Separation and Analysis of Organic Compounds in Atmospheric Dust Fall by Gas Chromatography Hyphenated with Mass Spectrometry
摘 要
采用索氏萃取法提取大气降尘中的有机物,用自制的硅胶层析柱进行了分离纯化,并以气相色谱/质谱法对提取物进行了分析.结果表明:从临沂师范学院前十学生公寓和临沂市汽车总站采集到的大气降尘样品中都含有较多的烷类、醛酮类、苯类和酯类有机化合物,并检测到一定量的卤代烃、酞酸酯类、多环芳烃类等有害于健康的物质.经初步推测,大气降尘中的有机化合物与机动车尾气排放有很大关系.文中对大气降尘中有机化合物的分析将为进一步研究大气降尘中有害物质的来源、迁移及其转化规律提供参考.
Abstract
Samples of atmospheric dust fall were taken from some definite area in the city by dry method,and organic compounds in the sample were extracted with acetone in a Soxhlet′s extractor at 68 ℃ for 3 h.The extract was evaporated to 5 mL,then separated and purified on silica gel column.Organic compounds in the eluate from the column were analyzed by GC/MS.Analytical conditions of GC/MS were described in detail.Relatively high contents of alkanes,aldehydes,ketones,benzene homologues and esters especially some harmful compounds,i.e.halohydrocarbons,phthalates and polycyclic aromatic hydrocarbons,were found in the samples.It was deducted that the sources of these contaminants were the tail-gas discharged by the motor vehicles.The results of this work were helpful to the study on the source,migration and transformation of harmful organic substances in the atmospheric dust fall.
中图分类号 O657.37
所属栏目 工作简报
基金项目 临沂师范学院科研基金(XJ503004)
收稿日期 2006/10/30
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备注英荣建(1965-),男,山东临沭人,讲师,主要从事环境科学方面的研究.
引用该论文: YING Rong-jian,SONG Xing-liang,ZHU Hua-yu,ZHANG Cheng-tao. Separation and Analysis of Organic Compounds in Atmospheric Dust Fall by Gas Chromatography Hyphenated with Mass Spectrometry[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2007, 43(10): 823~826
英荣建,宋兴良,朱化雨,张成涛. 大气降尘中有机物的提取分离及其气相色谱-质谱分析[J]. 理化检验-化学分册, 2007, 43(10): 823~826
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参考文献
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【2】王赞红.大气降尘监测研究[J].干旱区资源与环境,2003,17(1):54-59.
【3】李志萍,陈肖刚,陈爱玖,等.环境中的多环芳烃及其生物修复技术[J].世界地质,2002,12,21(4):358-363.
【4】Pirrone N,Keeler G J.Dry deposition of semivolatile organic compounds to Lake Michigan[J].Environ Sci Technol,1995,29:2123-1232.
【5】钱广强,董治宝.大气降尘收集方法及相关问题研究[J].中国沙漠,2004,24(6):779-780.
【6】HaIkiewicz,J.On the Aliphatic and PAH Levels in the Southern Baltic Sea Atmosphere[J].Atmos Environ,1987,21(8):2057-2063.
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