title: Determination of halosulfuron-methyl residues and dissipation in wheat by QuEChERS and LC-MS/MS.
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.
authors.affiliation: a College of Science, China Agricultural University , Beijing , China.
authors.forename: Mengyuan
authors.initials: M
authors.lastname: Feng
authors.forename: Wenxi
authors.initials: W
authors.lastname: Li
authors.forename: Xianghong
authors.initials: X
authors.lastname: Hao
authors.forename: Lijun
authors.initials: L
authors.lastname: Han
mesh_terms: D002681:China; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D005506:Food Contamination / Q000032:analysis*; D006207:Half-Life; D006540:Herbicides / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D013453:Sulfonylurea Compounds / Q000032:analysis*; D053719:Tandem Mass Spectrometry / Q000379:methods*; D014908:Triticum
chemical_list: D006540:Herbicides; D010573:Pesticide Residues; D013453:Sulfonylurea Compounds; C532033:halosulfuron methyl
keywords: LC-MS/MS; QuEChERS; dissipation; halosulfuron-methyl; residues; wheat