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

• Published in: International Multidisciplinary Scientific GeoConference : SGEM Vol. 17; pp. 527 - 534
• Main Authors: Kolpakova, Marina, Evgrafova, Valeria, Isupov, Vitaliy
• Format: Conference Proceeding
• Language: English
• Published: Sofia Surveying Geology & Mining Ecology Management (SGEM) 01.01.2017
• Subjects: Aluminum; Arsenic; Boron; Bottom sediments; Bromine; Chemical elements; Chloride; Composition; Copper; Investigations; Iodine; Iron; Lake sediments; Lakes; Lithium; Manganese; Migration; Mineral resources; Mineralization; Nickel; Organic matter; Saline environments; Salt lakes; Sediment; Sediments; Silicon; Soda lakes; Solutions; Strontium; Total dissolved solids; Trace elements; Uranium; Siberia; Russia
• ISSN: 1314-2704
• DOI: 10.5593/sgem2017/31

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.