為了解決固定污染源非甲烷總烴（NMHC）在線監(jiān)測系統(tǒng)比對中，在實驗室中氣相色譜（GC）法檢測樣品結(jié)果偏低的問題，浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司采用便攜式和實驗室GC儀進行實驗對比，從載氣選擇、標(biāo)準(zhǔn)參考氣體、儲存時間和樣品前處理方面，分析對NMHC檢測的影響，提高實驗室的測試結(jié)果準(zhǔn)確性。表明，現(xiàn)場采樣完成后，樣品需避光并低溫保存運輸。樣品上機測試前需放理化干燥箱中加熱至液滴凝結(jié)現(xiàn)象消除后測試，樣品從采樣到分析要在8 h內(nèi)完成。對于分析不同行業(yè)成分較復(fù)雜廢氣組分，采用甲烷、丙烷混合標(biāo)氣，這樣測定結(jié)果接近固定污染源原始排放濃度。
名稱：總烴柱
數(shù)量：5只
規(guī)格：1.5m*1/8，60-80目
最高使用溫度：300°C
制造：浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司
注：帶套管端為進氣口。
名稱：甲烷柱
數(shù)量：5只
規(guī)格：1.5m*1/8，60-80目
最高使用溫度：250°C
制造：浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司
注：帶套管端為進氣口。
In order to solve the problem of low detection results of gas chromatography (GC) method in the laboratory for non methane total hydrocarbons (NMHC) in the online monitoring system comparison of fixed pollution sources, Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. used portable and laboratory GC instruments for experimental comparison, analyzing the impact on NMHC detection from the aspects of carrier gas selection, standard reference gas, storage time, and sample pretreatment, Improve the accuracy of laboratory test results. It indicates that after on-site sampling is completed, the samples need to be kept away from light and stored at low temperature for transportation. Before the sample is tested on the machine, it needs to be heated in a physical and chemical drying oven until the phenomenon of droplet condensation is eliminated before testing. The sample needs to be completed within 8 hours from sampling to analysis. For the analysis of complex exhaust gas components in different industries, a mixture of methane and propane standard gas is used, so that the measurement results are close to the original emission concentration of fixed pollution sources.
Name: Total hydrocarbon column
Quantity: 5 pieces
Specification: 1.5m * 1/8, 60-80 mesh
Maximum operating temperature: 300 ° C
Manufacturing: Haohan Chromatography (Shandong) Application Technology Development Co., Ltd
Note: The end with casing is the air inlet.
Name: Methane column
Quantity: 5 pieces
Specification: 1.5m * 1/8, 60-80 mesh
Maximum operating temperature: 250 ° C
Manufacturing: Haohan Chromatography (Shandong) Application Technology Development Co., Ltd
Note: The end with casing is the air inlet.
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