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题名: Spatial distribution, temporal variation and risks of parabens and their chlorinated derivatives in urban surface water in Beijing, China
作者: Li, Wenhui; Gao, Lihong; Shi, Yali; Wang, Yuan; Liu, Jiemin; Cai, Yaqi
刊名: SCIENCE OF THE TOTAL ENVIRONMENT
出版日期: 2016-01-01
卷号: 539, 期号:0, 页码:262-270
关键词: Parabens ; Urban surface water ; Spatial distribution ; Temporal variation ; Risk assessment
DOI: 10.1016/j.scitotenv.2015.08.150
部门归属: 环境化学与生态毒理学国家重点实验室
英文摘要: The occurrence and distribution of 13 target compounds, including eight parabens, four chlorinated parabens and p-hydroxybenzoic acid (PHBA), were detected in surface water samples at 35 sampling sites in the Beijing River system, China. The surface water samples were collected from the main rivers and lakes in the urban area monthly from July 2013 to June 2014 (except the frozen period). Laboratory analyses revealed that parabens were ubiquitous in the surface water of Beijing. PHBA was the predominant compound in the surface water samples, with the average concentration of 239 ng L-1,followed by the total amount of chlorinated parabens (average 50.1 ng/L) and parabens (average 443 ng/L). It is noteworthy that octylparaben with longer chain was firstly detected in the surface water. Significant difference was observed for paraben concentrations from different sampling sites, and the highest level of parabens was found in the Xiaotaihou River, which was mainly due to the untreated sewage discharge. Seasonal variation of target compounds in the urban surface water was also studied, and parabens exhibited a different temporal variation from chlorinated derivatives. A combination of factors including high residual chlorine level and water temperature as well as intense ultraviolet radiation might enhance the persistence of chlorinated parabens in chlorinated water during the wet season. Risk assessment showed that parabens and their chlorinated derivatives are not likely to produce biological effects on aquatic ecosystems at current levels in the surface water of Beijing. (C) 2015 Elsevier B.V. All rights reserved.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/35950
Appears in Collections:环境化学与生态毒理学国家重点实验室_期刊论文

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