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Occurrence of ectoparasiticides in Australian beef cattle feedlot wastes

Coleman, Heather, Trinh, Trang, Le-Minh, Nhat, Klein, Marcus, Roser, David J., Tucker, Robyn W., Stuetz, Richard M., Peters, Gregory and Khan, Stuart J. (2013) Occurrence of ectoparasiticides in Australian beef cattle feedlot wastes. Environmental Pollution, 174 . pp. 265-272. [Journal article]

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URL: http://dx.doi.org/10.1016/j.envpol.2012.11.018

DOI: doi:10.1016/j.envpol.2012.11.018

Abstract

A liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed for the simultaneous analysis of 6 ectoparasiticides – 2 synthetic pyrethroids (deltamethrin, cypermethrin) and 4 macrocyclic lactones (abamectin, doramectin, ivermectin and eprinomectin) in biosolids. The method was used to investigate the occurrence of these ectoparasiticides in beef cattle feedlot wastes in Australia from 5 commercial feedlot operations which employ varying waste management practices. Deltamethrin and cypermethrin were not detected in any of the samples while abamectin, ivermectin, doramectin and eprinomectin were detected in some of the samples with concentrations ranging from 1 to 36 μg/kg dry weight (d.w.) freeze dried feedlot waste. Levels of macrocyclic lactones detected in the feedlot wastes varied and were dependent on sample type. The effect of seasonal variations and waste management practices were also investigated in this study.

Item Type:Journal article
Keywords:Macrocyclic lactones; Pyrethroids; Analysis; LC-MS/MS; Feedlot waste
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:34971
Deposited By: Dr Heather Coleman
Deposited On:19 Aug 2016 13:45
Last Modified:17 Oct 2017 16:24

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