GB/T 31705-2015In situ mesaurement of background atmospheric carbon dioxide and methane concentration by gas chromatographic(GC) system (English PDF)
气相色谱法本底大气二氧化碳和甲烷浓度在线观测方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
June 2, 2015
Implementation date
January 1, 2016
Scope
GB/T 31705-2015 is the English-translated version of 气相色谱法本底大气二氧化碳和甲烷浓度在线观测方法.
GB/T 31705-2015 is the Chinese standard "In situ mesaurement of background atmospheric carbon dioxide and methane concentration by gas chromatographic(GC) system".
Its scope clause reads: This standard specifies the background concentration of atmospheric carbon dioxide and methane gas chromatography-line methods of observation, including the observation environment, observing systems group Cheng, performance requirements, observing the process and system maintenance.
This standard applies to gas chromatography-line observation of the background atmospheric concentrations of carbon dioxide and methane. Its clauses include terms and definitions.
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Document preview — GB/T 31705-2015
National Standard of the People's Republic of China
- ICS
- 07.060
- Classification
- A 47
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 3.1 GC gaschromatography
- 3.2 Hydrogen flame ionization detector
- 3.3 Background atmosphere
- 3.4 Online observation insitumeasurement
- 3.5 Nickel catalyst
1 Scope
This standard specifies the background concentration of atmospheric carbon dioxide and methane gas chromatography-line methods of observation, including the observation environment, observing systems group
Cheng, performance requirements, observing the process and system maintenance.
This standard applies to gas chromatography-line observation of the background atmospheric concentrations of carbon dioxide and methane.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 4946-2008 term gas chromatography
QX/T 125-2011 GHG floor observation term
3 Terms and Definitions
GB/T 4946-2008, QX/T 125-2011 defined by the following terms and definitions apply to this document.
3.1 GC gaschromatography
As the mobile phase gas chromatography, which uses the phase difference between the material and the stationary phase partition coefficient in the flow, when the two-phase relative transport
When moving, the sample components between two phases repeated allocation, distribution coefficients of the components even if only small differences, as the mobile phase (gas
Moving body) may also have the distance, the last component of the sample to obtain separation and determination.
[GB/T 4946-2008, Definition 2.1]
3.2 Hydrogen flame ionization detector
When generating ions in a hydrogen flame combustion of organic matter, the device generates an electrical signal in the electric field.
[GB/T 4946-2008, the definition 3.6.4.2]
3.3 Background atmosphere
Away from local sources, not directly affect the local environment, the basic mix of atmosphere.
[QX/T 125-2011, the definition 3.3]
3.4 Online observation insitumeasurement
In the target location on the target was subjected to direct measurement.
3.5 Nickel catalyst
A nickel catalyst, and hydrogen at elevated temperature conditions, can carbon dioxide, carbon monoxide and other ingredients into methane.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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