GB/T 27894.3-2011
天然气.在一定不确定度下用气相色谱法测定组分第3部分:用两根填充柱测定氢、氦、氧、氮、二氧化碳和直至C8的烃类
Natrual gas.Determination of composition with defined uncertainty by gas chromatography.Part 3:Determination of hydrogen,helium,oxyen,nitrogen,carbon dioxide and hydrocarbons up to C using two packed columns
GBT27894.3-2011, GB27894.3-2011