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  • Title: [Determination of 14 pesticide residues in honey by ultra high performance liquid chromatography-high resolution mass spectrometry].
    Author: Zhang S, Chen D, Zhao Y.
    Journal: Wei Sheng Yan Jiu; 2015 May; 44(3):422-6, 430. PubMed ID: 26137622.
    Abstract:
    OBJECTIVE: To establish a method for simultaneous determination of 14 pesticide residues in honey by ultra high performance liquid chromatography-high resolution mass spectrometry ( UPLC-HRMS). METHODS: Honey samples were extracted with 1% formic acid in acetonitrile, and the extracts were cleaned up with dispersive solid phase extraction (d-SPE ) using the mixture of PSA and C18 powder as sorbents. The extract components were separated on an Accucore aQ C18 column (2.6 μm, 2.1 mm x 150 mm) by gradient elution. The qualitative and quantitative analyses were operated under Full Scan/ddms2 mode by high resolution mass spectrometry. RESULTS: The response of each pesticides showed a good linearity with the correlation coefficient not less than 0.998. The limits of quantitation ( LOQs, S/N ≥ 10) for the 14 pesticides in honey were from 0.6 to 6 μg/kg. The recovery results with spike blank honey samples at the levels of LOQs, 15 and 30 μg/kg were satisfied with average recovery rates of 80.3% -112.7% and the RSDs of 0.4% -7.1%. CONCLUSION: The proposed method was suitable for the rapid screening and quantitative analysis of pesticide residues in honey.
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