NS-EN ISO 6974-3:2001 天然气 用气相色谱法测定具有确定不确定度的成分 第3部分:使用两个填充柱测定氢、氦、氧、氮、二氧化碳和最高 C8 的碳氢化合物 (ISO 6974-3:2000)
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 packed columns (ISO 6974-3:2000)