| Fugacity approach to evaluate the sediment-water diffusion of polycyclic aromatic hydrocarbons | |
Wang, De-Gao1,2; Alaee, Mehran2; Byer, Jonathan2,3; Liu, Yong-Jun1; Tian, Chong-Guo4
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| 发表期刊 | JOURNAL OF ENVIRONMENTAL MONITORING
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| ISSN | 1464-0325 |
| 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 |
| 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 |
| 作者部门 | 污染过程与控制实验室 |
| 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. |
| 文章类型 | Article |
| 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] |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | PERSISTENT ORGANIC POLLUTANTS ; AIR-SOIL EXCHANGE ; ORGANOCHLORINE PESTICIDES ; POLYCHLORINATED-BIPHENYLS ; PARTITION-COEFFICIENTS ; AQUEOUS SOLUBILITIES ; AGRICULTURAL SOILS ; UNITED-STATES ; SOOT CARBON ; PAHS |
| 研究领域[WOS] | Chemistry ; Environmental Sciences & Ecology |
| WOS记录号 | WOS:000291403300007 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/4893 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室_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. |
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