Gas chromatographic determination of azoxystrobin - dinocap - fenarimol - penconazole and quinoxyfen during winemaking
2003
Di Bella, G. (Messina Univ. (Italy). Dipartimento Farmaco Chimico) | Saitta, M. | Salvo, F. | Dugo, G. (Messina Univ. (Italy). Dipartimento di Chimica Organica e Biologica) | Nicotina, M. (Naples Univ., Portici (Italy). Dipartimento di Entomologia e Zoologia Agraria)
إنجليزي. A quick gas chromatographic method is described to determine residues of azoxystrobin, dinocap, fenarimol, penconazole and quinoxyfen in grapes, must, marc and wine. The samples were extracted with hexane-ethyl acetate and directly analyzed using a high resolution gas chromatograph fitted with an electron-capture detection system (ECO). No clean-up was necessary because there were no interferences in the chromatogram. Recoveries from untreated samples spiked with known amounts of the pesticides (0.01, 0.1 and 1.0 mg/kg) ranged from 80.4% (marc) to 100.7% (grapes) for azoxystrobin; from 81.8% (marc) to 110.4% (wine) for dinocap; from 82.8% (grapes) to 98.2% (wine) for fenarimol; from 80.9% (marc) to 97.3% (wine) for penconazole; from 87.0% (wine) to 95.8% (wine) for quinoxyfen. The limits of quantification were 0.010 mg/kg for dinocap and 0.005 mg/kg for the other fungicides; the detection limits were 6 x 10*[-4) ng for dinocap and 3 x 10*[-4) ng for the others
اظهر المزيد [+] اقل [-]إيطالي. In questo lavoro viene descritto un metodo rapido per la determinazione simultanea di azoxystrobin, dinocap, fenarimol, penconazolo e quinoxyfen in uve, mosti, vinacce e vini mediante HRGC-ECD. I campioni, estratti con esano:acetato di etile sono analizzati direttamente, senza nessuna purificazione. I valori di recupero, determinati a tre diversi livelli di fortificazione in triplo, oscillano per l'azoxystrobin da 80,4% (vinacce) a 100,7% (uve); per il dinocap da 81,8% (vinacce) a 110,4% (vini); per il fenarimol da 82,8% (uve) a 98,2% (vino); per il penconazolo da 80,9% (vinacce) a 97,3% (vino); per il quinoxyfen da 87,0% (vino) a 95,8% (vino). I limiti di quantificazione sono pari a 0,010 mg/kg per il dinocap e 0,005 mg/kg per gli altri fungicidi; i limiti di rivelabilita' sono pari a 6 x 10*[-4) ng per il dinocap e 3 x 10*[-4) ng per gli altri prodotti
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Istituto di Servizi per il Mercato Agricolo Alimentare
