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Multiresidue Analysis of Pesticides in Wines Using C-18 Solid-Phase Extraction and Gas Chromatography-Mass Spectrometry

J W. Wong, C. A. Halverson
Am J Enol Vitic. January 1999 50: 435-442; published ahead of print January 01, 1999
J W. Wong
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C. A. Halverson
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Abstract

Procedures to analyze pesticides in wines were developed and evaluated. Wine samples were applied to solid-phase extraction cartridges (C-18, octadecyl), and pesticides were eluted with ethyl acetate. The reduced solvent extracts were subsequently screened and analyzed by gas chromatography-mass spectrometry using full scan or selected ion monitoring. Target and qualifier ions and retention times were used to screen, confirm, and determine recoveries of 48 common pesticides. Various parameters including pesticide spike concentrations, wine type (red and white), and salt addition prior to extraction were compared and evaluated for highest extraction efficiencies and optimal sensitivity in spiked wine samples. Suitable recoveries to most pesticides at the 0.01 and 0.10 mg/L fortifications were obtained by adding sodium chloride prior to extraction and ethyl acetate elution. These findings confirm that this is a fast and effective method for identifying several types of pesticides in wines.

  • pesticides in wine
  • identification
  • GC/MS
  • Copyright 1999 by the American Society for Enology and Viticulture
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Multiresidue Analysis of Pesticides in Wines Using C-18 Solid-Phase Extraction and Gas Chromatography-Mass Spectrometry
J W. Wong, C. A. Halverson
Am J Enol Vitic.  January 1999  50: 435-442;  published ahead of print January 01, 1999

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Multiresidue Analysis of Pesticides in Wines Using C-18 Solid-Phase Extraction and Gas Chromatography-Mass Spectrometry
J W. Wong, C. A. Halverson
Am J Enol Vitic.  January 1999  50: 435-442;  published ahead of print January 01, 1999
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