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Determination of impurities in pesticides and their degradation products formed during the wine‐making process by solid‐phase extraction and gas chromatography with detection by electron impact mass spectrometry. I. Vinclozoline, procymidone and fenitrothion
Author(s) -
Jiménez Juan José,
Bernal José Luis,
del Nozal M. Jesús,
Arias Elena,
Bernal José
Publication year - 2004
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1383
Subject(s) - chemistry , fenitrothion , impurity , gas chromatography , wine , chromatography , mass spectrometry , extraction (chemistry) , procymidone , electron ionization , solid phase extraction , gas chromatography–mass spectrometry , electron capture detector , pesticide , organic chemistry , ion , food science , agronomy , biology , ionization
The presence of degradation products of vinclozoline, procymidone and fenitrothion, and of impurities from their commercial formulations, was studied in white and red wines elaborated from spiked must. After solid‐phase extraction the nature of the residues was established by gas chromatography with mass spectrometric detection. The structures of several degradation products and impurities are discussed and elucidated on the basis of their electron impact spectra. In elaborated wines the concentrations of the degradation products and impurities are lower than those of the original active ingredients. Aminofenitrothion and acetylamino‐formyl‐fenitrothion‐oxon are the main residues of fenitrothion in wine. For dicarboximides, an alcohol derivative of vinclozoline was found in addition to 3,5‐dichloroaniline. Copyright © 2004 John Wiley & Sons, Ltd.