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 ionization mass spectrometry. II. Bromopropylate, trichlorphon, parathion-methyl and tebuconazole.
The presence of degradation products of bromopropylate, trichlorphon, parathion-methyl and tebuconazole in white and red wines elaborated from musts spiked with commercial formulations of the pesticides was studied. Must and wine were subjected to solid-phase extraction followed by gas chromatography with electron ionization mass spectrometric detection. Alpha-bromophenylphenylmethanol, aminoparathion, acetylaminoparathion-oxon and dichlorvos have been identified as degradation products of bromopropylate, parathion-methyl and trichlorphon in wines, respectively. Moreover, the presence of additives and impurities of the formulations in elaborated wines has also been found.
Department of Analytical Chemistry, Faculty of Sciences, University of Valladolid, Prado de la Magdalena s/n, 47005-Valladolid, Spain. jjimenez@qa.uva.es
Juan José
JJ
Jiménez
José Luis
JL
Bernal
M Jesús
MJ
del Nozal
Laura
L
Toribio
José
J
Bernal
D001561:Benzilates / Q000032:analysis; D005506:Food Contamination; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D008743:Methyl Parathion / Q000032:analysis; D063065:Organophosphonates / Q000032:analysis; D010573:Pesticide Residues / Q000032:analysis*; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*; D014230:Triazoles / Q000032:analysis; D014920:Wine / Q000032:analysis*
D001561:Benzilates; D063065:Organophosphonates; D010573:Pesticide Residues; D014230:Triazoles; C038267:isopropyl 4,4'-dibromobenzilate; C087114:tebuconazole; D008743:Methyl Parathion