Efficient detection and assessment of human exposure to trace antibiotic residues in drinking water

WATER RESEARCH

卷:175

Article

Ben, Yujie^1,2,3  Hu, Min^1,2  Zhang, Xingyue^1,2  Wu, Shimin⁴  Wong, Ming Hung^1,2,5  Wang, Mingyu³  Andrews, Charles B.^1,2  Zheng, Chunmiao^1,2 

[1] Southern Univ Sci & Technol, Sch Environm Sci & Engn, Guangdong Prov Key Lab Soil & Groundwater Pollut, Shenzhen 518055, Peoples R China

[2] Southern Univ Sci & Technol, Sch Environm Sci & Engn, State Environm Protect Key Lab Integrated Surface, Shenzhen 518055, Guangdong, Peoples R China

[3] Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China

[4] IER Environm Protect Engn Technol Co Ltd, Shenzhen 518071, Peoples R China

[5] Educ Univ Hong Kong, Dept Sci & Environm Studies, CHEER, Tai Po, Hong Kong, Peoples R China

关键词: Antibiotic residues;    Drinking water;    Exposure assessment;    Microbiological toxicity;    Risk assessment;   

DOI  :  10.1016/j.watres.2020.115699

来源: Elsevier

【 摘 要 】

Human exposure to antibiotic residues in drinking water has not been well evaluated. This study is the first attempt to simultaneously and efficiently identify and quantify 92 antibiotic residues in filtered tap water (multistage filtration at the tap) (n = 36) collected from 10 areas of a large city in southern China, 10 Chinese brands of bottled/barreled water (n = 30) and six foreign brands of bottled water (n = 18) obtained from the Chinese market. The average and median concentrations of all the detected antibiotic compounds was 182 and 92 ng/L in filtered tap water, 180 and 105 ng/L in Chinese brands of bottled/barreled water, and 666 and 146 ng/L in foreign brands of bottled water, respectively. A total of 58 antibiotics were detected in the filtered tap water, and 45 and 36 antibiotics were detected in the Chinese and foreign brands of bottled water, respectively. More types of antibiotics were detected in Chinese brands of bottled water than in the other bottled waters. In addition, Chinese waters had high roxithromycin concentrations, while the foreign brands of bottled water had high concentrations of dicloxacillin. The average and median values of the estimated overall daily intake of all the detected antibiotics were 4.3 and 2.3 ng/kg/day when only filtered tap water was drunk, 4.0 and 2.5 ng/kg/day when Chinese brands of bottled water was drunk, and 16.0 and 4.9 ng/kg/day when foreign brands of bottled water was drunk. Further study is needed to develop a more comprehensive estimation of human exposure to antibiotic residues in the environment and a more in-depth understanding of the potential hazard of ingested antibiotic residues to the human microbiome. (C) 2020 The Authors. Published by Elsevier Ltd.

【 授权许可】

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