Journal
ENVIRONMENTAL POLLUTION
Volume 158, Issue 5, Pages 1444-1450Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2009.12.034
Keywords
Antibiotics; Solid-phase extraction (SPE); Liquid chromatography/electrospray ionization-tandem mass spectrometry (LC/ESI-MS/MS); Three Gorge Reservoir; China
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Funding
- National Natural Science Foundation of China [30671727, 50804049]
- Chinese National Program for Key ST Project [2003BA869C]
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Sewage samples from 4 hospitals, 1 nursery, 1 slaughter house, 1 wastewater treatment plant and 5 source water samples of Chongqing region of Three Gorge Reservoir were analyzed for macrolide, lincosamide, trimethoprim, fluorouinolone, sulfonamide and tetracycline antibiotics by online solid-phase extraction and liquid chromatography-tandem mass spectrometry. Results showed that the concentration of ofloxacin (OFX) in hospital was the highest among all water environments ranged from 1.660 mu g/L to 4.240 mu g/L and norfloxacin (NOR, 0.136-1.620 mu g/L), ciproflaxacin (CIP, ranged from 0.011 mu g/L to 0.136 mu g/L), trimethoprim (IMP, 0.061-0.174 mu g/L) were commonly detected. Removal range of antibiotics in the wastewater treatment plant was 18-100% and the removal ratio of tylosin, oxytetracycline and tetracycline were 100%. Relatively higher removal efficiencies were observed for tylosin (TYL), oxytetracycline (OXY) and tetracycline (TET)(100%), while lower removal efficiencies were observed for Trimethoprim (IMP, 1%), Epi-iso-chlorotetracycline (EICIC, 18%) and Erythromycin-H2O (ERY-H2O, 24%). Antibiotics were removed more efficiently in primary treatment compared with those in secondary treatment. (C) 2009 Elsevier Ltd. All rights reserved.
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