Distribution and deposition of polycyclic aromatic hydrocarbons in precipitation in Guangzhou, South China
文献类型： 外文期刊
作者： Huang Deyin 1 ; Peng Ping'an 1 ; Xu Yigang 4 ; Deng Yunyun 1 ; Deng Hongmei 1 ;
作者机构： 1.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China
2.Guangdong Inst Ecoenvironm & Soil Sci, Guangdong Key Lab Agr Environm Pollut Integrated, Guangzhou 510650, Guangdong, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
4.Chinese Acad Sci, Key Lab Isotope Geochronol & Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China
关键词： polycyclic aromatic hydrocarbons;distribution coefficient;deposition flux;precipitation;Guangzhou
期刊名称：JOURNAL OF ENVIRONMENTAL SCIENCES （ 影响因子：5.565； 五年影响因子：5.066 ）
ISSN： 1001-0742
年卷期： 2009 年 21 卷 5 期
页码：
收录情况： SCI
摘要： Polycyclic aromatic hydrocarbons (PAHs) were measured in precipitation from March to August 2005 in Guangzhou, South China. Fourteen PAHs were studied, and their total concentrations varied from 616.6 to 3486.7 ng/L in dissolved phase and from 403.8 to 3125.5 ng/L in particulate phase. The estimated deposition loading of PAHs was 3568 mu g/m(2) during the monitoring period. The deposition of PAHs was a potential source for Pearl River comparing with the contents of surface water. In addition, the high concentration in precipitation here implied that PAHs pollution was a potential environmental problem in Guangzhou. Most precipitation concentrations of PAHs in March (the last month in winter in Guangzhou) were higher than in the other months (in rainy season). PAHs inclined to be adsorbed to particulate phase with the increase of molecular weight in rainwater. Combustion of fossil fuel and biomass might be the major source of PAHs, while the direct leakage or volatilization from petroleum products might be insignificant.
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