非甲烷总烃(non-methane total hydrocarbons,NMHCs)作为挥发性有机物(volatile organic compounds,VOCs)的重要组成部分,具有强烈的光化学活性,在一定程度上可以反映城市环境空气VOCs的总体污染情况。
浩瀚色谱对非甲烷总烃(NMHC)在线监测系统的工作原理,系统组成.该系统采用GC-FID技术,使用一个氢火焰离子化检测器(FID)可以同时测定样品气体中的总烃和甲烷两种成分.通过对现场样品的分析以及系统重复性验证,得出总烃的相对标准偏差(RSD)为0.291%,甲烷为0.584%,NMHC为0.124%,从而证明NMHC在线监测系统的稳定性好,检测方法重复性好,数据准确,分析速度快,可以连续监测污染源气体中非甲烷总烃的实时含量,从而可对污染源中VOCs的排放进行有效监管.
名称：甲烷柱
规格：1.5m*1/8
应用：固定污染源废气/环境空气中总烃，甲烷，非甲烷总烃的测定 气相色谱法
氧不干扰，柱效高，分离好，柱温可达100度甚至120度
Non methane total hydrocarbons (NMHCs), as an important component of volatile organic compounds (VOCs), have strong photochemical activity and can reflect the overall pollution of VOCs in urban air to a certain extent.
The working principle and system composition of the online monitoring system for non methane total hydrocarbons (NMHC) by Haohan Chromatography. The system adopts GC-FID technology and uses a hydrogen flame ionization detector (FID) to simultaneously determine the total hydrocarbons and methane components in the sample gas. Through analysis of on-site samples and system repeatability verification, the relative standard deviation (RSD) of total hydrocarbons is 0.291%, methane is 0.584%, and NMHC is 0.124%, which proves the stability of the NMHC online monitoring system, the repeatability of the detection method is good, the data is accurate, and the analysis speed is fast. It can continuously monitor the real-time content of non methane total hydrocarbons in the pollution source gas, and thus can monitor the VOCs in the pollution source gas. Effective regulation of Cs emissions
Name: Methane column
Specification: 1.5m * 1/8
Application: Determination of total hydrocarbons, methane, and non methane total hydrocarbons in fixed pollution source exhaust gas/ambient air by gas chromatography
Oxygen does not interfere, column efficiency is high, separation is good, and column temperature can reach 100 ° C or even 120 ° C
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