杭州市大气中酮、醛、酯类化合物的成分分析  

Components analysis of ketonic,aldehyde,and ester compounds in atmosphere of Hangzhou urban area

作　　者：滕卫林[1] 栾丽娃[1] 刘卫艳[1] 金铨[1] 张宜明[1] 

机构地区：[1]杭州市疾病预防控制中心,杭州310006

出　　处：《中国卫生检验杂志》2009年第2期410-411,419,共3页Chinese Journal of Health Laboratory Technology

摘　　要：目的:了解杭州市区大气中挥发性酮、醛、酯的种类和浓度水平。方法:在杭州市城区东、南、西、北部各选择1个采样点,采集大气样品,用热解吸-气质联用法分析了杭州市区大气中挥发性酮、醛、酯类化合物的成分和浓度。结果:在97件样品中,共检出酮类化合物6种、醛类化合物10种、酯类化合物5种。丙酮、2-丁酮和6-甲基-5-庚烯-2-酮、正戊醛、正辛醛、正壬醛、正癸醛、乙酸乙酯、乙酸丁酯是主要污染物。全市区大气中总酮平均浓度为4.46μg/m3、总醛14.43μg/m3、总酯2.46μg/m3。城区西部和市中心的总醛浓度十分接近,且高于东部和南部。结论:杭州市区大气中丙酮、2-丁酮和6-甲基-5-庚烯-2-酮是酮类的主要成分,正戊醛、正辛醛、正壬醛、正癸醛是醛类的主要成分,乙酸乙酯和乙酸丁酯是主要的酯类组分。全市区不同区域总酮、总酯的平均浓度基本相同。Objective：To investigate categories and concentration levels of volatile ketone, aldehyde, and ester in the atmosphere of Hangzhou urban area. Methods：The method of thermal desorption gas chromatographic -mass spectrometry （GC -MS） was applied to analyze components and concentrations of volatile ketonic, aldehyde, and ester compounds in the atmosphere of Hangzhou urban area. Results：Totally,6 ketonic compounds, 10 aldehyde compounds, and 5 ester compounds were detected. And acetone, 2 - butanone, 6 - methyl - 5 - hepten - 2 - one, pentanal, octanal, nonanal, decanal, ethyl acetate, and butyl acetate were main contaminations. In the atmosphere, the average concentration level of overall ketone was 4. 46 I, Lg,/m3 , aldehyde 14. 43 [tl.g/m3, and ester 2. 46 ~g,/m3. Conclusion：The average concentration levels of overall ketone and ester in different places of the whole urban area are similar. The concentration level of overall aldehyde in the west is very near to that in the center, but they are significantly higher than those in the east and the south. And as for aldehyde and ester compounds and some ketonic compounds, there is an increasing trend of their concentration levels from morning toward afternoon. A linear relation is found significant be- tween main ketonic compounds and aldehyde compounds.

关 键 词：空气污染 挥发性有机物 酮 醛 酯 

分 类 号：R122.1[医药卫生—环境卫生学]