GB/T 8981-2008 in English

《GB/T 8981-2008气体中微量氢的测定 气相色谱法》由TC206（全国气体标准化技术委员会）归口，主管部门为中国石油和化学工业联合会。
本标准代替ＧＢ／Ｔ８９８１―１９８８《气体中微量氢的测定　气相色谱法》。本标准规定了气体中的微量氢的气相色谱测定方法。本标准适用于氮、氩、氧、空气、氪、氙及灯泡用氩等气体中微量氢的测定，也适用于医学和电力等领域。测定范围为0.02～100×10-6（体积分数）。 本标准与ＧＢ／Ｔ８９８１―１９８８比较，主要差异如下：
―――修改了适用范围（见第１章）；
―――增加了检测限确认（本标准的８．３）。

Scope

This standard specifies the gas chromatographic method for the determination of trace amounts of hydrogen in gases. This standard is applicable to the determination of trace amounts of hydrogen in gases such as nitrogen, argon, oxygen, air, krypton, xenon, and argon for light bulbs, and is also applicable to fields such as medicine and electric power. The measuring range is 0.02～100×10^-6 (volume fraction). When the sample to be tested contains more than 200×10^-6 (volume fraction) of neon or more than 1000×10^-6 (volume fraction) of helium, it will interfere with the determination of hydrogen. At this time, hydrogen, helium and neon need to be separated before this standard can be applied.