非甲烷總烴(non-methane total hydrocarbons,NMHCs)作為揮發(fā)性有機(jī)物(volatile organic compounds,VOCs)的重要組成部分,具有強(qiáng)烈的光化學(xué)活性,在一定程度上可以反映城市環(huán)境空氣VOCs的總體污染情況。
浩瀚色譜對(duì)非甲烷總烴(NMHC)在線監(jiān)測(cè)系統(tǒng)的工作原理,系統(tǒng)組成.該系統(tǒng)采用GC-FID技術(shù),使用一個(gè)氫火焰離子化檢測(cè)器(FID)可以同時(shí)測(cè)定樣品氣體中的總烴和甲烷兩種成分.通過(guò)對(duì)現(xiàn)場(chǎng)樣品的分析以及系統(tǒng)重復(fù)性驗(yàn)證,得出總烴的相對(duì)標(biāo)準(zhǔn)偏差(RSD)為0.291%,甲烷為0.584%,NMHC為0.124%,從而證明NMHC在線監(jiān)測(cè)系統(tǒng)的穩(wěn)定性好,檢測(cè)方法重復(fù)性好,數(shù)據(jù)準(zhǔn)確,分析速度快,可以連續(xù)監(jiān)測(cè)污染源氣體中非甲烷總烴的實(shí)時(shí)含量,從而可對(duì)污染源中VOCs的排放進(jìn)行有效監(jiān)管.
名稱：甲烷柱
規(guī)格：1.5m*1/8
應(yīng)用：固定污染源廢氣/環(huán)境空氣中總烴，甲烷，非甲烷總烴的測(cè)定 氣相色譜法
氧不干擾，柱效高，分離好，柱溫可達(dá)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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