Determination of Rganophosphorus Pesticides in Strawberry by GC-SPE
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Abstract:
A gas chromatography method was established for determination of 13 organophosphorus pesticides in strawberry. The organophosphorus pesticides were homogenated, extracted by acetonitrile and purified by solid phase extraction. The sample solution was analyzed by gas chromatography with Agilent-1701. Good separation for 13 organophosphorus pesticides was achieved using the established method, with correlation coefficients above 0.995. The detection limit was 0.0012~0.0082 mg/kg. The average recoveries of the 13 organophosphorus pesticides were 90.6~105.3% with RSDs of 1.28~6.30%. This method could meet the requirements for the organophosphorus pesticides in strawberry.
