The method in HJ38-2017 for total hydrocarbons, methane, and non methane total hydrocarbons involves measuring the content of total hydrocarbons and methane using a total hydrocarbon column and a methane column, respectively, and obtaining the content of non methane total hydrocarbons using a subtraction method.

　　Name: 5A Molecular Sieve Methane Column

　　Specification: 1 meter * 1/8, 60-80 mesh

　　*High operating temperature: 300 ° C

　　Application: Determination of Methane in Environmental Air/Fixed Source Waste Gas

　　Suitable for: Tianrui VOCS online, portable, NMHC online analysis

　　Thoroughly separate oxygen and methane without interference

　　总烃、甲烷、非甲烷总烃hj38-2017中方法是用总烃柱和甲烷柱分别测定总烃和甲烷的含量，差减法得出非甲烷总烃的含量。

　　名称:5A分子筛甲烷柱

　　规格:1米*1/8，60-80Mesh

　　*高使用温度:300°C

　　应用:环境空气/固定污染源废气中甲烷测定

　　适用于:天瑞VOCS在线，便携式，NMHC在线分析

　　氧与甲烷分离彻底，不存在干扰