Occurrence, spatiotemporal distribution, seasonal and annual variation, and source apportionment of poly– and perfluoroalkyl substances (PFASs) in the northwest of Tai Lake Basin, China

IF 12.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials Pub Date : 2021-08-15 DOI:10.1016/j.jhazmat.2021.125784

Wenkai An , Lei Duan , Yizhe Zhang , Bin Wang , Cristina Su Liu , Fang Wang , Qian Sui , Dongjiong Xu , Gang Yu

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引用次数: 14

Abstract

Poly- and perfluoroalkyl substances (PFASs) have attracted mounting attention due to their potential harmful effects and degradation-resistant property. This study continuously monitored the concentration of PFASs for four seasons in two years in the northwest of Tai Lake Basin. The occurrence, spatiotemporal distribution, seasonal and annual variation, and source apportionment of 13 PFASs were investigated in 60 surface water sampling sites and 33 emission sources. The average concentrations of the total PFASs were 205.6 ng L⁻¹ and 171.9 ng L⁻¹ in 2018 and 2019, respectively. This improvement could be mainly attributed to the local industrial restructuring. Furthermore, principal component analysis and heat map-hierarchical cluster analysis were employed to analyze distribution characteristics and the possible sources of PFASs pollution. It showed that perfluorooctane sulfonate (PFOA) mainly originated from the effluents of chemical plants, while the potential source of perfluorohexane sulfonate (PFHxS) included all the three types of emission sources. Besides, two indicators were adopted to evaluate the impact of non-point sources and the result showed the effect of runoff was obvious while the effect of atmospheric deposition was weak. A systematic mass balance calculation showed that the total riverine input flux from Wujin District to Tai Lake was 126.5 kg/a.

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太湖流域西北部多氟和全氟烷基物质(PFASs)的发生、时空分布、季节和年变化及来源解析

聚氟烷基和全氟烷基物质(PFASs)因其潜在的有害影响和耐降解性而受到越来越多的关注。本研究对太湖流域西北部4个季节的PFASs浓度进行了2年的连续监测。对60个地表水采样点和33个排放源的13种PFASs的发生、时空分布、季节和年变化及来源分配进行了研究。2018年和2019年总PFASs的平均浓度分别为205.6 ng L−1和171.9 ng L−1。这主要得益于地方产业结构调整。采用主成分分析法和热图-分层聚类分析法分析全氟辛烷磺酸的分布特征和可能的污染源。结果表明，全氟辛烷磺酸(PFOA)主要来源于化工厂的废水，而全氟己烷磺酸(PFHxS)的潜在来源包括这三种排放源。此外，采用两个指标评价非点源的影响，结果表明径流的影响明显，大气沉降的影响较弱。系统质量平衡计算表明，武进区至太湖的总河流输入通量为126.5 kg/ A。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Hazardous Materials 工程技术-工程：环境

CiteScore

25.40

自引率

5.90%

发文量

3059

审稿时长

58 days

期刊介绍： The Journal of Hazardous Materials serves as a global platform for promoting cutting-edge research in the field of Environmental Science and Engineering. Our publication features a wide range of articles, including full-length research papers, review articles, and perspectives, with the aim of enhancing our understanding of the dangers and risks associated with various materials concerning public health and the environment. It is important to note that the term "environmental contaminants" refers specifically to substances that pose hazardous effects through contamination, while excluding those that do not have such impacts on the environment or human health. Moreover, we emphasize the distinction between wastes and hazardous materials in order to provide further clarity on the scope of the journal. We have a keen interest in exploring specific compounds and microbial agents that have adverse effects on the environment.