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Rapid Simultaneous Determination of 43 Pesticide Residues in by Gas Chromatography Mass Spectrometry

Overview
Journal Int J Anal Chem
Publisher Wiley
Specialty Chemistry
Date 2021 Dec 23
PMID 34938338
Citations 2
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Abstract

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.

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