標準號：ISO 6975-1997
中文標準名稱：天然氣 延伸分析 氣相色譜法
英文標準名稱：Natural gas - Extended analysis - Gas-chromatographic method
標準類型：E24
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：E24
國際標準分類號：75.060
適用范圍：This International Standard describes the specifications for the quantitative analysis of the following components of natural gas: helium hydrogen argon oxygen nitrogen carbon dioxide saturated hydrocarbons from C1 to C5 hydrocarbon fractions from C6 upwards aromatic compounds as benzene and toluene The gas-chromatographic methods determine the components in the following ranges: oxygen: 0,001 % (n/n) to 0,5 % (n/n) helium: 0,001 % (n/n) to 0,5 % (n/n) hydrogen: 0,001 % (n/n) to 0,5 % (n/n) argon: 0,001 % (n/n) to 0,5 % (n/n) nitrogen: 0,001 % (n/n) to 40 % (n/n) carbon dioxide 0,001 % (n/n) to 40 % (n/n) methane: 50 % (n/n) to 100 % (n/n) ethane: 0,02 % (n/n) to 15 % (n/n) propane: 0,001 % (n/n) to 5 % (n/n) higher hydrocarbons: The method can measure hydrocarbon components from 10