| Literature DB >> 18722698 |
Gang Pan1, Chengxia Jia, Dongye Zhao, Chun You, Hao Chen, Guibin Jiang.
Abstract
Sorption and desorption of PFOS at water-sediment interfaces were investigated in the presence of a cationic surfactant, cetyltrimethylammonium bromide (CTAB), and an anionic surfactant, sodium dodecylbenzene sulfonate (SDBS). CTAB remarkably enhanced the sorption of PFOS on the sediment. In contrast, the influence of SDBS to the sorption of PFOS was concentration dependent. Two contrasting factors were responsible for the phenomenon. One was the sorption of the surfactant itself to the sediment, which enhanced the sorption of PFOS. The other was the increase in solubility of PFOS caused by the adding of surfactants, which decreased the sorption of PFOS. SDBS had a much lower sorption capacity, but rather strong ability to increase the solubility of PFOS. High levels of SDBS remarkably reduced the sorption of PFOS on the sediment. These results imply that cationic and anionic surfactants may have contrast impacts on the distribution and transport of PFOS in the environment.Entities:
Mesh：
Substances：
Year: 2008 PMID： 18722698 DOI： 10.1016/j.envpol.2008.06.035
Source DB: PubMed Journal: Environ Pollut ISSN： 0269-7491 Impact factor: 8.071