Journal
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
Volume 879, Issue 1, Pages 117-122Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jchromb.2010.11.008
Keywords
Neonicotinoids; Insecticides; Bovine muscle and liver; Pressurized solvent extraction; LC-MS/MS
Funding
- China National Science and Technology Pillar Program [2009BADB7B05]
- Program for Cheung Kong Scholars and Innovative Research Team in University of China [IRT0866]
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A rapid, sensitive, and environmental-friendly method has been developed for the simultaneous determination of seven neonicotinoid insecticides residues in bovine muscle and liver. The sample preparation procedure was based on a high automated pressurized solvent extraction (PSE) combined with solid-phase extraction (SPE) clean-up. The target compounds were identified and quantitatively determined by liquid chromatography coupled with electrospray ionization tandem mass spectrometry (LC-ESI-MS/MS) operated in multiple reaction monitoring mode. Average recoveries of the seven analytes from fortified samples ranged between 83.2% and 101.9%, with relative standard deviations (RSDs) lower than 10.8%. The limits of detection (LODs) and quantification (LOQs) for neonicotinoids were in the ranges of 0.8-1.5 mu g kg(-1) and 2.5-5.0 mu g kg(-1), respectively. This validated method was successively applied to the determination of neonicotinoid insecticides in real samples from markets. (C) 2010 Elsevier B.V. All rights reserved.
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