该方法用于使用气相色谱仪测定高纯度聚合物级乙烯和丙烯气体或液体中的痕量砷化氢和磷化氢，该气相色谱仪配备有在选定离子监测模式下运行的质谱仪。特定仪器经过预配置，能够测定聚合物级乙烯或丙烯中的典型杂质，但该方法仅概述了测定砷化氢和磷化氢的程序。砷化氢和磷化氢很容易通过选择性离子监测提取为独特的离子。砷化氢和磷化氢的定量下限分别为0.02 mol ppm和0.20 mol ppm。

This method is for determining trace arsine and phosphine in high purity polymer grade ethylene and propylene gas or liquid using a gas chromatograph equipped with a mass spectrometer run in selected ion monitoring mode. The specific instrument is preconfigured and is capable of determining typical impurities in polymer grade ethylene or propylene, however this method only outlines the procedure for determining arsine and phosphine. Arsine and phosphine are readily extracted as unique ions with selected ion monitoring. The lower limit of quantitation for arsine and phosphine is 0.02 mol-ppm and 0.20 mol-ppm respectively.