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| National survey of phthalate metabolites in drinking source water of 23 cities in China |
| DING Meng-yu1, KANG Qi-yue1, ZHANG Shi-yi1, ZHAO Fan-rong1, ZHANG Hai-feng2, YANG Min2, HU Jian-ying1 |
1. Laboratory for Earth Surface Proess, Ministy of Education, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China;
2. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 |
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Abstract Eight metabolites of 5 PAEs were determined in 141 drinking source water samples from 90 drinking water supply plants of 23 cities in China using UPLC-MS/MS method. MPAEs were detected in all drinking source water samples, and the average concentration of mono-n-butyl phthalate (MnBP) was the highest (74.7ng/L) among target MPAEs. The concentrations of monoethyl phthalate (MEP), mono-iso-butyl phthalate (MiBP) and MnBP in source water were significantly correlated with those of diethyl phthalate (DEP), di-iso-butyl phthalate (DiBP) and di-n-butyl phthalate (DnBP), respectively, suggesting common source for MPAEs and their corresponding PAEs. The percentage of secondary metabolites relative to∑DEHP (total concentrations of primary and secondary metabolites of DEHP) (4.0% ±5.6%) in source water was comparable to that from the microbiological degradation of DEHP in aqueous environment, suggesting that these metabolites in drinking source water were mainly from the microbiological degradation of PAEs in aqueous environment.
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Received: 10 March 2019
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