Occurrence, sources and health risk of polyfluoroalkyl substances (PFASs) in soil, water and sediment from a drinking water source area

被引:109
作者
Cao, Xianghui [1 ,2 ]
Wang, Chenchen [1 ,2 ]
Lu, Yonglong [1 ,2 ]
Zhang, Meng [1 ,2 ]
Khan, Kifayatullah [1 ,3 ]
Song, Shuai [1 ,2 ]
Wang, Pei [1 ,2 ]
Wang, Cong [1 ,2 ]
机构
[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, 18 Shuangqing Rd, Beijing 100085, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Univ Swat, Dept Environm & Conservat Sci, Swat 19130, Pakistan
基金
中国国家自然科学基金; 国家重点研发计划;
关键词
PPASs; Headwater source; Drinking water; Source apportionment; Health risk; PERFLUOROOCTANE SULFONATE PFOS; PERFLUOROALKYL ACIDS PFAAS; SHALLOW EUTROPHIC LAKE; PERFLUORINATED COMPOUNDS; SURFACE WATERS; ORGANIC CONTAMINANTS; SPATIAL-DISTRIBUTION; COASTAL WATERS; SOUTH CHINA; TAIHU LAKE;
D O I
10.1016/j.ecoenv.2019.02.058
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Polyfluoroalkyl substances (PFASs) enter into environmental metric via various pathways in the process of manufacturing and consuming the products containing PFASs. Yuqiao reservoir (YQR) is a major drinking water source in Tianjin of China, where little attention was given to PFASs. To explore the occurrence, source and risk of 17 PFASs, multi -media environmental including soil, water, and sediment were sampled from this water source area. The Sigma PFASs concentrations of surface water, groundwater, soil and sediment ranged from 5.839 to 120.885 ng/L, 1.426 to 17.138 ng/L, 0.622 to 5.089 mu g/kg dw, and 0.240 to 1.210 mu g/kg dw respectively. Some short-chained (C4-C8) PFASs were detected widely such as PFOA, PFBA, PFHxA, PFBS, PFHpA and PFPeA in surface water and groundwater, with the detection frequency of > 78%, and PFBA and PFOA dominated in the 17 PFASs. In addition, the correlations between total PFASs and TOC were significant at 0.05 level, especially in surface water with R-2 = 0.9165 (p = 0.011). In terms of vertical distribution characteristics of Sigma PFASs, the Sigma PFASs in four sediment cores showed a decreasing trend at first, and then an increasing trend from the bottom to the top associated with TOC. PFBA/PFOA and PFHpA/PFOA showed better linear correlations with R-2 of 0.5541 (p = 0.039), and for PFNA/PFOA and PFHpA/PFOA with R-2 of 0.6312 (p = 0.032) at the 0.05 level in the surface water, which indicated that sewage and atmospheric precipitation were the major sources. Though the RQ results based on the measured concentrations and reference values in environmental media revealed lower risks, the potential hazard may occur due to accumulation characteristics and long-distance transmission capability of PFASs. Hence, the corresponding management strategies should be taken, such as control over emission at source, product substitution and strengthening legislation, to eliminate potential risks to human health.
引用
收藏
页码:208 / 217
页数:10
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