DBPapers
DOI: 10.5593/SGEM2014/B52/S20.066

POLLUTION INDEX CALCULATION FOR GEOCHEMICAL ASSESSMENT OF HEAVY METALS IN WATERCOURSES CONTAMINATING WATER RESERVOIR RUZIN I. (SLOVAKIA)

E. Singovszka; M. Balintova, M. Holub
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-18-6 / ISSN 1314-2704, June 19-25, 2014, Book 5, Vol. 2, 499-506 pp

ABSTRACT
The contamination of aquatic and terrestrial ecosystems with heavy metals and other mining chemicals have been major environmental problems in many mining areas of the world. Industrial wastes, geochemical structure and metals mining create a potential source of heavy metal pollution in the aquatic environment especially in sediment. Water reservoir Ruzin located in east Slovakia is one of the most contaminated sites by heavy metals originating from mining activity. Water reservoir Ruzin I. is situated in territory, which is well-known by its mining and metallurgical history for several centuries, such as ore deposit Smolnik. Surface water from this area is contaminated by acid mine drainage (AMD) outflowed from abandoned sulphide mine Smolnik. AMD with low value of the pH (about 3-4) is a result of chemical oxidation of sulphides and other chemical processes in mine. The pH increasing due to the mixture AMD with surface water is followed by metal precipitation and its sedimentation in water environment. Contaminated sediment is transported by erosion processes into the river Hnilec and then into water reservoir Ruzin. The data in this work were undergo several experimental procedures including statistical analyses, normalization and estimating anthropogenic impact factors to establish the concentration and identify the status of each heavy metal under investigation. The aim of this study was to evaluate the chemical quality of the sediment influenced by the mining activities from Smolnik creek through the Hnilec river until to water reservoir Ruzin I. by calculation of the enrichment factor, pollution load index and geoaccumulation index.

Keywords: Acid mine drainage, heavy metals, pollution load index, enrichment factor, geoaccumulation index