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Monitoring The Content of Heavy Metals in The Soil and Wines from Different Wine-Growing Areas of Romania

Determination of heavy metals in soil and wine is very important for wine quality and consumer health, but at the same time it is a complementary tool for differentiating wines according to their geographical origin. In this work, soils and ten brands of wines originated from four major wine-growing areas of Romania (Iaşi, Babadag, Ştefăneşti and Blaj) were considered for performing a multielement (Cr, Ni, Cu, As, Pb, Hg, V, Sr, Mn, Zn, Fe) investigation in order to assess regional specificity. Heavy metals found in the investigated wines were below the limits imposed by European standards (O.I.V.) the elements concentrations following the trend: Zn>Fe>Mn>Sr>Ni>Cr>Cu>Pb>V>Hg>As. For the soils analyzed, the heavy metals content was found to be below the maximum permitted limit, except for Cu (135.45 mg/kg) from the Iaşi vineyard, which was at the permitted limit. The high values obtained for copper may be the result of different treatments with the Bordelaise solution for the vine. The elements CA, Mn and Hg observed from the research that they are predominantly of natural origin. Based on our results, a distinction has been made between wines according to their geographical origin, considering that the specific elements of discrimination Sr, Pb, and Ni for the Stefănesti vineyard (Muntenia region), Cr and Hg for the Babadag vineyard (Dobrogea region), Sr and V for the Iaşi vineyard (region of Moldova), respectively Fe and Zn for the Blaj vineyard (Transilvania region).