Rapid Simultaneous Determination of 43 Pesticide Residues in by Gas Chromatography Mass Spectrometry
Overview
Affiliations
A simple, fast, and reliable method was established for simultaneous determination of 43 pesticides in . The samples were prepared using solid-phase extraction (SPE) method. Pesticides were extracted from using acetonitrile, cleaned with Pesticarb/NH, and eluted by mixed solvents of acetonitrile and toluene (3 : 1, v/v). Selected pesticides were identified using DB-35MS capillary column and detected by gas chromatography mass spectrometry. Samples were quantified by external standard method. Recoveries for the majority of pesticides at spike levels of 0.2, 0.5, and 1 mg kg ranged between 70 and 120% (except for Chlorothalonil, Thiamethoxam, and Dicofol), and the relative standard deviations (RSDs = 6) were 1.32%-13.91%. Limits of detection (LODs) were 0.0011-0.0135 mg kg, whereas limits of quantification (LOQs) were 0.0038-0.0451 mg kg. The satisfactory accuracy and precision, in combination with a good separation and few interferences, have demonstrated the strong potential of this technique for its application in analysis.
Residual Change of Four Pesticides in the Processing of and Associated Factors.
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PMID: 37764451 PMC: 10535192. DOI: 10.3390/molecules28186675.
Wang Y, Meng Z, Su C, Fan S, Li Y, Liu H J Anal Methods Chem. 2022; 2022:7684432.
PMID: 35757318 PMC: 9217587. DOI: 10.1155/2022/7684432.