title: [Occurrence and seasonal changes of antibiotics in the Victoria Harbour and the Pearl River, South China].
abstract: The occurrence and seasonal changes of antibiotics in the Victoria Harbour and the Pearl River were studied using high-performance liquid chromatography-electrospray ionization tandem mass spectrometry with multiple reaction monitoring (MRM). The results showed that the concentrations of antibiotics were mainly below the limit of quantification (LOQ) in the ambient marine water of Victoria Harbour. However, except for amoxicillin, all the target antibiotics were detected in the Pearl River during high (summer) and low (early spring) water seasons with the concentrations ranging from 13 to 69 ng x L(-1) and from 70 to 489 ng x L(-1), respectively. The concentrations of antibiotics in the Pearl River are all higher than that in America and other western developed countries, no matter in spring or summer. The concentrations of antibiotics showed sensitive daily changes in the high water season.
authors.affiliation: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China. whxu2002@163.com
authors.forename: Wei-hai
authors.initials: WH
authors.lastname: Xu
authors.forename: Gan
authors.initials: G
authors.lastname: Zhang
authors.forename: Shi-chun
authors.initials: SC
authors.lastname: Zou
authors.forename: Xiang-dong
authors.initials: XD
authors.lastname: Li
authors.forename: Yu-chun
authors.initials: YC
authors.lastname: Liu
mesh_terms: D000900:Anti-Bacterial Agents / Q000032:analysis*; D002681:China; D002851:Chromatography, High Pressure Liquid; D004784:Environmental Monitoring; D005618:Fresh Water / Q000032:analysis*; D006723:Hong Kong; D012621:Seasons; D012623:Seawater / Q000032:analysis*; D021241:Spectrometry, Mass, Electrospray Ionization; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D000900:Anti-Bacterial Agents; D014874:Water Pollutants, Chemical