Heavy metal content in Virginia and Burley tobacco
2004
Zapryanova, P. | Bozhinova, R. (Tobacco and Tobacco Products Institute, Plovdiv (Bulgaria))
A field experiment was carried out on gleyic chromic luvisols where the content of heavy metals in Virginia and Burley tobaccos was studied. Leaves from the middle stalk position in technical maturity were analyzed. Iron, manganese, copper, zinc, lead, cadmium, cobalt, nickel and chrome were determined in soil and plant samples with atomic absorption specrometer. The concentration of heavy metals in all tested genotypes correspond to the ones determined by other authors and are lower than the ones considered critical for the plants. Burley varieties accumulate more manganese, copper, nickel and zinc. No significant differences with Virginia tobaccos were observed for other elements. Virginia variety K 326 had the lowest heavy metal content of all.
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