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- Title
Determination of Quinclorac in Livestock Products by LC-MS/MS.
- Authors
Yutaro TAKEWAKI; Ryo OKABE; Satoru NEMOTO; Mitsutoshi AOYAGI
- Abstract
A liquid chromatography-tandem mass spectrometry (LC-MS/MS)-based method was developed for determining quinclorac in livestock products. Quinclorac was extracted from the samples using a solution of acetone and hydrochloric acid mixed in a 99 : 1 ratio. The crude extract was purified with ethyl acetate under basic conditions, followed by quinclorac extraction with ethyl acetate under acidic conditions and analysis using LC-MS/MS. The average recoveries of quinclorac from five livestock products (n=5) fortified at the maximum residue limits or 0.01 mg/kg ranged from 85.6 to 93.5%, with the precision of repeatability ranging from 1.7 to 6.8%. The quantification limit in this analytical method was 0.01 mg/kg. These results suggest that the developed method is useful for analyzing quinclorac in livestock products.
- Publication
Food Hygienic & Safety Science / Shokuhin Eiseigaku Zasshi, 2022, Vol 63, Issue 5, p177
- ISSN
0015-6426
- Publication type
Academic Journal
- DOI
10.3358/shokueishi.63.177