Abstract
A method for the analysis of 12 semi-volatile pesticide residues in vegetables was developed by miniaturized thermal-assisted purge-and-trap coupled with ultra high pressure liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). Under the optimized conditions, the sample preparation could be completed within 10 min. The linear relationships of the 12 semi-volatile pesticide residues were good within their corresponding concentration ranges. The correlation coefficients were in range of 0.9918-0.9997. The limits of detection and limits of quantification were in range of 0.3-1.3 μg/kg and 1.0-4.3 μg/kg, respectively. The recoveries ranged from 80.0% to 120.0%, with intra-day and inter-day RSDs of less than 10%. This proposed method is quick and simple, and is suitable for the simultaneous and rapid analysis of semi-volatile pesticide residues in vegetables.
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