ISO 6974-5:2000 天然气 用气相色谱法测定规定的不确定度的组分 第5部分:用三柱测定实验室和在线处理用的氮、二氧化碳和碳1至碳5和碳6+的烃类
Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 5: Determination of nitrogen, carbon dioxide and C1 to C5 and C6+ hydrocarbons for a laboratory and on-line process application usi