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  • Title: Determination of halosulfuron-methyl residues and dissipation in wheat by QuEChERS and LC-MS/MS.
    Author: Feng M, Li W, Hao X, Han L.
    Journal: Food Addit Contam Part A Chem Anal Control Expo Risk Assess; 2014; 31(11):1879-85. PubMed ID: 25181482.
    Abstract:
    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 0.005 mg kg(-1) for wheat plant and 0.001 mg kg(-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 0.01 mg kg(-1) at harvest.
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