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Organic carbon normalized soil and sediment-water partitioning (Koc) coefficients were estimated for all C1 through C8 perfluorinated alkylsulfonic acid (PFSA) and alkylcarboxylic acids (PFCA) congeners. The limited experimental Koc dataset for the straight chain C7 through C10 PFCAs and C8 and C10 PFSAs was correlated to SPARC and ALOGPS computationally estimated octanol-water partitioning constants and used to predict Koc values for both branched and linear C1 through C8 isomers. All branched and linear congeners in this homologue range are expected to have Koc values>1, leading to their accumulation in organic matter on sediments and soils, retardation during ground and pore water flow, and the preferential association with dissolved organic matter in aquatic systems. Both *Address correspondence to Sierra Rayne, Department of Chemistry, University of Winnipeg, Winnipeg, Manitoba, Canada; Phone: +1 204 786 9265, Fax: +1 204 775 2114; E-mail: rayne.sierra@gmail.com 1 Nature Precedings : hdl:10101/npre.2009.3011.1 : Posted 31 Mar 2009

nature precedings

Congener specific organic carbon normalized soil and sediment-water partitioning coefficients for the C1 through C8 perfluorinated alkylsulfonic and alkylcarboxylic acids