Thallium and cadmium in recent snow and firn layers in the Canadian Arctic by atomic fluorescence and absorption spectrometries
Compared to the Antarctic and Greenland, the Canadian Arctic has seen extremely few trace metal studies on snow and ice. Surface, subsurface and depth samples of snow and firns were collected from the Agassiz Ice Cap, Ellesmere Island, Canada using clean room practices. Results for Tl (directly dete...
Published in: | Analytical and Bioanalytical Chemistry |
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Springer-Verlag
1996
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Online Access: | https://hdl.handle.net/2027.42/46458 http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=15045403&dopt=citation https://doi.org/10.1007/s0021663550332 |
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ftumdeepblue:oai:deepblue.lib.umich.edu:2027.42/46458 2023-08-20T04:01:17+02:00 Thallium and cadmium in recent snow and firn layers in the Canadian Arctic by atomic fluorescence and absorption spectrometries Lawson, G. S. Nriagu, Jerome O. Lechner, J. Desrosiers, R. Cheam, V. School of Public Health, Department of Environmental and Industrial Health, , University of Michigan, , , Ann Arbor, , MI, , 48109-2029, , USA, National Water Research Institute (CCIW), , , Box 5050, , Burlington, , Ontario, , Canada, , L7R 4A6, Ann Arbor 1996-06 155400 bytes 3115 bytes application/pdf text/plain https://hdl.handle.net/2027.42/46458 http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=15045403&dopt=citation https://doi.org/10.1007/s0021663550332 en_US eng Springer-Verlag Cheam, V.; Lawson, G.; Lechner, J.; Desrosiers, R.; Nriagu, J.; (1996). "Thallium and cadmium in recent snow and firn layers in the Canadian Arctic by atomic fluorescence and absorption spectrometries." Fresenius’ Journal of Analytical Chemistry 355 (3-4): 332-335. <http://hdl.handle.net/2027.42/46458> 1618-2642 1618-2650 https://hdl.handle.net/2027.42/46458 http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=15045403&dopt=citation 15045403 http://dx.doi.org/10.1007/s0021663550332 Fresenius’ Journal of Analytical Chemistry Chemistry Science Article 1996 ftumdeepblue https://doi.org/10.1007/s0021663550332 2023-07-31T20:40:31Z Compared to the Antarctic and Greenland, the Canadian Arctic has seen extremely few trace metal studies on snow and ice. Surface, subsurface and depth samples of snow and firns were collected from the Agassiz Ice Cap, Ellesmere Island, Canada using clean room practices. Results for Tl (directly determined by LEAFS) and Cd (determined by GFAAS) are reported. To our knowledge, the thallium depth profile presented here is the first one so far reported for both polar systems, Greenland or other places. Tl concentrations peak in the winter-spring periods, when the Arctic atmosphere is loaded with foreign pollutants and suspended particulates which sometime severely reduce the visibility, creating a phenomenon commonly known as the Arctic haze. These results are in general accordance with the historical Arctic air pollution and acidity/conductivity data on ice cores. Surface concentrations of Tl range from 0.3 to 0.9 pg/g, which is a few times higher than those found in Antarctica. Cadmium shows seasonal characteristics similar to Tl although there is not a definite correlation between the two. However, there could be two predominant origins of metals which were deposited in the snow: Eurasian origin in January–April corresponding to high level metals (main deposition), and a less definite origin in May–December corresponding to low level metals. Peer Reviewed http://deepblue.lib.umich.edu/bitstream/2027.42/46458/1/216_1996_Article_63550332.pdf Article in Journal/Newspaper Antarc* Antarctic Antarctica Arctic Arctic Ellesmere Island Greenland Ice cap University of Michigan: Deep Blue Arctic Antarctic The Antarctic Ellesmere Island Canada Greenland Agassiz Ice Cap ENVELOPE(-75.996,-75.996,80.252,80.252) Analytical and Bioanalytical Chemistry 355 3-4 332 335 |
institution |
Open Polar |
collection |
University of Michigan: Deep Blue |
op_collection_id |
ftumdeepblue |
language |
English |
topic |
Chemistry Science |
spellingShingle |
Chemistry Science Lawson, G. S. Nriagu, Jerome O. Lechner, J. Desrosiers, R. Cheam, V. Thallium and cadmium in recent snow and firn layers in the Canadian Arctic by atomic fluorescence and absorption spectrometries |
