司 | Continuous monitoring device for non-methane total hydrocarbon and working method of continuous monitoring device |
Non-Patent Citations (1)
| Title |
|---|
| 吴伟鹏等: "光离子化检测器检测非甲烷烃的研究", 《中国环境科学年华学术年会论文集》 * |
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