GDX-502 气相色谱法测定环境空气中非甲烷总烃

固定相：高分子小球

GDX-502，2m*3mm，2m*4mm，2m*1/8，60-80目

甲烷柱

总烃柱

2m*3mm，2m*4mm，2m*1/8，硅烷化玻璃微球

非甲烷总烃（non methane total hydrocarbon，缩写NMHC）是存在于环境空气中除甲烷之外的所有碳氢化合物的总称。大气中的非甲烷总烃超过一定浓度，除直接对人体健康有害外，在一定条件下经日光照射还能产生光化学烟雾，对环境和人类造成危害。
滕州市浩瀚色谱仪器技术服务有限公司，用双柱双氢火焰离子化检测器气相色谱法测定环境空气中非甲烷总烃。方法的检出限:总烃为0.02mg/m3,甲烷为0.02 mg/m3,非甲烷总烃为0.02 mg/m3。变异系数:总烃为0.65%,甲烷为0.55%,非甲烷总烃为3.06%。加标回收率:总烃为101.2%~102.7%,甲烷为100.7%~101.8%。该方法可行性良好,适用于环境空气中非甲烷总烃的测定。

气相色谱法测定环境空气中非甲烷总烃 图片：



Determination of non-methane total hydrocarbons in ambient air by gas chromatography
Determination of non-methane total hydrocarbons in ambient air by gas chromatography

Stationary phase: polymer pellet
GDX-502, 2m*3mm, 2m*4mm, 2m*1/8, 60-80 mesh
Methane column

Total hydrocarbon column
2m*3mm, 2m*4mm, 2m*1/8, silanized glass microspheres

Non methane total hydrocarbon (NMHC) is a general term for all hydrocarbons other than methane present in ambient air. The total non-methane hydrocarbons in the atmosphere exceed a certain concentration. In addition to being directly harmful to human health, under certain conditions, photochemical smog can also be generated by sunlight, causing harm to the environment and humans.
Tengzhou Haohao Chromatography Instrument Technology Service Co., Ltd. uses a two-column double hydrogen flame ionization detector for gas chromatography to determine non-methane total hydrocarbons in ambient air. The detection limits of the method were: total hydrocarbons were 0.02 mg/m3, methane was 0.02 mg/m3, and non-methane total hydrocarbons were 0.02 mg/m3. Coefficient of variation: total hydrocarbons were 0.65%, methane was 0.55%, and non-methane total hydrocarbons were 3.06%. The recoveries were increased by 101.2%~102.7% for total hydrocarbons and 100.7%~101.8% for methane. The method is feasible and suitable for the determination of non-methane total hydrocarbons in ambient air.

Determination of non-methane total hydrocarbons in ambient air by gas chromatography