为了解决固定污染源非甲烷总烃（NMHC）在线监测系统比对中，在实验室中气相色谱（GC）法检测样品结果偏低的问题，浩瀚色谱选取便携式分析仪和GC仪进行实验对比，从载气选择、标准参考气体、储存时间和样品前处理等方面，分析对NMHC检测的影响，以提高实验室测试结果的准确性。

　　编号:20231103001

　　名称:非甲烷总烃复合柱

　　规格:1.2m*1/8，60-80目

　　*高使用温度:240°C

　　应用:1根色谱柱直接测定非甲烷总烃，无需差减法，效率高

　　实例:

　　1.固定污染源废气中总烃，甲烷，非甲烷总烃的测定

　　2.环境空气中非甲烷总烃测定

　　In order to solve the problem of low sample detection results using gas chromatography (GC) in the laboratory during the online monitoring system comparison of non methane total hydrocarbons (NMHC) from fixed pollution sources, Haohan Chromatography selected a portable analyzer and a GC instrument for experimental comparison, analyzing the impact on NMHC detection from aspects such as carrier gas selection, standard reference gas, storage time, and sample pretreatment, in order to improve the accuracy of laboratory test results.

　　No.: 20231103001

　　Name: Non methane total hydrocarbon composite column

　　Specification: 1.2m * 1/8, 60-80 mesh

　　*High operating temperature: 240 ° C

　　Application: Direct determination of non methane total hydrocarbons using one chromatographic column, without the need for subtraction, with high efficiency

　　Example:

　　1. Determination of total hydrocarbons, methane, and non methane total hydrocarbons in fixed pollution source exhaust gas

　　2. Determination of non methane total hydrocarbons in ambient air