Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6357367 | Marine Pollution Bulletin | 2015 | 9 Pages |
Abstract
In this study, the occurrence and spatial distribution of 38 antibiotics in surface water and sediment samples of the Hailing Bay region, South China Sea, were investigated. Twenty-one, 16 and 15 of 38 antibiotics were detected with the concentrations ranging from <0.08 (clarithromycin) to 15,163Â ng/L (oxytetracycline), 2.12 (methacycline) to 1318Â ng/L (erythromycin-H2O), <1.95 (ciprofloxacin) to 184Â ng/g (chlortetracycline) in the seawater, discharged effluent and sediment samples, respectively. The concentrations of antibiotics in the water phase were correlated positively with chemical oxygen demand and nitrate. The source analysis indicated that untreated domestic sewage was the primary source of antibiotics in the study region. Fluoroquinolones showed strong sorption capacity onto sediments due to their high pseudo-partitioning coefficients. Risk assessment indicated that oxytetracycline, norfloxacin and erythromycin-H2O posed high risks to aquatic organisms.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Oceanography
Authors
Hui Chen, Shan Liu, Xiang-Rong Xu, Guang-Jie Zhou, Shuang-Shuang Liu, Wei-Zhong Yue, Kai-Feng Sun, Guang-Guo Ying,