Heavy metals and metalloids accumulation in organs of some representatives of the genus <i>Paeonia</i> L. under technogenic pollution conditions

Abstract

The paper examines features of heavy metals and metalloids accumulation by decorative flower crops on the example of the generic complex Paeonia L. in the urbanized environment of Ufa. The objects of the research are four species (P. peregrina Mill., P. lactiflora Pall., P. lactiflora f. rosea, P. delavayi Franch.) (Family Paeoniaceae Rudolphi) and three varieties of hybrid paeony (Appassionata, Mustai Karim, Jeanne d'Arc). The study of the elemental composition of the aboveground and underground parts was carried out according to the method Determination of As, Pb, Cd, Sn, Cr, Cu, Fe, Mn and Ni in samples of food raw materials by atomic absorption method with electrothermal atomization. Mathematical data processing was carried out using generally accepted methods of variation statistics using the AgCStat software package in the form of an Excel add-in. It was revealed that in the studied samples the copper content is 4,152520,00 times higher, and the cadmium content is 0,432520,0 times lower than that of other elements. The minimum concentrations of arsenic, chromium, manganese and iron were noted in the roots; lead, cadmium and copper in the leaves; nickel in the flowers of the studied paeonies. The maximum content of arsenic and chromium was found in the leaves; lead, nickel, manganese and iron in stems; cadmium and copper in flowers. The results of the correlation analysis showed that the absolute values of the concentrations of the studied elements in the considered taxon of paeonies correlate with each other to a moderate and strong degree.