TY - JOUR
T1 - Pb isotope evidence for contaminant-metal dispersal in an international river system: The lower Danube catchment, Eastern Europe
AU - Bird, Graham
AU - Brewer, Paul A.
AU - Macklin, Mark G.
AU - Nikolova, Mariyana
AU - Kotsev, Tsvetan
AU - Mollov, Mihail
AU - Swain, Catherine
N1 - Bird, G., Brewer, P. A., Macklin, M. G., Nikolova, M., Kotsev, T., Mollov, M., Swain, C. (2010). Pb isotope evidence for contaminant-metal dispersal in an international river system: The lower Danube catchment, Eastern Europe. Applied Geochemistry 25(7), 1070-1084.
Sponsorship: Royal Society Joint Project Grant; Aberystwyth University Research Fund (GB)
PY - 2010/7/1
Y1 - 2010/7/1
N2 - 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.
AB - 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.
U2 - 10.1016/j.apgeochem.2010.04.012
DO - 10.1016/j.apgeochem.2010.04.012
M3 - Article
SN - 0883-2927
VL - 25
SP - 1070
EP - 1084
JO - Applied Geochemistry
JF - Applied Geochemistry
IS - 7
ER -