P&T-GC法测定环境大气中的醛酮和苯  

Analysis of volatile aldehydes ketones and benzene in atmosphere by purge and trap-gas chromatography

作　　者：刘春波[1] 刘志华[1] 赵秀杰 李希强 陆舍铭 陈永宽[1] 招云芳[3,4] 缪明明[1] 

机构地区：[1]云南省烟草化学重点实验室云南烟草科学研究院,昆明650106 [2]红塔辽宁烟草(集团)有限责任公司技术中心,沈阳110000 [3]云南红塔烟草(集团)有限责任公司技术中心,云南玉溪653100 [4]云南大学化学科学与工程学院,昆明650091

出　　处：《中国卫生检验杂志》2010年第3期475-477,共3页Chinese Journal of Health Laboratory Technology

基　　金：云南省"烟草化学省创新团队"项目资助(2009CI014)

摘　　要：目的：醛、酮类污染物是环境中的主要污染物之一,其来源广、毒性大,各国对其排放都进行了严格的限制。准确检测环境中的醛、酮类污染物是评价环境质量的基础。为此建立了PT-GC法测定环境大气中的乙醛、丙醛、丁醛、丙酮、2-丁酮和苯。方法：通过水对环境大气进行捕集,利用吹扫捕集-气相色谱检测分析。结果：此方法有较好的重复性,相对标准偏差在4.8%以下;检出限为0.85～6.55 ng;6种物质的回收率在96.7%～101.3%之间。结论：该方法不用有机溶剂萃取和浓缩,减少了对环境的污染,具有灵敏度高、检出限低、定量准确、操作简便等特点。Objective：Pollutants such as aldehyde and ketone,among major pollutants in atmosphere environment,are strictly limited by every nation for their discharges because of their high toxicity and numerous sources.It is the base for appraising the atmosphere environmental quality that exactly determining the pollutants.So the analytical method of acetaldehyde,propionaldehyde,butyraldehyde,acetone,2-butanone and benzene in atmosphere environment has been established by Purge and Trap-Gas Chromatography.Methods：The Aldehydes Ketones and benzene in atmosphere environment was trapped by water,and detected by Purge and Trap-Gas Chromatography.Results：Results showed that this method achieved excellent reproducibility and the relative standard deviations were generally below 4.8%.Detection limit of this method was 0.85～6.55 ng.The recoveries were in the range of 96.7%～101.3%.Conclusion：The compounds can be extracted and concentrated without organic solvent being involved.The method has high sensitivity,low detection limit,accurate quantification and simple operation.

关 键 词：吹扫捕集 气相色谱 环境大气 挥发性羰基化合物 苯 醛酮类化合物 检出限 污染物 重复性 回收率 

分 类 号：O657.71[理学—分析化学]