title: Occurrence and partition of perfluorinated compounds in water and sediment from Liao River and Taihu Lake, China.
abstract: The concentrations of four perfluorinated sulfonate acids (PFSAs) and 10 perfluorinated carboxylate acids (PFCAs) were measured in water and sediment samples from Liao River and Taihu Lake, China. In the water samples from Taihu Lake, PFOA and PFOS were the most detected perfluorinated compounds (PFCs); in Liao River, PFHxS was the predominant PFC followed by PFOA, while PFOS was only detected in two of the samples. This suggests that different PFC products are used in the two regions. PFOS and PFOA in both watersheds are at similar level as in the rivers of Japan, but significantly lower than in Great Lakes. The contributions of PFOS and long chain PFCAs in sediments were much higher than in water samples of both watersheds, indicating preferential partition of these PFCs in sediment. The concentrations of PFOS and PFOA were three orders of magnitude of lower than that of polycyclic aromatic hydrocarbons in the same sediments. The average sediment-water partition coefficients (log K(oc)) of PFHxS, PFOS and PFOA were determined to be 2.16, 2.88 and 2.28 respectively.
authors: College of Environmental Science and Engineering, Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Nankai University, Tianjin 300071, China.
authors: Liping
authors: L
authors: Yang
authors: Lingyan
authors: L
authors: Zhu
authors: Zhengtao
authors: Z
authors: Liu
mesh_terms: D002681:China; D004784:Environmental Monitoring; D005466:Fluorocarbons / Q000032:analysis*; D005618:Fresh Water / Q000737:chemistry*; D019015:Geologic Sediments / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data
chemical_list: D005466:Fluorocarbons; D014874:Water Pollutants, Chemical