topic_facet |
Chemistry Science |
description |
Compared to the Antarctic and Greenland, the Canadian Arctic has seen extremely few trace metal studies on snow and ice. Surface, subsurface and depth samples of snow and firns were collected from the Agassiz Ice Cap, Ellesmere Island, Canada using clean room practices. Results for Tl (directly determined by LEAFS) and Cd (determined by GFAAS) are reported. To our knowledge, the thallium depth profile presented here is the first one so far reported for both polar systems, Greenland or other places. Tl concentrations peak in the winter-spring periods, when the Arctic atmosphere is loaded with foreign pollutants and suspended particulates which sometime severely reduce the visibility, creating a phenomenon commonly known as the Arctic haze. These results are in general accordance with the historical Arctic air pollution and acidity/conductivity data on ice cores. Surface concentrations of Tl range from 0.3 to 0.9 pg/g, which is a few times higher than those found in Antarctica. Cadmium shows seasonal characteristics similar to Tl although there is not a definite correlation between the two. However, there could be two predominant origins of metals which were deposited in the snow: Eurasian origin in January–April corresponding to high level metals (main deposition), and a less definite origin in May–December corresponding to low level metals. Peer Reviewed http://deepblue.lib.umich.edu/bitstream/2027.42/46458/1/216_1996_Article_63550332.pdf |
author2 |
School of Public Health, Department of Environmental and Industrial Health, , University of Michigan, , , Ann Arbor, , MI, , 48109-2029, , USA, National Water Research Institute (CCIW), , , Box 5050, , Burlington, , Ontario, , Canada, , L7R 4A6, Ann Arbor |
format |
Article in Journal/Newspaper |
author |
Lawson, G. S. Nriagu, Jerome O. Lechner, J. Desrosiers, R. Cheam, V. |
author_facet |
Lawson, G. S. Nriagu, Jerome O. Lechner, J. Desrosiers, R. Cheam, V. |
author_sort |
Lawson, G. S. |
title |
Thallium and cadmium in recent snow and firn layers in the Canadian Arctic by atomic fluorescence and absorption spectrometries |
title_short |
Thallium and cadmium in recent snow and firn layers in the Canadian Arctic by atomic fluorescence and absorption spectrometries |
title_full |
Thallium and cadmium in recent snow and firn layers in the Canadian Arctic by atomic fluorescence and absorption spectrometries |
title_fullStr |
Thallium and cadmium in recent snow and firn layers in the Canadian Arctic by atomic fluorescence and absorption spectrometries |
title_full_unstemmed |
Thallium and cadmium in recent snow and firn layers in the Canadian Arctic by atomic fluorescence and absorption spectrometries |
title_sort |
thallium and cadmium in recent snow and firn layers in the canadian arctic by atomic fluorescence and absorption spectrometries |
publisher |
Springer-Verlag |
publishDate |
1996 |
url |
https://hdl.handle.net/2027.42/46458 http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=15045403&dopt=citation https://doi.org/10.1007/s0021663550332 |
long_lat |
ENVELOPE(-75.996,-75.996,80.252,80.252) |
geographic |
Arctic Antarctic The Antarctic Ellesmere Island Canada Greenland Agassiz Ice Cap |
geographic_facet |
Arctic Antarctic The Antarctic Ellesmere Island Canada Greenland Agassiz Ice Cap |
genre |
Antarc* Antarctic Antarctica Arctic Arctic Ellesmere Island Greenland Ice cap |
genre_facet |
Antarc* Antarctic Antarctica Arctic Arctic Ellesmere Island Greenland Ice cap |
op_relation |
Cheam, V.; Lawson, G.; Lechner, J.; Desrosiers, R.; Nriagu, J.; (1996). "Thallium and cadmium in recent snow and firn layers in the Canadian Arctic by atomic fluorescence and absorption spectrometries." Fresenius’ Journal of Analytical Chemistry 355 (3-4): 332-335. <http://hdl.handle.net/2027.42/46458> 1618-2642 1618-2650 https://hdl.handle.net/2027.42/46458 http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=15045403&dopt=citation 15045403 http://dx.doi.org/10.1007/s0021663550332 Fresenius’ Journal of Analytical Chemistry |
op_doi |
https://doi.org/10.1007/s0021663550332 |
container_title |
Analytical and Bioanalytical Chemistry |
container_volume |
355 |
container_issue |
3-4 |
container_start_page |
332 |
op_container_end_page |
335 |
_version_ |
1774724089948143616 |