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羰基硫和硫化氢，气相色谱仪配备有质谱仪，在选定的离子监测模式下运行。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羰基硫和硫化氢的程序。羰基硫和硫化氢在丙烯尾上洗脱，但通过选定的离子监测，很容易提取为独特的离子。每种成分的定量下限为0.05 mol-ppm。

This method is for determining trace carbonyl sulfide and hydrogen sulfide 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 carbonyl sulfide and hydrogen sulfide. Carbonyl sulfide and hydrogen sulfide elute on the propylene tail but are readily extracted as unique ions with selected ion monitoring. The lower limit of quantitation for each component is 0.05 mol- ppm.