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热脱附-气相色谱法测定环境空气中芳烃和卤代烃
引用本文:李英堂,李 伟,赖荣晖.热脱附-气相色谱法测定环境空气中芳烃和卤代烃[J].环境监测管理与技术,2004,16(1):29-31.
作者姓名:李英堂  李 伟  赖荣晖
作者单位:齐鲁石化公司环境监测站,山东,淄博,255400
摘    要:建立了热脱附-气相色谱法测定环境空气中9种芳烃和卤代烃方法。阐述了样品管制备、采样袋预处理、现场采样和实验富集等过程。采用保留时间定性、外标法定量。进行了自动热脱附仪的吸附和解吸效率的试验,各组分的吸附效率均在97%以上,解吸效率达98 9%。最低检出质量浓度氯乙烯为0 0003mg/m3、1,2-二氯乙烷和1,2-二氯丙烷为0 0002mg/m3、苯、甲苯、乙苯、对二甲苯、苯乙烯和邻二甲苯均为0 0001mg/m3。试图以不更换TenaxTA吸附剂标准冷阱来测定齐鲁石化环境空气中特征污染物乙烯,由于冷阱对乙烯的二级吸附未能很好地解决,试验效果不理想,有待进一步研究。

关 键 词:热脱附-气相色谱法  芳烃  卤代烃  环境空气  石油化工
文章编号:1006-2009(2004)01-0029-03
修稿时间:2003年3月24日

To Determine Aromatic Hydrocarbon and Halogenated Hydrocarbon in Ambient Air with Heat Desorption - GC
LI Ying-tang,LI Wei,LAI Rong-hui.To Determine Aromatic Hydrocarbon and Halogenated Hydrocarbon in Ambient Air with Heat Desorption - GC[J].The Administration and Technique of Environmental Monitoring,2004,16(1):29-31.
Authors:LI Ying-tang  LI Wei  LAI Rong-hui
Abstract:Method to determine nine kinds of aromatic hydrocarbon and halogenated hydrocarbon in ambient air with heat desorption-GC was studied. The procedure about sample vitro making, sample bag pre-treat, sampling and enrichment in-site was discussed. To detect with retention time method for qualitative analysis, and with external standard method for quantitative analysis. Experiment was undertaken to test the effect of absorption and de-absorption of automatic heat desorption. All elements' absorption effect was more than 97%, the average de-absorption effect was 98.9%. The lowest detection mass concentration was that: chloroethane was 0.000 3 mg/m~3, 1,2-dichloroethane and 1,2-dichloropropane were 0.000 2 mg/m~3, benzene, methyl benzene, p-dimethylbenzene, vinylbenzene and o-dimethylbenzene were all 0.000 1 mg/m~3. Try to detect the characteristic pollutant of ethylene in ambient air, without changing Tenax TA absorbent standard cool trap, but the test result was not good because of the absorption of ethylene.
Keywords:Heat desorption -GC  Aromatic hydrocarbon  Halogenated hydrocarbon  Ambient air  Petrochemistry industry  
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