Predominance of industrial Pb in recent snow (1994-2004) and ice (1842-1996) from Devon Island, Arctic Canada
Abstract: Atmospheric Pb contamination was studied using snow and ice from the Canadian arctic. Forty-five samples representing the past ten years of snow accumulation on Devon Island contain an average of 45.2 pg/g of Pb but only 0.43 pg/g of Sc. The average ratio of Pb to Sc (105) is far greater t...
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fttriple:oai:gotriple.eu:10670/1.nfreb7 2023-05-15T14:48:12+02:00 Predominance of industrial Pb in recent snow (1994-2004) and ice (1842-1996) from Devon Island, Arctic Canada Koerner, R. Shotyk, W. Zdanowicz, C. Zheng, J. Fisher, D. Krachler, M. 2005-01-01 https://doi.org/10.7939/R3XP6V322 https://era.library.ualberta.ca/items/f6f88d83-be22-458a-a5df-8ea58bd7f5ae en eng doi:10.7939/R3XP6V322 10670/1.nfreb7 https://era.library.ualberta.ca/items/f6f88d83-be22-458a-a5df-8ea58bd7f5ae other ERA : Education and Research Archive geo envir Other https://vocabularies.coar-repositories.org/resource_types/c_1843/ 2005 fttriple https://doi.org/10.7939/R3XP6V322 2023-01-22T17:19:38Z Abstract: Atmospheric Pb contamination was studied using snow and ice from the Canadian arctic. Forty-five samples representing the past ten years of snow accumulation on Devon Island contain an average of 45.2 pg/g of Pb but only 0.43 pg/g of Sc. The average ratio of Pb to Sc (105) is far greater than that of soil-derived dust particles ( in the range 1 to 5) which indicates that ca. 95 to 99% of recent Pb is anthropogenic. Isotopic analyses (Pb-206, Pb-207, Pb-208) confirm that anthropogenic sources continue to dominate atmospheric Pb inputs. Unlike snow from Greenland which receives Pb predominantly from the U. S. (Pb-206/Pb-207 approximate to 1.2), snow from Devon Island is less radiogenic (Pb-206/Pb-207 approximate to 1.15). There are pronounced seasonal variations, and the snow samples containing the greatest Pb enrichments are from winter when the Arctic is dominated by air masses originating in Eurasia. While the elimination of gasoline lead additives in Europe, North America and Japan has helped to reduce Pb emissions during the past two to three decades, aerosols in the Arctic today are still highly contaminated by industrial Pb. Other/Unknown Material Arctic Devon Island Greenland Unknown Arctic Canada Devon Island ENVELOPE(-88.000,-88.000,75.252,75.252) Greenland |
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English |
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geo envir Koerner, R. Shotyk, W. Zdanowicz, C. Zheng, J. Fisher, D. Krachler, M. Predominance of industrial Pb in recent snow (1994-2004) and ice (1842-1996) from Devon Island, Arctic Canada |
topic_facet |
geo envir |
description |
Abstract: Atmospheric Pb contamination was studied using snow and ice from the Canadian arctic. Forty-five samples representing the past ten years of snow accumulation on Devon Island contain an average of 45.2 pg/g of Pb but only 0.43 pg/g of Sc. The average ratio of Pb to Sc (105) is far greater than that of soil-derived dust particles ( in the range 1 to 5) which indicates that ca. 95 to 99% of recent Pb is anthropogenic. Isotopic analyses (Pb-206, Pb-207, Pb-208) confirm that anthropogenic sources continue to dominate atmospheric Pb inputs. Unlike snow from Greenland which receives Pb predominantly from the U. S. (Pb-206/Pb-207 approximate to 1.2), snow from Devon Island is less radiogenic (Pb-206/Pb-207 approximate to 1.15). There are pronounced seasonal variations, and the snow samples containing the greatest Pb enrichments are from winter when the Arctic is dominated by air masses originating in Eurasia. While the elimination of gasoline lead additives in Europe, North America and Japan has helped to reduce Pb emissions during the past two to three decades, aerosols in the Arctic today are still highly contaminated by industrial Pb. |
format |
Other/Unknown Material |
author |
Koerner, R. Shotyk, W. Zdanowicz, C. Zheng, J. Fisher, D. Krachler, M. |
author_facet |
Koerner, R. Shotyk, W. Zdanowicz, C. Zheng, J. Fisher, D. Krachler, M. |
author_sort |
Koerner, R. |
title |
Predominance of industrial Pb in recent snow (1994-2004) and ice (1842-1996) from Devon Island, Arctic Canada |
title_short |
Predominance of industrial Pb in recent snow (1994-2004) and ice (1842-1996) from Devon Island, Arctic Canada |
title_full |
Predominance of industrial Pb in recent snow (1994-2004) and ice (1842-1996) from Devon Island, Arctic Canada |
title_fullStr |
Predominance of industrial Pb in recent snow (1994-2004) and ice (1842-1996) from Devon Island, Arctic Canada |
title_full_unstemmed |
Predominance of industrial Pb in recent snow (1994-2004) and ice (1842-1996) from Devon Island, Arctic Canada |
title_sort |
predominance of industrial pb in recent snow (1994-2004) and ice (1842-1996) from devon island, arctic canada |
publishDate |
2005 |
url |
https://doi.org/10.7939/R3XP6V322 https://era.library.ualberta.ca/items/f6f88d83-be22-458a-a5df-8ea58bd7f5ae |
long_lat |
ENVELOPE(-88.000,-88.000,75.252,75.252) |
geographic |
Arctic Canada Devon Island Greenland |
geographic_facet |
Arctic Canada Devon Island Greenland |
genre |
Arctic Devon Island Greenland |
genre_facet |
Arctic Devon Island Greenland |
op_source |
ERA : Education and Research Archive |
op_relation |
doi:10.7939/R3XP6V322 10670/1.nfreb7 https://era.library.ualberta.ca/items/f6f88d83-be22-458a-a5df-8ea58bd7f5ae |
op_rights |
other |
op_doi |
https://doi.org/10.7939/R3XP6V322 |
_version_ |
1766319293239132160 |