Determination of 20 Neonicotinoid Insecticides and Their Metabolites in Infant Foods by a Modified QuEChERS Method Combined with HPLC-MS/MS. (5th October 2022)

• Record Type: Journal Article
• Authors: Guo, Liqiang; Li, Kai; Zhang, Jinling; Tian, Guoning; Wang, Ke; Li, Yajing
• Other Names: Millet Maurice Academic Editor.
• Is Part Of: Journal of chemistry. Volume 2022(2022)
• Publication Date: 2022-10-05
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1155/2022/8092763
• Languages: English
• ISSNs: 2090-9063

Abstract

Abstract : A rapid, effective, and reliable method for the simultaneous detection of 20 neonicotinoids and their metabolites in infant foods has been developed using liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). To improve the accuracy and precision of the method, different extraction solvents, extraction methods, and adsorbents were evaluated to achieve a better recovery and clean-up effect. Under optimized conditions, the samples were extracted with acetic acid acidified acetonitrile/ethyl acetate by ultrasonication, and then were cleaned with reduced graphene oxide@Fe3 O4 (rGO@Fe3 O4 ) and primary and secondary amine (PSA) through a QuEChERS step. A matrix-matched calibration method was applied for quantification. Relative standard deviations were all <15% for intraday and interday precision. The values of limit of detection and limit of quantification were ranging from 0.02–0.35 μ g·kg −1 and 0.1–1.0 μ g·kg −1, respectively. The presented method was applied to the analysis of real samples.