One-step integrated sample pretreatment technique by gas-liquid microextraction (GLME) to determine multi-class pesticide residues in plant-derived foods. (15th January 2022)

• Record Type: Journal Article
• Authors: Jin, Xiangzi; Kaw, Han Yeong; Liu, Yunan; Zhao, Jinhua; Piao, Xiangfan; Jin, Dongri; He, Miao; Yan, Xiu-Ping; Zhou, John L.; Li, Donghao
• Is Part Of: Food chemistry. Volume 367(2022)
• Publication Date: 2022-01-15
• Subjects: Multi-residue methods (MRMs) -- Fruits -- Vegetables -- Honey -- Insecticides -- Herbicides; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2021.130774
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlight: Multi-class pesticides were simultaneously detected within single step by GLME. The analytical performance of GLME was verified in apple, orange, honey and leek. Matrix effects of 47 pesticides were equivalent or better than the QuEChERS method. 5 min of pretreatment time by GLME is proved feasible for in-situ analysis. Abstract: Gas-liquid microextraction technique (GLME) has been integrated with dispersive solid phase extraction to establish a one-step sample pretreatment approach for rapid analysis of multi-class pesticides in different plant-derived foods. A 50 μL of organic solvent plus 40 mg of PSA were required throughout the 5-minute pretreatment procedure. Good trueness (recoveries of 67.2 – 105.4%) and precision (RSD ≤ 18.9%) were demonstrated by the one-step GLME method, with MLOQs ranged from 0.001 to 0.011 mg kg −1 . As high as 93.6% pesticides experienced low matrix effect through this method, and the overall matrix effects (ME%) were generally better or comparable to QuEChERS. This method successfully quantified 2-phenylphenol, quintozene, bifenthrin and permethrin in the range of 0.001 – 0.008 mg kg −1 in real food samples. The multiresidue analysis feature of GLME has been validated, which displays further potential for on-site determination of organic pollutants in order to safeguard food safety and human health.