Determination of Xinjunan pesticide residue in foodstuffs of plant origin by a modified QuEChERS method and ultra performance liquid chromatography-tandem mass spectrometry. (November 2021)

• Record Type: Journal Article
• Authors: Han, Chao; Hu, Beizhen; Chen, Shubing; Wang, Nan; Hou, Jianbo; Jin, Na; Shen, Yan
• Is Part Of: Lebensmittel-Wissenschaft + Technologie =. Volume 151(2021)
• Publication Date: 2021-11
• Subjects: Xinjunan -- UPLC-MS/MS -- Modified QuEChERS -- Foodstuffs of plant origin; Food industry and trade -- Periodicals; Food -- Composition -- Periodicals; Microbiology -- Periodicals; Nutrition -- Periodicals; 664.005
• DOI: 10.1016/j.lwt.2021.112101
• Languages: English
• ISSNs: 0023-6438

Abstract

Abstract: In this study, the determination of Xinjunan pesticide residue in apple, cottonseed, pepper, tomato, grape and pear by ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was established. The samples were purified by a modified QuEChERS method. The analysis was performed by UPLC-MS/MS in multiple reaction monitoring (MRM) mode. Acetonitrile and 1.0 mmol L −1 ammonium acetate (containing 0.1% formic acid) were used as the mobile phases. The external standard method was used for quantification. The average recoveries were 75.6–106.2% with an RSD ≤8.8%. The limits of quantification (LOQs) were 2.0 μg/kg for apple, pepper, tomato, grape and pear and 10.0 μg/kg for cottonseed. The proposed method is fast, sensitive, simple, and accurate and could be used for the quantification of Xinjunan pesticide residue in foodstuffs of plant origin. Graphical abstract: Image 1 Highlights: First determination of Xinjunan residue in food by UPLC-MS/MS. The accuracy of the results is based on MRM mode. The samples were purified by a modified QuEChERS method. The structure analysis of Xinjunan was carried out for the first time.