Abstract
The suitability of gas chromatography with pulsed flame-photometric detection (GC–PFPD) for determination of 24 organophosphorus (OP) pesticides in vegetables has been assessed. Pesticides were extracted with dichloromethane and analyzed without cleanup. The performance of the method was fit for purpose; recovery was between 73 and 110% and precision was better than 15%. Calculated lower limits of detection were typically <0.01 mg kg−1, much lower than the maximum residue levels stipulated by European legislation. Three pesticides were detected in vegetable samples. Their presence was confirmed by GC with tandem mass spectrometric detection (GC–MS–MS).
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