Ultra-trace analysis of Hg in alkaline lavas and regolith from James Ross Island
Polar regions represent a unique environment for the study of mercury cycling in the global ecosystem. Our research was focused on the assessment of the origin and mobility of mercury in the geochemical cycle in Maritime Antarctic (James Ross Island) by means of atomic absorption spectrometry. Mercu...
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Online Access: | https://doi.org/10.1017/S0954102014000819 http://hdl.handle.net/11104/0246393 |
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ftczacademyscien:oai:asep.lib.cas.cz:CavUnEpca/0443682 2024-02-04T09:54:39+01:00 Ultra-trace analysis of Hg in alkaline lavas and regolith from James Ross Island Coufalík, P. (Pavel) Zvěřina, O. Krmíček, L. (Lukáš) Pokorný, R. Komárek, J. 2015 https://doi.org/10.1017/S0954102014000819 http://hdl.handle.net/11104/0246393 eng eng doi:10.1017/S0954102014000819 urn:pissn: 0954-1020 urn:eissn: 1365-2079 http://hdl.handle.net/11104/0246393 info:eu-repo/semantics/restrictedAccess basaltic volcanite fractionation mercury polar region weathered material info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2015 ftczacademyscien https://doi.org/10.1017/S0954102014000819 2024-01-09T17:31:33Z Polar regions represent a unique environment for the study of mercury cycling in the global ecosystem. Our research was focused on the assessment of the origin and mobility of mercury in the geochemical cycle in Maritime Antarctic (James Ross Island) by means of atomic absorption spectrometry. Mercury content in a set of extrusive (subaerial, subaqueous) and intrusive (dyke) alkaline basalts ranged between 1.6 μg kg-1 (for samples without xenoliths) and 8 μg kg-1 (for samples containing crustal xenoliths). The mercury content in alkaline basalts indicates a very low concentration of mercury in peridotitic mantle sources. Samples of regolith from James Ross Island were subjected to a comprehensive analytical procedure proposed for ultra-trace mercury concentrations involving fractionation and thermal analysis. Total mercury contents in regolith (2.7–11.3 μg kg-1) did not deviate from the natural background in this part of Antarctica. Additionally, the obtained results are about two orders of magnitude smaller than values formerly assumed for primary mercury contents in basaltic lavas. Our results from Antarctica were compared with mercury contents in basaltic rocks from Greenland and the findings were confirmed. It seems that the input of mercury of geological origin into the polar ecosystem is apparently lower than expected. Article in Journal/Newspaper Antarc* Antarctic Antarctica Greenland James Ross Island Ross Island The Czech Academy of Sciences: Publication Activity (ASEP) Antarctic Greenland Ross Island Antarctic Science 27 3 281 290 |
institution |
Open Polar |
collection |
The Czech Academy of Sciences: Publication Activity (ASEP) |
op_collection_id |
ftczacademyscien |
language |
English |
topic |
basaltic volcanite fractionation mercury polar region weathered material |
spellingShingle |
basaltic volcanite fractionation mercury polar region weathered material Coufalík, P. (Pavel) Zvěřina, O. Krmíček, L. (Lukáš) Pokorný, R. Komárek, J. Ultra-trace analysis of Hg in alkaline lavas and regolith from James Ross Island |
topic_facet |
basaltic volcanite fractionation mercury polar region weathered material |
description |
Polar regions represent a unique environment for the study of mercury cycling in the global ecosystem. Our research was focused on the assessment of the origin and mobility of mercury in the geochemical cycle in Maritime Antarctic (James Ross Island) by means of atomic absorption spectrometry. Mercury content in a set of extrusive (subaerial, subaqueous) and intrusive (dyke) alkaline basalts ranged between 1.6 μg kg-1 (for samples without xenoliths) and 8 μg kg-1 (for samples containing crustal xenoliths). The mercury content in alkaline basalts indicates a very low concentration of mercury in peridotitic mantle sources. Samples of regolith from James Ross Island were subjected to a comprehensive analytical procedure proposed for ultra-trace mercury concentrations involving fractionation and thermal analysis. Total mercury contents in regolith (2.7–11.3 μg kg-1) did not deviate from the natural background in this part of Antarctica. Additionally, the obtained results are about two orders of magnitude smaller than values formerly assumed for primary mercury contents in basaltic lavas. Our results from Antarctica were compared with mercury contents in basaltic rocks from Greenland and the findings were confirmed. It seems that the input of mercury of geological origin into the polar ecosystem is apparently lower than expected. |
format |
Article in Journal/Newspaper |
author |
Coufalík, P. (Pavel) Zvěřina, O. Krmíček, L. (Lukáš) Pokorný, R. Komárek, J. |
author_facet |
Coufalík, P. (Pavel) Zvěřina, O. Krmíček, L. (Lukáš) Pokorný, R. Komárek, J. |
author_sort |
Coufalík, P. (Pavel) |
title |
Ultra-trace analysis of Hg in alkaline lavas and regolith from James Ross Island |
title_short |
Ultra-trace analysis of Hg in alkaline lavas and regolith from James Ross Island |
title_full |
Ultra-trace analysis of Hg in alkaline lavas and regolith from James Ross Island |
title_fullStr |
Ultra-trace analysis of Hg in alkaline lavas and regolith from James Ross Island |
title_full_unstemmed |
Ultra-trace analysis of Hg in alkaline lavas and regolith from James Ross Island |
title_sort |
ultra-trace analysis of hg in alkaline lavas and regolith from james ross island |
publishDate |
2015 |
url |
https://doi.org/10.1017/S0954102014000819 http://hdl.handle.net/11104/0246393 |
geographic |
Antarctic Greenland Ross Island |
geographic_facet |
Antarctic Greenland Ross Island |
genre |
Antarc* Antarctic Antarctica Greenland James Ross Island Ross Island |
genre_facet |
Antarc* Antarctic Antarctica Greenland James Ross Island Ross Island |
op_relation |
doi:10.1017/S0954102014000819 urn:pissn: 0954-1020 urn:eissn: 1365-2079 http://hdl.handle.net/11104/0246393 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1017/S0954102014000819 |
container_title |
Antarctic Science |
container_volume |
27 |
container_issue |
3 |
container_start_page |
281 |
op_container_end_page |
290 |
_version_ |
1789974624544489472 |