Metal and Lead-Strontium Isotope Characterization Of Red and White Wines From Bujoru, Smulti and Oancea Wine Center, Romania

Abstract

The goal of this research was to assess the potential of Sr and Pb composition and also isotopic signature of lead (207 Pb/ 206 Pb, 208 Pb/ 206 Pb and 204 Pb/ 206 Pb), strontium (87 Sr/ 86 Sr) of wines from Bujoru, Smulți and Oancea wine-growing centers from Dealu Bujorului vineyard. In this study 162 wine samples were investigated. The wine samples were obtained from micro-wine production under conditions of 2014-2016 from Dealu Bujorului vineyard. For all tested wine samples, the toxic metals contents were found in quantities below the limits established by legislation. The highest values were registered to wine obtained from Feteasca Neagra(2016) variety (0.74275±0.00261) from Smulți wine-growing center, the lowest value of 87 Sr/ 86 Sr isotope ratio was recorded to wine obtained from Muscat Ottonel (2014) variety (0.70165±0.00058) Oancea wine-growing center. A possible explanation for the higher mean of 87 Sr/ 86 Sr isotopic ration for wine can be the mineral consistency of the vineyard soil and its different eco-climatic conditions. Regarding 206 Pb/ 207 Pb isotopic ratios, we can say that the analyzed wine samples show shows traces of pollution comes from cars (automobile emissions) (if 206 Pb/ 207 Pb=1.