title: [Study on the determination of pesticide residues in crops by ion-trap GC/MS/MS].
abstract: Ion-trap GC/MS/MS was evaluated for the multi-residue determination of pesticides in agricultural products. Matrices were extracted from samples (spinach, carrot, onion and brown rice) with acetone and submitted to gel permeation chromatography, followed by a clean-up step through a graphite carbon cartridge. Thirty-five pesticides were added to either matrix, and analyzed by GC/MS/MS. Detection limits of pesticides by GC/MS/MS was almost the same as those by GC/MS (SIM). Coefficients of variation of peak area in 5 measurements of each pesticide at 0.1 microgram/mL or 0.05 microgram/mL with or without matrices were mostly acceptable, though those of 20 pesticides out of 35 were higher than 10% at a concentration of 0.02 microgram/mL. It was indicated that matrix artifacts, which interfere with GC/MS-Scan analysis, could be eliminated in some cases by using GC/MS/MS.
authors.affiliation: Nichirei Corporation Quality Assurance Division: 9, Shinminato, Mihama-ku, Chiba-shi, Chiba 261-8545, Japan.
authors.forename: Kazuo
authors.initials: K
authors.lastname: Takeda
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Ishiguro
authors.forename: Rie
authors.initials: R
authors.lastname: Tanaka
authors.forename: Junichi
authors.initials: J
authors.lastname: Maruyama
authors.forename: Takashi
authors.initials: T
authors.lastname: Kasamatsu
authors.forename: Shin
authors.initials: S
authors.lastname: Okawa
authors.forename: Shinjiro
authors.initials: S
authors.lastname: Hori
mesh_terms: D018556:Crops, Agricultural / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D012275:Oryza / Q000737:chemistry; D010573:Pesticide Residues / Q000032:analysis*; D014675:Vegetables / Q000737:chemistry
chemical_list: D010573:Pesticide Residues