title: Multiresidue method for determination of 88 pesticides in berry fruits using solid-phase extraction and gas chromatography-mass spectrometry: Determination of 88 pesticides in berries using SPE and GC-MS.
abstract: A method using solid phase extraction (SPE) cleanup followed by gas chromatography-mass spectrometry (GC-MS) has been established for quantitative determination of 88 pesticide residues in berry fruits including raspberry, strawberry, blueberry and grape. Based on an appraisal of the characteristics of GC-MS, validation experiments were conducted for 88 pesticides. In the method, solid-phase extraction was carried out using Envi-Carb cartridge coupled with NH(2)-LC cartridge with acetonitrile-toluene (3:1, v/v) as the eluted solvent. In the linear range of each pesticide, the correlation coefficient was R(2)⩾0.99. At the low, medium and high three fortification levels of 0.05-0.5mgkg(-1), recoveries fell within 63-137%. The relative standard deviation was between 1% and 19% for all 88 pesticides. Low limits of detection (0.006-0.05mgkg(-1)) and quantification (0.02-0.15mgkg(-1)) were readily achieved with this method for all tested pesticides.
authors.affiliation: Department of Food Sciences, School of Food Science and Engineering, Harbin Institute of Technology, 150090 Harbin, PR China; Key Laboratory of Agro-Product Quality and Safety, Institute of Quality Standard & Testing Technology for Agro-Product, Chinese Academy of Agricultural Sciences, 100081 Beijing, PR China. Electronic address: yangxin@hit.edu.cn.
authors.forename: X
authors.initials: X
authors.lastname: Yang
authors.forename: H
authors.initials: H
authors.lastname: Zhang
authors.forename: Y
authors.initials: Y
authors.lastname: Liu
authors.forename: J
authors.initials: J
authors.lastname: Wang
authors.forename: Y C
authors.initials: YC
authors.lastname: Zhang
authors.forename: A J
authors.initials: AJ
authors.lastname: Dong
authors.forename: H T
authors.initials: HT
authors.lastname: Zhao
authors.forename: C H
authors.initials: CH
authors.lastname: Sun
authors.forename: J
authors.initials: J
authors.lastname: Cui