Mercury pressure in the Tomsk Region based on biomonitoring studies

Abstract

The article presents the original data on the total Hg concentration in needles of different tree species and aspen foliage in the Tomsk Region. Mean Hg concentrations were lower than in the Republic of Sakha-Yakutiya but higher than in Southern Siberia. Hg concentrations increased from the southeast to the northeast of the Tomsk Region. Cedar needles had increased sorption properties relative to this metal, and pine needles had the lowest ones. Aspen foliage accumulated mercury better in one growing season compared to needles. The calculated indicators indicated elevated Hg concentrations in needles relative to the background, the temporary allowable concentration and the mean value for terrestrial plants.