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Spatial and seasonal distribution of selected antibiotics in surface waters of the Pearl Rivers, China

Spatial and seasonal distribution of selected antibiotics in surface waters of the Pearl Rivers,... The distribution and occurrence of 15 antibiotics in surface water of the Pearl River System (Liuxi River, Shijing River and Zhujiang River) and effluents of four wastewater treatment plants (WWTPs) were investigated in two sampling events representing wet season and dry season by using rapid resolution liquid chromatography–electrospray tandem mass spectrometry (RRLC-MS/MS) in positive ionization mode. Only eight antibiotics (sulfadiazine, sulfapyridine, sulfamethazine, sulfamethoxazole, trimethoprim, roxithromycin, erythromycin-H2O and norfloxacin) were detected in the water samples of the three rivers and the effluents. The detection frequencies and levels of antibiotics in the dry season were higher than those in the wet season. This could be attributed to the dilution effects in the wet season and relatively lower temperature in the dry season under which antibiotics could persist for a longer period. The levels of the detected antibiotics in different sites are generally in a decreasing order as follows: Shijing River ⩾WWTP effluent ⩾Zhujiang River ⩾ Liuxi River. Risk assessment based on the calculated risk quotients showed that only erythromycin-H2O and roxithromycin detected in the Pearl Rivers might have adverse effects on aquatic organisms. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png "Journal of Environmental Science and Health, Part B" Taylor & Francis

Spatial and seasonal distribution of selected antibiotics in surface waters of the Pearl Rivers, China

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References (48)

Publisher
Taylor & Francis
Copyright
Copyright Taylor & Francis Group, LLC
ISSN
1532-4109
eISSN
0360-1234
DOI
10.1080/03601234.2011.540540
pmid
21462055
Publisher site
See Article on Publisher Site

Abstract

The distribution and occurrence of 15 antibiotics in surface water of the Pearl River System (Liuxi River, Shijing River and Zhujiang River) and effluents of four wastewater treatment plants (WWTPs) were investigated in two sampling events representing wet season and dry season by using rapid resolution liquid chromatography–electrospray tandem mass spectrometry (RRLC-MS/MS) in positive ionization mode. Only eight antibiotics (sulfadiazine, sulfapyridine, sulfamethazine, sulfamethoxazole, trimethoprim, roxithromycin, erythromycin-H2O and norfloxacin) were detected in the water samples of the three rivers and the effluents. The detection frequencies and levels of antibiotics in the dry season were higher than those in the wet season. This could be attributed to the dilution effects in the wet season and relatively lower temperature in the dry season under which antibiotics could persist for a longer period. The levels of the detected antibiotics in different sites are generally in a decreasing order as follows: Shijing River ⩾WWTP effluent ⩾Zhujiang River ⩾ Liuxi River. Risk assessment based on the calculated risk quotients showed that only erythromycin-H2O and roxithromycin detected in the Pearl Rivers might have adverse effects on aquatic organisms.

Journal

"Journal of Environmental Science and Health, Part B"Taylor & Francis

Published: Mar 7, 2011

Keywords: Antibiotics; surface water; risk assessment; Pearl Rivers

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