title: Antibiotics in the surface water of the Yangtze Estuary: occurrence, distribution and risk assessment.
abstract: The occurrence and distribution of five groups of antibiotics were investigated in the surface water of Yangtze Estuary over four seasons. Of the 20 antibiotics, only sulfamerazine was not detected at all sampling sites, indicating widespread occurrence of antibiotic residues in the study area. Detection frequencies and concentrations of antibiotics were generally higher in January, indicating that low flow conditions and low temperature might enhance the persistence of antibiotics in water. Antibiotic levels varied with location, with the highest concentrations being observed around river discharge and sewage outfall. Furthermore, a positive correlation between total antibiotic and DOC concentrations revealed the significant role played by DOC. Risk assessment based on single compound exposure showed that sulfapyridine and sulfamethoxazole could cause medium risk to daphnid in the Yangtze Estuary.
authors: State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China.
authors: Caixia
authors: C
authors: Yan
authors: Yi
authors: Y
authors: Yang
authors: Junliang
authors: J
authors: Zhou
authors: Min
authors: M
authors: Liu
authors: Minghua
authors: M
authors: Nie
authors: Hao
authors: H
authors: Shi
authors: Lijun
authors: L
authors: Gu
mesh_terms: D000900:Anti-Bacterial Agents / Q000032:analysis*; D004784:Environmental Monitoring; D063366:Estuaries; D045483:Rivers / Q000737:chemistry*; D012623:Seawater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data
chemical_list: D000900:Anti-Bacterial Agents; D014874:Water Pollutants, Chemical