Journal
FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT
Volume 31, Issue 11, Pages 1879-1885Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/19440049.2014.961176
Keywords
residues; QuEChERS; wheat; halosulfuron-methyl; LC-MS/MS; dissipation
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A sensitive and rapid analytical method based on QuEChERS (quick, easy, cheap, effective, rugged and safe) sample preparation and LC-MS/MS detection was developed for the analysis of halosulfuron-methyl residues in wheat. The recoveries of halosulfuron-methyl in both the wheat plant and grain ranged from 87% to 119% and from 75% to 97%, respectively, with relative standard deviations (RSDs) of 3-9%. The limit of quantification (LOQ) was 0.005mgkg(-1) for wheat plant and 0.001mgkg(-1) for wheat grain. The half-life of halosulfuron-methyl in the wheat plant was 0.9-9.5 days. The terminal residue levels of halosulfuron-methyl in wheat grain were below 0.01mgkg(-1) at harvest.
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