CORESTA Congress, Kyoto, 2004, APOST 02

The role of heavy metals in the soil upon the technological, chemical and smoking qualities of tobacco

PAUNESCU A.D.; PAUNESCU M.; PANCIU A.; CÂRNICI M.
Romanian Parliament, Deputies House, Agricultural and Forestry Commission, Bucharest, Romania.
For tobacco, the soil represents the main source for the elements of mineral nutrition which are taken over through specific mechanisms and in the required ration for a normal metabolic activity. The purpose of this study is that of watching the level of the heavy metals in the Romanian tobaccos from the different growing areas in order to establish their values in the cured tobacco. The obtained values were compared to those in the world, connected with the tolerance for each element in tobacco or human organism. The following elements were analyzed: copper (Cu), zinc (Zn), cobalt (Co), lead (Pb), arsenic (As), mercury (Hg), molybdenum (Mo), Cadmium (Ca), nickel (Ni), chromium (Cr), manganese (Mn), cesium (Cs), boron (B), iron (Fe) and lithium (Li). Complex chemical analyses were made for soil samples taken on profiles (depths) in different growing areas of tobacco in our country depending on the tobacco type and cultivar. As well, determinations of the heavy metals in the tobacco leaves were made and the tobacco leaves were made and the obtained values were compared to those established throughout the world. The chemical analyses made during the study show that in the areas surveyed for the content in heavy metals in soil and in cured tobacco, the recorded values do not raise problems for the crop, being within the tolerance limits.