非甲烷總烴(non-methane total hydrocarbons,NMHCs)作為揮發性有機物(volatile organic compounds,VOCs)的重要組成部分,具有強烈的光化學活性,在一定程度上可以反映城市環境空氣VOCs的總體污染情況。
浩瀚色譜對非甲烷總烴(NMHC)在線監測系統的工作原理,系統組成.該系統采用GC-FID技術,使用一個氫火焰離子化檢測器(FID)可以同時測定樣品氣體中的總烴和甲烷兩種成分.通過對現場樣品的分析以及系統重復性驗證,得出總烴的相對標準偏差(RSD)為0.291%,甲烷為0.584%,NMHC為0.124%,從而證明NMHC在線監測系統的穩定性好,檢測方法重復性好,數據準確,分析速度快,可以連續監測污染源氣體中非甲烷總烴的實時含量,從而可對污染源中VOCs的排放進行有效監管.
名稱：甲烷柱
規格：1.5m*1/8
應用：固定污染源廢氣/環境空氣中總烴，甲烷，非甲烷總烴的測定 氣相色譜法
氧不干擾，柱效高，分離好，柱溫可達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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