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Fugacity approach to evaluate the sediment-water diffusion of polycyclic aromatic hydrocarbons

文献类型：期刊论文

作者Wang, De-Gao1,2; Alaee, Mehran2; Byer, Jonathan2,3; Liu, Yong-Jun1; Tian, Chong-Guo4
刊名JOURNAL OF ENVIRONMENTAL MONITORING
出版日期2011-06-01
卷号13期号:6页码:1589-1596
关键词Persistent Organic Pollutants Air-soil Exchange Organochlorine Pesticides Polychlorinated-biphenyls Partition-coefficients Aqueous Solubilities Agricultural Soils United-states Soot Carbon Pahs
ISSN号1464-0325
产权排序[Wang, De-Gao; Liu, Yong-Jun] Dalian Maritime Univ, Dept Environm Sci & Engn, Dalian, Peoples R China; [Wang, De-Gao; Alaee, Mehran; Byer, Jonathan] Environm Canada, Sci & Technol Branch, Water Sci & Technol Directorate, Burlington, ON L7R 4A6, Canada; [Byer, Jonathan] Queens Univ, Dept Chem, Kingston, ON K7L 3N6, Canada; [Tian, Chong-Guo] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai, Peoples R China
通讯作者Wang, DG, Dalian Maritime Univ, Dept Environm Sci & Engn, Dalian, Peoples R China.degaowang@163.com
文献子类Article
英文摘要Diffusion is an important process for sediment-water exchange and plays a vital role in controlling water quality. Fugacity fraction (ff) was used to estimate the sediment-water diffusion of polycyclic aromatic hydrocarbons (PAHs) between seawater and surficial sediment. A total of 33 surface sediment and sea water samples were collected concurrently from the northeast coastal area in China and 25 PAHs were analyzed including the alkylated and chlorated PAHs. Fugacity fraction was calculated based on the PAH concentrations in water and sediment, octanol-water partition coefficient of PAHs, organic matter content in sediment, and density of sediment. The calculated results showed that ff increased with decreasing molecular weight of PAHs. The low molecular weight PAHs (2-3 rings) transferred from sediment to water and the sediment acted as a secondary source to the water. The medium molecular weight PAHs (4-5 rings) were close to the sediment-water equilibrium and the transfer tendency shifted between sediment and water. The high molecular weight PAHs (5-6 rings) transferred from water into sediment and the sediment acted as a sink. Soot carbon and the difference of PAH concentrations between sediment and water were found to be important factors affecting the sediment-water diffusion. This study provided new insight into the process of sediment-water diffusion, which has a great influence on the quality of water, especially in severely-polluted sediment areas.; Diffusion is an important process for sediment-water exchange and plays a vital role in controlling water quality. Fugacity fraction (ff) was used to estimate the sediment-water diffusion of polycyclic aromatic hydrocarbons (PAHs) between seawater and surficial sediment. A total of 33 surface sediment and sea water samples were collected concurrently from the northeast coastal area in China and 25 PAHs were analyzed including the alkylated and chlorated PAHs. Fugacity fraction was calculated based on the PAH concentrations in water and sediment, octanol-water partition coefficient of PAHs, organic matter content in sediment, and density of sediment. The calculated results showed that ff increased with decreasing molecular weight of PAHs. The low molecular weight PAHs (2-3 rings) transferred from sediment to water and the sediment acted as a secondary source to the water. The medium molecular weight PAHs (4-5 rings) were close to the sediment-water equilibrium and the transfer tendency shifted between sediment and water. The high molecular weight PAHs (5-6 rings) transferred from water into sediment and the sediment acted as a sink. Soot carbon and the difference of PAH concentrations between sediment and water were found to be important factors affecting the sediment-water diffusion. This study provided new insight into the process of sediment-water diffusion, which has a great influence on the quality of water, especially in severely-polluted sediment areas.
学科主题Chemistry, Analytical ; Environmental Sciences
WOS关键词PERSISTENT ORGANIC POLLUTANTS ; AIR-SOIL EXCHANGE ; ORGANOCHLORINE PESTICIDES ; POLYCHLORINATED-BIPHENYLS ; PARTITION-COEFFICIENTS ; AQUEOUS SOLUBILITIES ; AGRICULTURAL SOILS ; UNITED-STATES ; SOOT CARBON ; PAHS
WOS研究方向Chemistry ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000291403300007
资助机构Chinese Academy of Sciences Initiative [KZCX1-YW-06, KZCX2-EN-QN210, KZCX2-YW-Q07-04]; CAS/SAFEA ; Shandong Province Project [2007GG2QT06018]
公开日期2011-07-22
源URL[http://ir.yic.ac.cn/handle/133337/4894]  
专题烟台海岸带研究所_污染过程与控制实验室
作者单位1.Dalian Maritime Univ, Dept Environm Sci & Engn, Dalian, Peoples R China
2.Environm Canada, Sci & Technol Branch, Water Sci & Technol Directorate, Burlington, ON L7R 4A6, Canada
3.Queens Univ, Dept Chem, Kingston, ON K7L 3N6, Canada
4.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai, Peoples R China
推荐引用方式
GB/T 7714		 Wang, De-Gao,Alaee, Mehran,Byer, Jonathan,et al. Fugacity approach to evaluate the sediment-water diffusion of polycyclic aromatic hydrocarbons[J]. JOURNAL OF ENVIRONMENTAL MONITORING,2011,13(6):1589-1596.
APA Wang, De-Gao,Alaee, Mehran,Byer, Jonathan,Liu, Yong-Jun,&Tian, Chong-Guo.(2011).Fugacity approach to evaluate the sediment-water diffusion of polycyclic aromatic hydrocarbons.JOURNAL OF ENVIRONMENTAL MONITORING,13(6),1589-1596.
MLA Wang, De-Gao,et al."Fugacity approach to evaluate the sediment-water diffusion of polycyclic aromatic hydrocarbons".JOURNAL OF ENVIRONMENTAL MONITORING 13.6(2011):1589-1596.

入库方式： OAI收割

来源：烟台海岸带研究所

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