title: Trends in the occurrence of human and veterinary antibiotics in the sediments of the Yellow River, Hai River and Liao River in northern China.
abstract: The occurrence of four classes of 17 commonly used antibiotics (including fluoroquinolones, tetracycline, sulfonamides, and macrolides) was investigated in the sediments of the Yellow River, Hai River and Liao River in northern China by using rapid resolution liquid chromatography-tandem mass spectrometry. Higher concentrations were detected for most antibiotics in the sediments of the Hai River than in the sediments of the other rivers. Norfloxacin, ofloxacin, ciprofloxacin and oxytetracycline in the three rivers were most frequently detected with concentrations up to 5770, 1290, 653 and 652 ng/g, respectively. High frequencies and concentrations of the detected antibiotics were often found in the downstream of large cities and areas influenced by feedlot and fish ponds. Good fitted linear regression equations between antibiotic concentration and sediment physicochemical properties (TOC, texture and pH) were also found, indicating that sediment properties are important factors influencing the distribution of antibiotics in the sediment of rivers.
authors.affiliation: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
authors.forename: Li-Jun
authors.initials: LJ
authors.lastname: Zhou
authors.forename: Guang-Guo
authors.initials: GG
authors.lastname: Ying
authors.forename: Jian-Liang
authors.initials: JL
authors.lastname: Zhao
authors.forename: Ji-Feng
authors.initials: JF
authors.lastname: Yang
authors.forename: Li
authors.initials: L
authors.lastname: Wang
authors.forename: Bin
authors.initials: B
authors.lastname: Yang
authors.forename: Shan
authors.initials: S
authors.lastname: Liu
mesh_terms: D000900:Anti-Bacterial Agents / Q000032:analysis*; D002681:China; D019015:Geologic Sediments / Q000032:analysis*; D006801:Humans; D019155:Veterinary Drugs / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014876:Water Pollution
chemical_list: D000900:Anti-Bacterial Agents; D019155:Veterinary Drugs; D014874:Water Pollutants, Chemical