Simultaneous Determination of 15 Multiresidue Organophosphorous Pesticides in Camellia Oil by MSPD-GC–MS
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A one step method based on matrix solid-phase dispersion for simultaneous determination of 15 organophosphorous pesticide residues in camellia oil was developed. The sample preparation could finish in 5 min without extraction procedure, and then analyzed by gas chromatograph-mass spectrometer. Average recoveries ranged between 73.2 % and 108.6 %, with relative standard deviation values (intra-day and inter-day) lower than 16 % at two concentration levels. The method limit of detection was 5 ng/g, which could meet the regulatory maximum residue limits for the pesticides.
KeywordsPesticide residue Camellia oil MSPD GC–MS
This work was supported by the Applied Research Project in the Public Interest of Zhejiang Province (2012C22090) and Special Fund for Forestry Scientific Research in the Public Interest (201204414, 201304705).
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