title: [Occurrence and fate of typical antibiotics in a wastewater treatment plant in Southwest China].
abstract: The occurrence and fate of ten antibiotics were investigated in a municipal wastewater treatment plant in Southwest China. Antibiotics were identified and quantified using high performance liquid chromatography/tandem mass spectrometry after solid-phase extraction. The results showed that 10 antibiotics were present in wastewater, in concentrations ranging from ng L -1 to microg L-1. All of the target antibiotics were also detected in sludge with concentrations ranging from (0.92 +/-0.18) to (466.76 +/-77.46) ng.g-1, with azithromycin having the highest concentration (466.76 ng.g-1 dry weight). Mass balance analysis showed that biotransformation/ biodegradation was the main removal mechanism for the selected antibiotics, and sorption onto sludge was a relevant removal pathway for quinolone antibiotics, and azithromycin, which accounted for 9. 35% to 26. 96% of the initial loadings.
authors: Xiu-Mei
authors: XM
authors: Gan
authors: Qing
authors: Q
authors: Yan
authors: Xu
authors: X
authors: Gao
authors: Yi-Xin
authors: YX
authors: Zhang
authors: Cheng-Fang
authors: CF
authors: Zi
authors: Xu-Ya
authors: XY
authors: Peng
authors: Jin-Song
authors: JS
authors: Guo
mesh_terms: D000900:Anti-Bacterial Agents / Q000032:analysis*; D001673:Biodegradation, Environmental; D002681:China; D002851:Chromatography, High Pressure Liquid; D004350:Drug Residues / Q000032:analysis; D012722:Sewage / Q000737:chemistry; D052616:Solid Phase Extraction; D053719:Tandem Mass Spectrometry; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D000900:Anti-Bacterial Agents; D012722:Sewage; D062065:Wastewater; D014874:Water Pollutants, Chemical