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Preliminary studies on occurrence of monensin antibiotic in Bosque River Watershed

Journal of Environmental Sciences 2013年第2期25卷 268-273页

作者： Sudarshan Kurwadkar Victoria Sicking Barry Lambert Anne McFarland forrest mitchell Environmental Engineering Department of Engineering and PhysicsBox T-0390Tarleton State UniversityStephenvilleTX 76402USA Environmental Engineering Program Department of Engineering and PhysicsTarleton State UniversityStephenvilleTX 76402USA Department of Animal Sciences Box T-0070Tarleton State UniversityStephenvilleTX 76402USA Texas Institute for Applied Environmental Research Box T-0410Tarleton State UniversityStephenvilleTX 76402USA Texas A&M AgriLife Research 1229 N.US Hwy 281StephenvilleTX 76401USA

Water quality impact due to excessive nutrients has been extensively studied. In recent years, however, micro-pollutants such as pharmaceuticals and hormonal products used in animal agriculture have added an additional impact to overall water quality. Pharmaceuticals used in the poultry, swine, beef, and dairy industries have been detected in various environmental matrices such as, soil, groundwater and surface water. In this study, 26 surface water samples were collected throughout the Bosque River Watershed （BRW） with samples representing a range of land use conditions and locations of major dairy operations. Samples were analyzed using commercially available Enzyme-Linked Immunosorbent Assay test. Of the 26 samples, three samples consistently tested positive for monensin antibiotic with concentration ranging from 0.30 to 3.41 μg/L. These three samples were collected from sites that received varying amount of agriculture wastes （11.7% to 31.3%） and located downstream from sites associated with moderate levels of animal agriculture. The preliminary results suggest that there is a potential for monensin occurrence in the BRW, although initial findings indicate only very low levels.

关键词： ELISA ionophore monensin antibiotic dairy waste emerging pollutants pharmaceuticals

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