期刊
MARINE CHEMISTRY
卷 115, 期 1-2, 页码 66-71出版社
ELSEVIER
DOI: 10.1016/j.marchem.2009.06.006
关键词
Benzyl butyl phthalate; Sorption; Marine sediment; Seawater
资金
- University of Hong Kong [200607176104]
- Research Grants Council [HKU7149/06E]
- University Grants Committee (UGC) of the Hong Kong SAR Government, China [AoE/P-04/2004]
Benzyl butyl phthalate (BBP) is an endocrine-disrupting chemical, and its sorption behaviour on marine sediments was investigated. BBP sorption on the sediments was a rapid process, which could reach equilibrium in 6 h. The sorption equilibrium results could be well described by a linear isotherm. The BBP partition coefficient, K-d, varied from 7.16 to 12.54 L/g in approximately proportion to the organic content of the sediments. After H2O2 oxidation for removing the organic material from the sediments, the Kd values were reduced by more than 70%, but the organic normalised partition coefficient averaged 2165 L/g for the H2O2-treated sediments, which was more than three times of 598 L/g for the raw sediments. The sorption of BBP on the sediments increased with a decrease in temperature and an increase in salinity. A salting constant of 1.14 L/mol was obtained for BBP in artificial seawater. These research findings are of importance to an assessment of the fate and transport of BBP and other similar endocrine-disrupting chemicals (EDCs) in seawater-sediment systems. (C) 2009 Elsevier B.V. All rights reserved.
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