Lead isotopic signatures of wine and vineyard soils - tracers of lead origin

The Pb contents and Pb-206/Pb-207 and Pb-208/(206)pb isotopic ratios were studied in the soils and wines (2004 harvest) of three vineyard areas of the Czech Republic. The areas differ in their geological basements and anthropogenic loading. The isotopic compositions of wine in areas with intensive industry (Most, North Bohemia Pb-206/Pb-207(wine) =1.178 +/- 0.004) and the agricultural areas of Central Bohemia (Roudnice nad Labem Pb-206/Pb-207(wine) = 1.176 +/- 0.007) are similar to the Pb isotopic composition of airborne particulate material typical of polluted and industrial environments (Pb-206/Pb-207 = 1.17-1.19). The isotopic composition of wine from Prague (Pb-206/Pb-207(wine) = 1.174 +/- 0.003) is different from that of the soil, which was severely contaminated in the past by vehicular Pb (Pb-206/Pb-207(soil) = 1.147-1.168). This fact shows that interception of airborne Pb by plants is greater than its uptake by the root system. (c) 2005 Elsevier B.V All rights reserved.