Influence of Different Mineral and Organic Pesticide Treatments on Cd(II), Cu(II), Pb(II), and Zn(II) Contents Determined by Derivative Potentiometric Stripping Analysis in Italian White and Red Wines

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• 作者：Francesco Salvo ; Lara La Pera ; Giuseppa Di Bella ; Mariano Nicotina ; and Giacomo Dugo
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2003
• 出版时间：February 12, 2003
• 年：2003
• 卷：51
• 期：4
• 页码：1090 - 1094
• 全文大小：180K
• 年卷期：v.51,no.4(February 12, 2003)
• ISSN：1520-5118

文摘

This paper deals with the use of derivative potentiometric stripping analysis (dPSA) as a rapid andprecise method to determine Cd(II), Cu(II), Pb(II), and Zn(II) levels in red and white wine samplesfrom Sicily, Campania, and Tuscany and to investigate the possible connection between the contentof these metals and the pesticide treatments used in vine-growing to control plant diseases and pests.dPSA allowed direct quantitation of heavy metals in acidified wines without any sample pretreatment.Mean recoveries of Cd(II), Cu(II), Pb(II), and Zn(II) ranged from 95.5 to 99.2% for white wine samplesand from 96.1 to 100.0% for red wine samples. The obtained results showed that Cd(II) was notfound in any sample and that Cu(II), Pb(II), and Zn(II) levels were always lower than the toxicitylimits in both fungicide- and water-treated wines. Nevertheless, the contents of metals were increasedin samples from organic and inorganic pesticides treatment with respect to the water-treated samples.In particular, quinoxyfen, dinocap-penconazole, and dinocap applications considerably increased Cu(II)and Zn(II) contents in white and red wines. The levels of lead were significantly raised by azoxystrobinand sulfur treatments.Keywords: Derivative potentiometric stripping analysis; heavy metals; pesticides; wines