Effect of salinity and sediment characteristics on the sorption and desorption of perfluorooctane sulfonate at sediment-water interface
文献类型：期刊论文
| 作者 | You, Chun ; Jia, Chengxia ; Pan, Gang |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2010-05 |
| 卷号 | 158期号:5页码:1343-1347 |
| 关键词 | Perfluorooctane sulfonate Sorption Desorption hysteresis Salinity Salting-out effect Ca-bridging effect |
| 中文摘要 | This study investigated the influence of solution salinity, pH and the sediment characteristics on the sorption and desorption of perfluorooctane sulfonate (PFOS). The results showed that the sorption of PFOS onto sediment increased by a factor of 3 as the CaCl(2) concentration increased from 0.005 to 0.5 mol L(-1) at pH 7.0, and nearly 6 at pH 8.0. Desorption hysteresis occurred over all salinity. The thermodynamic index of irreversibility (TII) values increased with increasing concentration of CaCl2. Maximum irreversibility was found in the sorption systems with CaCl(2) in the concentration of 0.5 mol L(-1). The results suggested that PFOS can be largely removed from the water with increasing salinity, and get trapped onto sediments irreversibly. These phenomena could be explained by salting-out effect and Ca-bridging effect. Studies also suggested that the content of total organic carbon is the dominant psychochemical properties of sediment controlling the sorption of PFOS. (C) 2010 Elsevier Ltd. All rights reserved. |
| WOS记录号 | WOS:000277726500030 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21229]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | You, Chun,Jia, Chengxia,Pan, Gang. Effect of salinity and sediment characteristics on the sorption and desorption of perfluorooctane sulfonate at sediment-water interface[J]. ENVIRONMENTAL POLLUTION,2010,158(5):1343-1347. |
| APA | You, Chun,Jia, Chengxia,&Pan, Gang.(2010).Effect of salinity and sediment characteristics on the sorption and desorption of perfluorooctane sulfonate at sediment-water interface.ENVIRONMENTAL POLLUTION,158(5),1343-1347. |
| MLA | You, Chun,et al."Effect of salinity and sediment characteristics on the sorption and desorption of perfluorooctane sulfonate at sediment-water interface".ENVIRONMENTAL POLLUTION 158.5(2010):1343-1347. |
入库方式： OAI收割
来源：生态环境研究中心
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