KS I ISO 6974-3-2006(2016) 天然气用气相色谱法测定具有规定不确定度的组分第3部分:用两个填充柱测定氢、氦、氧、氮、二氧化碳和C8以下的碳氢化合物
Natural gas-Determination of composition with defined uncertainty by gas chromatography-Part 3:Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and hydrocarbons up to C8 using two p