废气中有机碳与总烃的关系研究
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摘要
采用气相色谱法研究了主要成分为异丁烷、氯乙烷和正己烷的废气中实际有机碳浓度与总烃浓度的相互关系。建立的分析方法含碳量在6.33～633mg/m3的范围内其线性关系良好,相关系数为0.9996,低浓度和高浓度回收率为106.3%和101.5%,相对标准偏差为1.36%。测定结果表明:废气中总烃浓度和实际的有机碳浓度并不一致,两者关系和废气中有机气体的种类有关,例如含有异丁烷、氯乙烷和正己烷的废气,其实际有机碳浓度高于总烃(以碳计)的浓度。
The relationship between the actual organic carbon concentration and the total hydrocarbon concentration in a stream of exhaust gas with isobutane,chloroethane and n-hexane was studied by gas chromatography.The established analytical method has a good linear relationship with the carbon content in the range of 6.33-633 mg/m3.The correlation coefficient is 0.9996.The recovery rates of low and high concentrations are 106.3% and 101.5%,and the relative standard deviation is 1.36%.The results show that the concentration of total hydrocarbons is not necessarily the same as the actual concentration of organic carbon in the exhaust gas,which is related to the types of organic gases in the exhaust gas.For example,waste gases containing isobutane,chloroethane and n-hexane.The actual concentration of organic carbon is higher than that of total hydrocarbons(calculated in carbon).
The relationship between the actual organic carbon concentration and the total hydrocarbon concentration in a stream of exhaust gas with isobutane,chloroethane and n-hexane was studied by gas chromatography.The established analytical method has a good linear relationship with the carbon content in the range of 6.33-633 mg/m3.The correlation coefficient is 0.9996.The recovery rates of low and high concentrations are 106.3% and 101.5%,and the relative standard deviation is 1.36%.The results show that the concentration of total hydrocarbons is not necessarily the same as the actual concentration of organic carbon in the exhaust gas,which is related to the types of organic gases in the exhaust gas.For example,waste gases containing isobutane,chloroethane and n-hexane.The actual concentration of organic carbon is higher than that of total hydrocarbons(calculated in carbon).
引文
[1]环境监测总站,扬州市环境监测中心站,浙江省环境监测中心.固定源废气总烃、甲烷和非甲烷总烃的测定气相色谱法:HJ 38-2017[S].北京:中国环境出版社,2017.
[2]桂燕君,徐丽娟.测定固定污染源废气中总烃的问题探讨[J].资源节约与环保,2017(5):46~50.
[3]刘功斌,胡锋,袁新龙.总烃测定的若干问题探讨[J].绿色科技,2016(12):166~169.
[4]吴银菊,瞿白露,李大庆,等.总烃监测分析研究[J].环境科学与管理,2017,42(5):134~137.
[5]王荣伟,金玉花,景福林.石化项目排放的总烃与总挥发性有机物的关系[J].石油化工设计,2011,28(4):60~61.
[6]叶梦西,张展毅,罗海鲲,等.总烃与总挥发性有机化合物检测结果的比较[J].广州环境科学,2012,27(4):14~19.
[2]桂燕君,徐丽娟.测定固定污染源废气中总烃的问题探讨[J].资源节约与环保,2017(5):46~50.
[3]刘功斌,胡锋,袁新龙.总烃测定的若干问题探讨[J].绿色科技,2016(12):166~169.
[4]吴银菊,瞿白露,李大庆,等.总烃监测分析研究[J].环境科学与管理,2017,42(5):134~137.
[5]王荣伟,金玉花,景福林.石化项目排放的总烃与总挥发性有机物的关系[J].石油化工设计,2011,28(4):60~61.
[6]叶梦西,张展毅,罗海鲲,等.总烃与总挥发性有机化合物检测结果的比较[J].广州环境科学,2012,27(4):14~19.