title: Investigation on the distribution and fate of perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA) in a sewage-impacted bay.
abstract: The distribution and fate of perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA) were investigated in the water and sediment of Bohai Bay, China, during 2011-2013. A total of 360 water samples and 60 sediment samples were collected from 20 locations. The median concentrations of PFOS and PFOA were 4.8 and 12.15 ng/L in the water, and 2.65 and 0.62 ng/g-dry in the sediment, respectively. Significant enrichment were observed for PFOS and PFOA in water of sea surface microlayer. The concentrations of these two compounds showed an apparent gradient from nearshore to offshore stations. The correlation analysis and the distribution tendencies indicated that freshwater inflowing to the bay was the main source of PFOS and PFOA. The salinity of seawater and the total organic carbon (TOC) content of sediment heavily affected the spatial distribution and the partitioning of PFOS and PFOA in the sediment-water system.
authors.affiliation: State Key Joint Laboratory on Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China; School of Geography and Tourism, Qufu Normal University, Rizhao 276826, China.
authors.forename: Shiliang
authors.initials: S
authors.lastname: Wang
authors.affiliation: State Key Joint Laboratory on Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China. Electronic address: wanghui@tsinghua.edu.cn.
authors.forename: Hui
authors.initials: H
authors.lastname: Wang
authors.affiliation: School of Geography and Tourism, Qufu Normal University, Rizhao 276826, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhao
authors.affiliation: School of Geography and Tourism, Qufu Normal University, Rizhao 276826, China.
authors.forename: Yuanxin
authors.initials: Y
authors.lastname: Cao
authors.affiliation: School of Geography and Tourism, Qufu Normal University, Rizhao 276826, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Wan
mesh_terms: D017738:Alkanesulfonic Acids / Q000032:analysis*; D061006:Bays; D002210:Caprylates / Q000032:analysis*; D002681:China; D005466:Fluorocarbons / Q000032:analysis*; D019015:Geologic Sediments / Q000032:analysis; D054712:Salinity; D012623:Seawater / Q000032:analysis; D012722:Sewage / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D017738:Alkanesulfonic Acids; D002210:Caprylates; D005466:Fluorocarbons; D012722:Sewage; D014874:Water Pollutants, Chemical; C023036:perfluorooctanoic acid; C076994:perfluorooctane sulfonic acid
keywords: Distribution; Partitioning; Perfluorooctane sulfonate; Perfluorooctanoate; Salinity