DBPapers
DOI: 10.5593/sgem2017/31/S12.066

RELATIONSHIPS BETWEEN THE TRACE ELEMENT COMPOSITION OF WATER AND BOTTOM SEDIMENTS OF RUSSIAN ENDORHEIC SALINE LAKES (ALTAI REGION)

M. Kolpakova, V. Evgrafova, V. Isupov
Monday 11 September 2017 by Libadmin2017

References: 17th International Multidisciplinary Scientific GeoConference SGEM 2017, www.sgem.org, SGEM2017 Conference Proceedings, ISBN 978-619-7408-04-1 / ISSN 1314-2704, 29 June - 5 July, 2017, Vol. 17, Issue 31, 527-534 pp, DOI: 10.5593/sgem2017/31/S12.066

ABSTRACT

The trace element composition of endorheic saline lakes (with total dissolved solids varies from 1 to 590 g/L) of the Altai Region (Russia) is of undoubted interest from the point of view of their mineral resources. Among the trace elements in lake waters, high content of boron (up to 78 mg/L), bromine (up to 820 mg/L), lithium (up to 3.6 mg/L), strontium (up to 13 mg/L), iodine (up to 6.3 mg/L), and arsenic (up to 0.6 mg/L) have been determined. The content of uranium in the investigated lakes varies over a wide range (9.2*10-4 - 4.1), average is 0.3 mg/L. It is shown that soda lakes are characterized by accumulation of U, As, Si, Mo; high content of Sr and Li are specialty of chloride lakes. The article presents that amount of trace elements in bottom sediments of studied lakes is closely connected with water-rock interaction processes and migration features of element in brackish solutions. Such elements as Si, B, As preferentially migrate in HkMeOnm- form; Br and Mn, on the contrary, only in the form of pure ion; Ni, Cu, Th, U, Al, and Fe migrate in complexes with organic matter.

Keywords: saline lakes; trace elements; uranium; water-rock interaction; migration forms; Russia