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Occurrence of ectoparasiticides in Australian beef cattle feedlot wastes

H. M. Coleman ; T. Trinh ; N. Le-Minh ; M. Klein ; D. J. Roser ; R. W. Tucker ; R. M. Stuetz ; Gregory Peters (Institutionen för kemi- och bioteknik, Kemisk miljövetenskap) ; S. J. Khan
Environmental Pollution (0269-7491). Vol. 174 (2013), p. 265-272.
[Artikel, refereegranskad vetenskaplig]

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 mu g/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.

Nyckelord: Macrocyclic lactones, Pyrethroids, Analysis, LC-MS/MS, Feedlot waste, chromatography mass-spectrometry, induced fluorometry derivatization, performance liquid-chromatography, solid-phase extraction, pyrethroid, insecticides, fluorescence detection, chemical-ionization, sheep feces, synthetic pyrethroids, environmental-impac

Denna post skapades 2013-03-19.
CPL Pubid: 174814


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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Kemisk miljövetenskap (2005-2014)


Geovetenskap och miljövetenskap

Chalmers infrastruktur