Section

Geoecology

Title

ACCUMULATION OF HEAVY METALS IN SOILS AND GRASSY VEGETATION IN THE VICINITY OF THE GOLD RECOVERY PLANT (THE REPUBLIC OF BASHKORTOSTAN)

Сontributors

I. N. Semenova, Ph. D. (Biology), Dr. Habil., Senior Researcher, E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.,

Ya. T. Suyundukov, Ph. D. (Biology), Dr. Habil., Director,

R. F. Khasanova, Ph. D. (Biology), Dr. Habil., Leading Researcher,

Y. S. Rafikova, Ph. D. (Biology), Senior Researcher,

G. Ya. Biktimerova, Ph. D. (Biology), State Autonomous Scientific Institution (SASE) Institute of Strategic Studies, the Republic of Bashkortostan, Sibay branch, Sibay;

L. N. Belan, Ph. D. (Geology and Mineralogy), Dr. Habil., Director. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it., Scientific Research Institute of Health and Safety, Ufa,

A.B. Zulkarnaev, Ph. D. (Biology), Associate Professor, Sibay Institute (branch) of the Bashkir State University, Sibay

Abstract

The pollution of soils with heavy metals in the village of Semenovskoye in the Baimaksky Dis trict of the Republic of Bashkortostan as a result of the functioning of the gold recovery factory there during the 20th century was studied. The content of Cu, Zn, Fe, Ni, Mn, Cd, Pb was deter- mined with the atomic absorption method. It was revealed that in the vicinity of the gold recovery plant, which ceased to function at the end of the last century, an increased levels of zinc, ferrum, cadmium were detected. The soils of the homestead plots of the village of Semenovskoye are less polluted by heavy metals, although in a number of cases an increased levels of copper, zinc, and iron are observed. The content of copper in the Achillea millefolium organs ranged from 5.5 to

20.0     mg/kg and did not exceed the maximum permissible level (30 mg/kg). The zinc content in the studied plants was in the range of concentrations from 20.0 to 106.5 mg/kg with a maximum allowable level of 50 mg/kg. In a number of cases, an elevated level of iron, as well as toxic ele- ments of cadmium and lead, was noted. In most cases, the content of the studied chemical elements was greatest in the root system of plants, which indicates the barrier role of this organ.

Keywords

mining enterprises, heavy metals, ecological condition of soils, Achillea millefo lium, gold recovery plant.

References

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