title: The distribution and partitioning of common antibiotics in water and sediment of the Pearl River Estuary, South China.
abstract: Antibiotics released into the aquatic environment play an important role in the spread of antibiotic resistance. In the Pearl River Estuary (PRE) and the coastal zone, the concentrations of antibiotics decreased from the Pearl River to the estuary, suggesting that antibiotics primarily originated from river tributaries and terrigenous sources. Within the PRE area, the concentrations of antibiotics in water were higher in the west coast than the east side, reflecting the high density of anthropogenic activities and hydraulic conditions along the west riverbank. Seasonal variations were also observed for most of detected antibiotics in water. The pseudo-partitioning coefficient of norfloxacin had a good correlation with the TOC content of sediments, as did erythromycin-H2O with the pH of water. The results suggest that environmental conditions can significantly affect the distribution of antibiotics between water and sediment.
authors.affiliation: State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
authors.forename: Ximei
authors.initials: X
authors.lastname: Liang
authors.forename: Baowei
authors.initials: B
authors.lastname: Chen
authors.forename: Xiangping
authors.initials: X
authors.lastname: Nie
authors.forename: Zhen
authors.initials: Z
authors.lastname: Shi
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Huang
authors.forename: Xiangdong
authors.initials: X
authors.lastname: Li
mesh_terms: D000900:Anti-Bacterial Agents / Q000032:analysis* / Q000737:chemistry*; D002681:China; D019015:Geologic Sediments / Q000737:chemistry*; D045483:Rivers / Q000737:chemistry*; D012621:Seasons; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry*
chemical_list: D000900:Anti-Bacterial Agents; D014874:Water Pollutants, Chemical; D014867:Water
keywords: Antibiotics; Partitioning; Pearl River Estuary; Sediment; South China; Water