Standard No.:	GB/T 27894.3-2011
English Name:	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 C8 using two packed columns
Chinese Name:	天然气 在一定不确定度下用气相色谱法测定组成 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
Chinese Classification:	E24    Natural gas
Professional Classification:	GB    National Standard
Issued by:	AQSIQ; SAC
Issued on:	2011-12-30
Implemented on:	2012-6-1
Status:	superseded
Superseded by:	GB/T 27894.3-2023 Natural gas―Determination of composition and associated uncertainty by gas chromatography―Part 3:Precision and bias
Superseded on:	2023-7-1
Language:	English
File Format:	PDF
Word Count:	8000 words
Price(USD):	220.0
Delivery:	via email in 1~3 business day

本部分给出了用两根填充柱定量测定天然气中He、H2、O2、N2、CO2和C1至C8烃类的气相色谱法。该方法适用于实验室和在线分析检测，可分析组分摩尔分数在表1范围内的气体，但不能含有液态烃。该范围并不代表检测限，而是本方法所规定的精密度的限制范围。即使样品中可能有一个或更多组分不存在，该方法仍可适用。