滕州市浩瀚色譜儀器技術(shù)服務(wù)有限公司，用玻璃注射器(氣袋)采集氣體樣品,以雙柱單氫火焰離子化檢測器的氣相色譜儀直接進行測定.進樣1.0mL樣品分別進入汽化室的總烴柱和甲烷柱中,由于這兩個柱子填充材料和長短差異,總烴先在FID上產(chǎn)生響應,然后甲烷在FID上產(chǎn)生響應.總烴的濃度扣除甲烷濃度和除烴空氣氧的濃度值,即可得到非甲烷總烴(NMHC)的濃度,可以實現(xiàn)單次進樣,同時完成總烴、甲烷、非甲烷總烴濃度的測定.文章研究1.37～22.3 mg/m3濃度甲烷標準氣,得出甲烷標準曲線方程為Y =715X +829,r=0.9990,相對標準偏差為0.26％～1.8％,總烴標準曲線方程Y=695X+ 724,相對標準偏差為0.35％ ～ 1.4％,除烴空氣(O2-N2,20.8％)相對標準偏差為0.75％.該法用于環(huán)境空氣和固定污染源有組織排放中NMHC含量分析,操作簡單,實驗結(jié)果滿意.

提供完整的分析方案
解決O2的干擾，負值的問題，

氣相色譜法測定非甲烷總烴的研究 圖片：

GDX-104/502，硅烷化玻璃微球填充柱
30m*0.53mm毛細管柱

Determination of Non-methane Total Hydrocarbons by Gas Chromatography
Determination of non-methane total hydrocarbons by gas chromatography

Tengzhou Haohao Chromatography Instrument Technology Service Co., Ltd. collects gas samples with glass syringes (air bags) and directly measures them with a gas chromatograph of a two-column single hydrogen flame ionization detector. The total volume of 1.0 mL samples entering the vaporization chamber In the hydrocarbon column and the methane column, due to the difference in the material and length of the two columns, the total hydrocarbon first responds on the FID, and then the methane responds on the FID. The total hydrocarbon concentration minus the methane concentration and the concentration of the dehydrogenated air oxygen The concentration of non-methane total hydrocarbons (NMHC) can be obtained, and a single injection can be achieved, and the total hydrocarbon, methane, and non-methane total hydrocarbon concentration can be determined. The article studies 1.37-22.3 mg/m3 concentration of methane standard gas. The methane standard curve equation is Y = 715X + 829, r = 0.9990, the relative standard deviation is 0.26% to 1.8%, the total hydrocarbon standard curve equation Y = 695X + 724, the relative standard deviation is 0.35% ~ 1.4%, except for hydrocarbon air ( O2-N2, 20.8%) The relative standard deviation is 0.75%. This method is applied to the analysis of NMHC content in organized emissions of ambient air and fixed pollution sources. The operation is simple and the experimental results are satisfactory.

Provide a complete analysis solution
Solve the interference of O2, the problem of negative value, the choice of column, and develop a unique analytical method

Determination of Non-methane Total Hydrocarbons by Gas Chromatography

GDX-104/502, silanized glass microsphere packed column
30m*0.53mm capillary column