DOI

10.24411/1728-323X-2018-15123

Section

Physical geography and biogeography, soil geography and landscape geochemistry

Title

MAIN HYDRO-CHEMICAL PARAMETERS OF SURFACE WATERS OF THE UPPER FLOW OF THE YANA RIVER

Сontributors

M.I. Ksenofontova, PhD (Geography), Senior Researcher, Research Institute of Applied Ecology of the North, M.K. Ammosov North-Eastern Federal University, This email address is being protected from spambots. You need JavaScript enabled to view it., Yakutsk, Russia

Abstract

The article presents the results of hydrochemical monitoring in the upstream of the Yana River basin. Mining operations for the development of gold deposits are carried out in the selected areas of the studied watercourse. The watercourses of the Yana River basin are characterized by low salinity with a weak alkaline medium with very soft water, the composition of the water is mainly SO4-Mg-Ca. In the trace element composition of the water, Mn, Cu and Fe are distinguished. On average, the excess of standards for maximum permissible concentrations for fishery purposes for copper is 1.2 times and for total iron up to 2.0 times. The local areas of the Yana River basin exposed to athropogenic impact, as compared to regional background levels, have high Mn, Cu and Fe values. A relatively high content of suspended solids is noted in the sections of rivers with a technogenic load, and there is also a substitution of sulfate as the dominant anion and calcium as a cation with chlorides and sodium, respectively.

Keywords

: the Yana River, hydrochemistry, surface water, sediments, mineralization, composition of water.

References

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