Article (Scientific journals)
Lead concentrations and isotope ratios in speleothems as proxies for atmospheric metal pollution since the Industrial Revolution
Allan, Mohammed; Fagel, Nathalie; Van Rampelbergh, Maïte et al.
2015In Chemical Geology
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Abstract :
[en] Lead concentrations and isotope ratios from two speleothems from the Han-sur-Lesse cave in southern Belgium were measured in order to study the ability of speleothems to act as archives of atmospheric pollution. To address this aim we analyzed trace elemental Al and Pb compositions by LA-ICP-MS and ICP-MS as well as Pb isotopes by MC-ICP-MS. The results help to identify three intervals characterized by particularly high enrichment of Pb: from 1880 to 1905 AD, from 1945 to 1965 AD, and from 1975 to 1990 AD. The speleothem record shows similar changes as the known historical atmospheric pollution level in Belgium. Lead isotope ratios discriminate between Pb sources and confirm that coal and gasoline combustion, combined with regional metallurgical activities, were the predominant Pb pollution sources in the stalagmites during the last 250 years. This study opens possibilities to determine anthropogenic versus natural metal sources in well-dated speleothem archives.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Allan, Mohammed ;  Université de Liège - ULiège > Doct. sc. (géologie - Bologne)
Fagel, Nathalie  ;  Université de Liège - ULiège > Département de géologie > Argiles, géochimie et environnements sédimentaires
Van Rampelbergh, Maïte
Baldini, James
Riotte, Jean
Cheng, Hai
Edwards, Lawrence
Gillikin, David
Quinif, Yves
Verheyden, Sophie
Language :
English
Title :
Lead concentrations and isotope ratios in speleothems as proxies for atmospheric metal pollution since the Industrial Revolution
Publication date :
25 February 2015
Journal title :
Chemical Geology
ISSN :
0009-2541
Publisher :
Elsevier Science, Amsterdam, Netherlands
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 26 February 2015

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