학술논문
Dispersal of contaminant metals in the mining-affected Danube and Maritsa drainage basins, Bulgaria, Eastern Europe
Document Type
Academic Journal
Author
Source
Water, Air, & Soil Pollution. February, 2010, Vol. 206 Issue 1-4, p105, 23 p.
Subject
Language
English
ISSN
0049-6979
Abstract
Metal dispersal in the Danube and Maritsa drainage basins resulting from metal mining activities in Bulgaria has been assessed through the collection of 611 samples of river water, river channel and floodplain sediment, and mine waste from over 218 sites. Concentrations of Cd, Cu, Pb, and Zn in river water were found to be highest in close proximity to locations of Cu and Pb-Zn mining regions in the Maritsa catchment. Downstream dispersal of solute metals in these catchments, and into the River Danube, was found to be limited by physical dilution and a well-buffered pH environment. Dispersal of contaminant metals in channel and floodplain sediment was found to be extensive. Contamination was particularly severe in the Rivers Timok and Iskar (Danube catchment) and the Topolnitsa, Chepelarska, and Arda Rivers (Maritsa catchment) and creates the potential of transboundary dispersal of contaminant metals. Keywords Metal mining * Contaminant dispersal * River Danube * Bulgaria
1 Introduction Contaminant metals present in river systems are derived from a variety of natural and anthropogenic sources (Dawson and Macklin 1998), and the degradation of the fluvial environment with [...]
1 Introduction Contaminant metals present in river systems are derived from a variety of natural and anthropogenic sources (Dawson and Macklin 1998), and the degradation of the fluvial environment with [...]