標準號：DIN EN ISO 6975-2005
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 (ISO 6975:1997); English version of DIN EN ISO 6975
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
引用標準：ISO 5725-1-1994;ISO 6142-1981;ISO 6143-1981;ISO 6326-1-1989;ISO 6326-2-1981;ISO 6326-3-1989;ISO 6326-4-1994;ISO 6326-5-1989;ISO 6570-1-1983;ISO 6974-1;ISO 6974-2;ISO 6974-3;ISO 6974-4;ISO 6974-5;ISO 10715-1997;ISO 14111-1997
適用范圍：This International Standard describes the specifications for the quantitative analysis of the following components ofnatural gas: helium hydrogen argon oxygen nitrogen carbon dioxide saturated hydrocarbons from C~ to Cs hydrocarbon fractions from C6 upwards aromatic compounds as benzene and tolueneThe 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 10.6 (n/n) up to their maximum concentration, which is compatible with the requirement that the gas is free from hydrocarbon condensate at any pressure in the range 1 x 102 kPa to 7 x 103 kPa.