该方法用于测定氢气或液化石油气（LPG）中的单个微量C5减去碳氢化合物杂质，其中特定微量组分与主要组分（通常为丙烷/丙烯或乙烷/乙烯）充分分离。乙基乙炔洗脱后的组分分组并报告为重组分。每种成分的定量范围为2至3000 mol ppm；然而，当主要成分干扰杂质的分辨率时，定量下限会增加。

This method is for determining individual trace C5 minus hydrocarbon impurities in hydrogen or liquefied petroleum gas (LPG), where the specific trace components are sufficiently resolved from the major components, typically propane/propylene or ethane/ethylene. Components eluting after ethyl acetylene are grouped and reported as heavies. The range of quantitation for each component is 2 to 3000 mol-ppm; however, the lower limit of quantitation increases when major components interfere with the resolution of the impurities.