Disposable pipette extraction for the analysis of pesticides in fruit and vegetables using gas chromatography/mass spectrometry

作者：Guan Hongxia; Brewer William E^*; Garris Sherry T; Morgan Stephen L

来源：Journal of Chromatography A, 2010, 1217(12): 1867-1874.

DOI：10.1016/j.chroma.2010.01.047

• Disposable pipette extraction (DPX)
• Multiresidue pesticide analysis
• Fruits and vegetables
• Gas chromatography-mass spectrometry
• QuEChERS

Organochlorine, organophosphate pesticides and fungicides In fruits and vegetables were analyzed using disposable pipette extraction (DPX) followed by gas chromatography-mass spectrometry-selective ion monitoring (GC/MS-SIM) The intrinsic rapid mixing capabilities of DPX result in fast and efficient extractions. and eluates are concentrated by using minimal elution solvent volumes rather than solvent evaporation methods Matrix-matched calibrations were performed with reversed phase mechanisms (DPX-RP). and the limits of detection (LOD) wet e determined to be lower than 0.1 mu g/mL for all targeted pesticides in carrot and orange sample matrices Coefficients of determination (r(2)) were greater than 0.995 for most studied pesticides DPX-RP exhibited recoveries between 72 and 116% for nonpolar and slightly polar pesticides (log P>2) with most of the recoveries over 88% Only very polar pesticides (e g.

• 出版日期2010-3-19