STUDY OF PECULIARITIES OF ACCUMULATION OF HEAVY METALS AND ARSENIC IN MEDICINAL PLANT RAW MATERIALS OF SYNANTHROPIC FLORA OF VORONEZH REGION

Abstract

Fundamental regional ecological and pharmacognostic studies of the quality of LRS were carried out on the example of the Voronezh region, the peculiarities of the accumulation of the most dangerous heavy metals and arsenic in LRS growing both in traditional places of harvesting and in anthropogenic disturbed ecotopes were studied. The highest concentrations of lead are observed in the roots of medicinal dandelion and common burdock, bird's mountain grass, plantain leaves. The mercury content in all the studied samples is generally low, does not exceed 10% of the MAC. Higher concentrations of cadmium were found in herbs of bitter wormwood and five-lobed motherwort, roots of common burdock and medicinal dandelion, leaves of large plantain. The arsenic content in a number of samples of bitter wormwood grass and common yarrow, big plantain leaves, common burdock roots exceeded the MAC. Nickel is intensively accumulated by the leaves of the plantain of the great and nettle of the dioecious, by the herbs of the motherwort of the five-lobed and the mountain of the bird. The most active concentrators of chromium and cobalt are the roots; chromium also actively accumulates in the leaves of the plants under study. High accumulation of copper was distinguished by herbs. Zinc accumulates to the greatest extent in the studied roots and herbs of plants. Clars of the studied elements in plants of the synanthropic flora of the Voronezh region have been identified, which, along with the MAC, is an important ecological and geochemical indicator for LRS, reflecting the combined impact of technogenic and natural processes occurring in a certain time slice.