期刊
ENVIRONMENTAL POLLUTION
卷 158, 期 7, 页码 2511-2517出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2010.03.010
关键词
Pesticide; Passive sampling; Free aqueous concentration; Aqueous environment; Persistent organic pollutants
资金
- Engineering and Physical Sciences Research Council [EP/P502624/1]
- Research Council of Norway (NFR) [178141]
The mass transfer rates and equilibrium partitioning behaviour of 14 diverse organochlorine pesticides (OCP) between water and polyethylene (PE) passive samplers, cut from custom made PE sheets and commercial polyethylene plastic bags, were quantified. Overall mass transfer coefficients, k(O), estimated PE membrane diffusion coefficients, D-PE, and PE-water partitioning coefficients, KPE-water, are reported. In addition, the partitioning of three polycyclic aromatic hydrocarbons (PAHs) from water to PE is quantified and compared with literature values. KPE-water values agreed mostly within a factor of two for both passive samplers and also with literature values for the reference PAHs. As PE is expected to exhibit similar sorption behaviour to long-chain alkanes, PE-water partitioning coefficients were compared to hexadecane-water partitioning coefficients estimated with the SPARC online calculator, COSMOtherm and a polyparameter linear free energy relationship based on the Abraham approach. The best correlation for all compounds tested was with COSMOtherm estimated hexadecane-water partitioning coefficients. (C) 2010 Elsevier Ltd. All rights reserved.
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