Pb isotope evidence for contaminant-metal dispersal in an international river system: the lower Danube catchment, Eastern Europe

Bird, Graham and Brewer, Paul A. and Macklin, Mark G. and Nikolova, Mariyana and Kotsev, Tsvetan and Mollow, Mihail and Swain, Catherine (2010) Pb isotope evidence for contaminant-metal dispersal in an international river system: the lower Danube catchment, Eastern Europe. Applied Geochemistry, 25 (7). pp. 1070-1084. ISSN 0883-2927

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Item Type:Article
Item Status:Live Archive

Abstract

Lead isotope signatures (207Pb/206Pb, 208Pb/206Pb, 208Pb/204Pb, 206Pb/204Pb), determined by magnetic sector ICP-MS in river channel sediment, metal ores and mine waste, have been used as geochemical tracers to quantify the delivery and dispersal of sediment-associated metals in the lower Danube River catchment. Due to a diverse geology and range of ore-body ages, Pb isotope signatures in ore-bodies within the lower Danube River catchment show considerable variation, even within individual metallogenic zones. It is also possible to discriminate between the Pb isotopic signatures in mine waste and river sediment within river systems draining individual ore bodies. Lead isotopic data, along with multi-element data; were used to establish the provenance of river sediments and quantify sedimentary contributions to mining-affected tributaries and to the Danube River. Data indicate that mining-affected tributaries in Serbia and Bulgaria contribute up to 30 of the river channel sediment load of the lower Danube River. Quantifying relative sediment contributions from mining-affected tributaries enables spatial patterns in sediment-associated metal and As concentrations to be interpreted in terms of key contaminant sources. Combining geochemical survey data with that regarding the provenance of contaminated sediments can therefore be used to identify foci for remediation and environmental management strategies. © 2010 Elsevier Ltd.

Keywords:Bulgaria, Contaminant sources, Contaminated sediment, Danube rivers, Eastern Europe, Environmental management strategy, Geochemical survey, Geochemical tracer, Isotopic data, Isotopic signatures, Lead isotope, Magnetic sectors, Metal ores, Mine wastes, Multi-element, Ore bodies, Pb isotopes, River channels, River sediments, River systems, Sediment loads, Spatial patterns, Catchments, Environmental management, Inductively coupled plasma mass spectrometry, Isotopes, Lead, Metals, Ore deposits, Ores, Pollution, Rivers, Runoff, Sedimentology, Solid wastes, Uranium mines, River pollution, arsenic, catchment, fluvial deposit, inductively coupled plasma method, mine waste, pollutant transport, provenance, sediment pollution, tracer, water quality, Danube Basin
Subjects:F Physical Sciences > F840 Physical Geography
Divisions:College of Science > School of Geography
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ID Code:25062
Deposited On:25 Nov 2016 11:45

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