| |  Online-Ressource |
|---|
| Verfasst von: | Shotyk, William [VerfasserIn]  |
|---|
| | Zheng, Jiancheng [VerfasserIn] |
|---|
| | Krachler, Michael [VerfasserIn] |
|---|
| | Zdanowicz, Christian [VerfasserIn] |
|---|
| | Koerner, Roy [VerfasserIn] |
|---|
| | Fisher, David [VerfasserIn] |
|---|
| Titel: | Predominance of industrial Pb in recent snow (1994-2004) and ice (1842-1996) from Devon Island, Arctic Canada |
|---|
| Verf.angabe: | William Shotyk, Jiancheng Zheng, Michael Krachler, Christian Zdanowicz, Roy Koerner, David Fisher |
|---|
| E-Jahr: | 2005 |
|---|
| Jahr: | 12 November 2005 |
|---|
| Umfang: | 4 S. |
|---|
| Fussnoten: | Gesehen am 29.09.2020 |
|---|
| Titel Quelle: | Enthalten in: Geophysical research letters |
|---|
| Ort Quelle: | Hoboken, NJ : Wiley, 1974 |
|---|
| Jahr Quelle: | 2005 |
|---|
| Band/Heft Quelle: | 32(2005,21) Artikel-Nummer L21814, 4 Seiten |
|---|
| ISSN Quelle: | 1944-8007 |
|---|
| 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 (206Pb, 207Pb, 208Pb) confirm that anthropogenic sources continue to dominate atmospheric Pb inputs. Unlike snow from Greenland which receives Pb predominantly from the U.S. (206Pb/207Pb ≈ 1.2), snow from Devon Island is less radiogenic (206Pb/207Pb ≈ 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. |
|---|
| DOI: | doi:10.1029/2005GL023860 |
|---|
| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext ; Verlag: https://doi.org/10.1029/2005GL023860 |
|---|
| | Volltext: https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2005GL023860 |
|---|
| | DOI: https://doi.org/10.1029/2005GL023860 |
|---|
| Datenträger: | Online-Ressource |
|---|
| Sprache: | eng |
|---|
| K10plus-PPN: | 173393524X |
|---|
| Verknüpfungen: | → Zeitschrift |
|---|
Predominance of industrial Pb in recent snow (1994-2004) and ice (1842-1996) from Devon Island, Arctic Canada / Shotyk, William [VerfasserIn]; 12 November 2005 (Online-Ressource)
