pdfs/vol 61 1-6
3. 15-21p.pdf
THE CONTENTS OF Pb, Cd, Ni and Cr IN SOILS AND
TOBACCO IN VARIOUS REGIONS OF R. MACEDONIA
Valentina Pelivanoska, Kiril Filiposki, Biljana
Jordanoska
University “St.Kliment Ohridski”-Bitola,
Scientific Tobacco Institute-Prilep,
Republic of Macedonia e-mail:
vpelivanoska@yahoo.com;
ABSTRACT
Tobacco is one of the most important crops grown
in the Republic of Macedonia. This crop can easily accumulate certain metals in its
leaves. High concentration of these metals affects the
quality of tobacco products and can have a
harmful effect on consumers’ health. The soil study was
conducted on family farms in different parts of
Macedonia. Analyses were made on pH, humus, total
content of Pb, Cd, Ni and Cr in soils, as well
as concentrations of these elements in the three primings
of tobacco. Correlation coefficients between the
total metal concentration in investigated parameters
in tobacco and soils indicated the existence of
strong relationship between the lower, middle and
upper primings for each metal. Statistically significant dependence was found
between Pb contents of the plant material (all
three primings) and humus, clay and Cd, Cu, Zn
and Ni content in the soil. All other obtained results
showed that the Pb, Cd, Ni and Cr contents in
soil had no influence upon their accumulation in tobacco
leaves. Metal concentrations in tobacco plants
and respective soils were below the permissible limits.
