10.24411/1728-323X-2018-16016

Ecology

ESTIMATION OF BACKGROUND CONTAMINATION OF THE WATER BODIES BOTTOM SEDIMENTS IN THE NORTH-EASTERN PART OF THE TAYMYR DISTRICT OF THE KRASNOYARSK REGION

1. T. I. Khcmenushko, postgraduate student, Department of Ecology and Biophysics, Institute of Natural and Technical Sciences Surgut State University, Head of Laboratory, limited liability company "Center for Scientific-Research and Industrial Works" (LLC "CNIP"), This email address is being protected from spambots. You need JavaScript enabled to view it., Kogalym, Russia,
2. S.N. Rusak, Ph. D. (Biology), Dr. Habil., Associate Professor, Professor of the Department of Ecology and Biophysics of the Institute of Natural and Technical Sciences, Budget Institution of Higher Education of Khanty-Mansiysk Autonomous Okrug-Yugra Surgut State University (Sursu), This email address is being protected from spambots. You need JavaScript enabled to view it., Surgut, Russia,
3. M. I. Kurilenko, postgraduate student of the Department of Ecology and Biophysics of the Institute of Natural and Technical Sciences of Surgut State University, Environmental Engineer (Ecologist), Open Joint Stock Company "SurgutNIPIneft", This email address is being protected from spambots. You need JavaScript enabled to view it., Surgut, Russia

For the first time, the studies of bottom sediments of 13 water bodies in the north-eastern part of the Taymyr District of the Krasnoyarsk Territory were carried out. Their visual and physical characteristics of bottom sediments (color, odor, consistency, inclusions) were determined. Quantitative chemical analysis was carried out to determine the content of hydrocarbons, total iron, lead, zinc, manganese, nickel, chromium VI, copper. The identification of petroleum products in the bottom sediment samples was carried out by spectrophotometric method, heavy metals were investigated by atomic emission method. In addition, an integral toxicity assessment was performed by the biotesting method for the survival of daphnia (Daphnia magna Straus). The studies of bottom sediments showed that the concentration of oil products varies from 59 to 88 mg/kg. Heavy metals were determined in mobile and gross form. The content of lead, nickel, iron, chromium and mercury were below the detection limits of the procedure. The results of the biotesting of all the studied water bodies showed the absence of a chronic toxic effect. In connection with the absence of anthropogenic load on the surveyed area, the obtained data are recommended to be used as background values. Since there are no maximum allowable concentrations for bottom sediments, it is recommended using background concentrations for environmental monitoring.

the Taymyr District of the Krasnoyarsk Territory, bottom sediments, gross and mobile forms of heavy metals, biotesting, background values

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