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Occurrence and behavior of antibiotics in water and sediments from the Huangpu River, Shanghai, China

Chen, K., Zhou, J.L.
Chemosphere 2014 v.95 pp. 604-612
Daphniidae, animals, aquatic ecosystems, drinking water, environmental assessment, farming systems, macrolides, molecular weight, nonpoint source pollution, risk assessment, rivers, sediments, sulfamethoxazole, tetracyclines, China
This study aims to determine the occurrence and behavior of five classes of 20 antibiotics in both water and sedimentary phases in the Huangpu River, which supplies drinking water to Shanghai City, China. Of the 20 antibiotics, sulfonamides showed the highest concentrations in water samples (34–859ngL−1) while tetracyclines (average concentration at 18μgkg−1 dry weight) and macrolides (12μgkg−1 dry weight) dominated in sediment samples. The spatial distribution of antibiotics showed that the main polluting sources into the river were animal farming sites and the tributaries downstream of the Yuanxie River. In addition, linear relationships between logKoc and logKow, and between logKoc and log molecular weight, were demonstrated, suggesting the importance of contaminant properties in inter-phase behavior. The environmental risk assessment revealed that some antibiotics, in particular sulfamethoxazole could cause medium damage to daphnid in the aquatic ecosystem.