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广州万顷沙大气中醛酮类化合物的污染特征与来源分析
引用本文:胡平,文晟,魏世龙,刘永林,毕新慧,盛国英,傅家谟.广州万顷沙大气中醛酮类化合物的污染特征与来源分析[J].生态环境,2010,26(6):1387-1391.
作者姓名:胡平  文晟  魏世龙  刘永林  毕新慧  盛国英  傅家谟
作者单位:1. 中国科学院广州地球化学研究所//有机地球化学国家重点实验室,广东,广州,510640;中国科学院研究生院,北京,100049
2. 中国科学院广州地球化学研究所//有机地球化学国家重点实验室,广东,广州,510640
3. 中国科学院广州地球化学研究所//有机地球化学国家重点实验室,广东,广州,510640;上海大学环境与化学工程环境污染与健康研究所,上海,200444
基金项目:国家自然科学基金创新群体项目,中科院创新群体项目 
摘    要:对广州万顷沙大气中的醛酮类化合物进行了检测。实验方法是应用醛酮类化合物和2,4-二硝基苯肼(DNPH)迅速反应生成衍生物,产物在高效液相色谱上检测。结果表明,大气中可以检出12种醛酮类化合物,其中丙酮质量浓度最高,其次是甲醛、乙醛和丙醛。这4种化合物平均质量浓度分别是22.07、9.99、7.80和1.20μg·m-3。白天醛酮类化合物的质量浓度比夜晚的高。ρ(甲醛)/ρ(乙醛)、ρ(乙醛)/ρ(丙醛)的数值显示大气中醛酮类污染主要和人为来源有关。甲醛、乙醛、丙醛和丁醛的质量浓度具有良好的相关性。广州城区的污染物随风迁移到万顷沙,使万顷沙也具有城市环境污染特征。

关 键 词:醛酮类化合物  风向  大气  万顷沙  广州

Character of carbonyl compounds and their source in Guangzhou Wanqingsha atmosphere
HU Ping,WEN Sheng,WEI Shilong,LIU Yonglin,BI Xinhui,SHENG Guoying,FU Jiamo.Character of carbonyl compounds and their source in Guangzhou Wanqingsha atmosphere[J].Ecology and Environmnet,2010,26(6):1387-1391.
Authors:HU Ping  WEN Sheng  WEI Shilong  LIU Yonglin  BI Xinhui  SHENG Guoying  FU Jiamo
Institution:1, 2 1. State Key Laboratory of Organic Geochemistry//Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; 2. Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University; Shanghai 200444, China; 3. Graduate School of Chinese Academy of Sciences,Beijing 100049, China
Abstract:Carbonyl compounds were measured in Wanqingsha, Guangzhou. The measurements were based on the rapid reaction of carbonyl compounds with 2, 4-dinitrophenylhydrazine (DNPH), and their derivatives were detected by HPLC. 12 carbonyls were detected in samples. Acetone was the most abundant carbonyl, followed by formaldehyde, acetaldehyde and propionaldehyde. Con-centrations of these four carbonyls were 22.07, 9.99, 7.80 and 1.20 μg·m-3, respectively. Concentrations of carbonyl in daytime were higher than that at night. Concentrations rations of formaldehyde/acetaldehyde and acetaldehyde/propionaldehyde showed that an-thropogenic sources were the main sources. Pearson correlations for formaldehyde, acetaldehyde, propionaldehyde and butyralde-hyde showed they had similar sources. Wanqingsha was in the downwind of Guangzhou, the pollutants in urban atmosphere can transport to Wanqingsha.
Keywords:carbonyls  wind direction  ambient air  Wanqingsha  Guangzhou
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