title: The behavior of tetracyclines and their degradation products during swine manure composting.
abstract: The purposes of this study were to investigate the behavior of three tetracyclines including chlortetracycline (CTC), oxytetracycline (OTC) and tetracycline (TC) and their degradation products in a pilot scale swine manure composting, and also to study the degradation kinetics of CTC, OTC and TC. During the pilot scale composting, CTC, OTC and TC were degraded by 74%, 92% and 70%, respectively. Several degradation products were found like 4-epitetracycline (ETC), 4-epioxytetracycline (EOTC), 4-epichlortetracycline (ECTC), demeclocycline (DMCTC) and anhydrotetracycline (ATC). Both the simple and the adjusted first-order kinetic models successfully fit the degradation process of CTC, OTC and TC during the composting, but the adjusted first-order kinetic model fit much better with the calculated half-lives of 8.2, 1.1 and 10.0 days, respectively.
authors: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, PR China.
authors: Xiaofeng
authors: X
authors: Wu
authors: Yuansong
authors: Y
authors: Wei
authors: Jiaxi
authors: J
authors: Zheng
authors: Xin
authors: X
authors: Zhao
authors: Weike
authors: W
authors: Zhong
mesh_terms: D000818:Animals; D002853:Chromatography, Liquid; D004350:Drug Residues; D057230:Limit of Detection; D008372:Manure; D010865:Pilot Projects; D015203:Reproducibility of Results; D012987:Soil; D013552:Swine; D053719:Tandem Mass Spectrometry; D013754:Tetracyclines / Q000737:chemistry*
chemical_list: D008372:Manure; D012987:Soil; D013754:Tetracyclines