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What's in the water? – Target and suspect screening of contaminants of emerging concern in raw water and drinking water from Europe and Asia

原水 水处理 污染 水质 环境化学 环境科学 人类健康 环境工程 水污染 化学 毒理 生物 生态学 环境卫生 医学
作者
Rikard Tröger,Hanwei Ren,Daqiang Yin,Cristina Postigo,Phuc Nguyen,Christine Baduel,Oksana Golovko,Frederic Beén,Hanna Joerss,Ma Rosa Boleda,Stefano Polesello,Marco Roncoroni,Sachi Taniyasu,Frank Menger,Lutz Ahrens,Foon Yin Lai,Karin Wiberg
出处
期刊:Water Research [Elsevier]
卷期号:198: 117099-117099 被引量:39
标识
DOI:10.1016/j.watres.2021.117099
摘要

There is growing worry that drinking water can be affected by contaminants of emerging concern (CECs), potentially threatening human health. In this study, a wide range of CECs (n = 177), including pharmaceuticals, pesticides, perfluoroalkyl substances (PFASs) and other compounds, were analysed in raw water and in drinking water collected from drinking water treatment plants (DWTPs) in Europe and Asia (n = 13). The impact of human activities was reflected in large numbers of compounds detected (n = 115) and high variation in concentrations in the raw water (range 15-7995 ng L−1 for ∑177CECs). The variation was less pronounced in drinking water, with total concentration ranging from 35 to 919 ng L−1. Treatment efficiency was on average 65 ± 28%, with wide variation between different DWTPs. The DWTP with the highest ∑CEC concentrations in raw water had the most efficient treatment procedure (average treatment efficiency 89%), whereas the DWTP with the lowest ∑177CEC concentration in the raw water had the lowest average treatment efficiency (2.3%). Suspect screening was performed for 500 compounds ranked high as chemicals of concern for drinking water, using a prioritisation tool (SusTool). Overall, 208 features of interest were discovered and three were confirmed with reference standards. There was co-variation between removal efficiency in DWTPs for the target compounds and the suspected features detected using suspect screening, implying that removal of known contaminants can be used to predict overall removal of potential CECs for drinking water production. Our results can be of high value for DWTPs around the globe in their planning for future treatment strategies to meet the increasing concern about human exposure to unknown CECs present in their drinking water.
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