气相色谱法测定非甲烷总烃的探讨

摘要

Direct injection dispersion method was for determining the content of NMHC. It was determined by GC which has double column and single hydrogen flame ionization detector. Method detection limit was 0.015 mg/m3; RSD was between 0.9%~3.2%. Standard addition recovery was between 95.4%~101.7%. The method was simple operation and could quantify accurately. The results was conform to the experimental requirements.%采用带有双柱单氢焰离子化检测器的气相色谱仪，直接进样差量法测定非甲烷总烃的含量。方法检出限为0.015mg/m3；RSD在0.9%~3.2%之间；加标回收率为95.4%~101.7%。该方法操作简单，定量准确，结果符合实验要求。