DBPapers
DOI: 10.5593/sgem2017/31/S12.015

CHEMICAL SPECIATION OF HEAVY METALS IN PEAT BOG, KOKCHETAV MOUNTAIN GROUP, NORTH KAZAKHSTAN

O. Naymushina, M. Kolpakova, O. Gaskova
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, 113-120 pp, DOI: 10.5593/sgem2017/31/S12.015

ABSTRACT

In the present study, chemical speciation of heavy metals in bog water and peat deposits, collected from the territory of the Kokchetav mountain group, North Kazakhstan, is described. The purpose was to evaluate quantitatively migration, distribution, and redistribution of the elements by the example of the natural object as a basic tool for the study of geochemical cycles of elements. Studying of the chemical composition of bog and pore water has been carried out, their comparative characteristic was executed, mechanisms of elements behavior in the presence of organic acids in water and peat deposits were investigated. Besides, detailed studying of mineral and element structure of deposits and filters after a water filtration (0.45 and 0.2 microns) was carried out. Chemical forms of heavy metals in pore and surface water were calculated by the application of MINTEQ-2 software. The obtained results about elements species in the sediments explain the relationships between peat properties and the content, distribution, mobility, and availability of the heavy metals.

Keywords: heavy metals, migration of elements, peat deposits, bog water, pore water