CALCULATION OF THE ARSENIC, LEAD AND CADMIUM ACCUMULATION COEFFICIENTS BY ABOVEGROUND AND UNDERGROUND PAEONIA ORGANS

The purpose of research is a comparative analysis of the accumulation coefficients of arsenic, lead and cadmium in the above-ground (flower, leaf, stem) and underground (root) organs of species and varieties of the genus Paeonia L. in a settlement (the Ufa City). We studied seven peony taxa introduced into the South Ural Botanical Garden-Institute of the Ural Federal Research Center of the Russian Academy of Sciences (P. peregrina Mill., P. lactifloraPall., P. lactiflora f. rosea, P. delavayiFranch., P. × hybrida Appassionata, Mustai Karim, Jeanned'Arc). The elemental composition of plant samples was carried out by atomic spectroscopy. The data obtained were processed using the methods of variation statistics and using the AgCStat program. It was revealed that the content of chemical elements in plant raw materials varies sufficiently depending on the organ of the introduced species. The calculation of the accumulation coefficient revealed that varieties and species of the genus Paeonia most actively absorbed lead, compared with arsenic and cadmium. leaves and roots; cadmium > lead > arsenic – for stems. The main depositing organ for lead and arsenic in most of the studied samples are leaves, for cadmium – stems. The accumulation coefficient of arsenic in some representatives of the genus Paeonia is on average 0.82; lead – 1.8; cadmium – 1.2. Thus, it was revealed that the introduced plants in the conditions of the Bashkir Cis-Urals absorb arsenic without barriers; lead and cadmium are characterized by a barrier type of absorption.