Spatial distribution and fate of perfluoroalkyl substances in sediments from the Pearl River Estuary, South China

被引：46
作者：
Gao, Yan [1 ]
Fu, Jianjie [1 ]
Meng, Mei [1 ]
Wang, Yawei [1 ,2 ,3 ]
Chen, Baowei [4 ]
Jiang, Guibin [1 ]
机构：
[1] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China
[2] Jianghan Univ, Inst Environm & Hlth, Wuhan 430056, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[4] Hong Kong Polytech Univ, Dept Civil & Environm Engn, Kowloon, Hong Kong, Peoples R China
来源：
MARINE POLLUTION BULLETIN | 2015年 / 96卷 / 1-2期
关键词：
PFASs; Sediment; Pearl River Estuary; Risk assessment; PERFLUOROOCTANE SULFONATE PFOS; PERFLUORINATED COMPOUNDS; POLYFLUOROALKYL COMPOUNDS; SURFACE SEDIMENTS; COASTAL WATERS; YANGTZE-RIVER; HUMAN BLOOD; BOHAI SEA; HONG-KONG; ACIDS;
D O I：
10.1016/j.marpolbul.2015.05.022
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this study, 54 sediment samples were collected from the Pearl River Estuary (PRE) in Southern China to study the spatial distribution and patterns of PFASs in this region. PFAS concentrations in the sediment samples ranged from nd (below detection limit) to 2.41 ng g(-1) dw (dry weight) with an average value of 0.79 ng g(-1) dw. PFAS concentrations were higher at the nearshore sampling sites than in the others. Perfluorobutanesulfonate (PFBS) and perfluorohexanesulfonate (PFHxS) were the two dominant compounds among the target PFASs, which may be due to their production and use as PFOS substitutes in the Pearl River Delta (PRD) areas. Significant linear relationships were found between total PFAS concentrations and total organic carbon (TOC) (R = 0.30, p < 0.05). The preliminary environmental risk assessment indicated that PFOS and PFOA in the regional sediments posed no significant ecological risk to the benthic organisms at present levels. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：226 / 234
页数：9
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