Gas chromatographic determination of cyprodinil, fludioxonil, pyrimethanil, and tebuconazole in grapes, must, and wine.
A rapid and simple gas chromatographic method for determinating cyprodinil, fludioxonil, pyrimethanil, and tebuconazole in grapes, must, and wine is described. An on-line microextraction method was used with a one-step extraction-partition procedure. Nitrogen-phosphorus and mass spectrometric detectors were used, because of their low sensitivity and high selectivity. Because of high selectivity of detector, no cleanup was necessary and the extract was concentrated 5 times. Recoveries from fortified grapes, must, and wine ranged from 93 to 110%. Limits of determination were 0.05 mg/kg for cyprodinil and pyrimethanil and 0.10 mg/kg for fludioxonil and tebuconazole.
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Università di Cagliari, Dipartimento di Tossicologia, Italy.
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Garau
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EV
D002849:Chromatography, Gas; D004149:Dioxoles / Q000032:analysis; D005504:Food Analysis; D005638:Fruit / Q000737:chemistry*; D005659:Fungicides, Industrial / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D009584:Nitrogen / Q000737:chemistry; D010573:Pesticide Residues / Q000032:analysis*; D010758:Phosphorus / Q000737:chemistry; D011743:Pyrimidines / Q000032:analysis; D011758:Pyrroles / Q000032:analysis; D012015:Reference Standards; D015203:Reproducibility of Results; D014230:Triazoles / Q000032:analysis; D014920:Wine / Q000032:analysis*
D004149:Dioxoles; D005659:Fungicides, Industrial; D010573:Pesticide Residues; D011743:Pyrimidines; D011758:Pyrroles; D014230:Triazoles; D010758:Phosphorus; C087114:tebuconazole; C108338:cyprodinil; C108337:pyrimethanil; C108339:fludioxonil; D009584:Nitrogen