Ultra-trace analysis of Hg in alkaline lavas and regolith from James Ross Island
Abstract 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 spectromet...
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crcambridgeupr:10.1017/s0954102014000819 2024-04-07T07:47:33+00:00 Ultra-trace analysis of Hg in alkaline lavas and regolith from James Ross Island Coufalík, Pavel Zvěřina, Ondřej Krmíček, Lukáš Pokorný, Richard Komárek, Josef 2014 http://dx.doi.org/10.1017/s0954102014000819 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102014000819 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 27, issue 3, page 281-290 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2014 crcambridgeupr https://doi.org/10.1017/s0954102014000819 2024-03-08T00:33:54Z Abstract 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 Antarctic Science Antarctica Greenland James Ross Island Ross Island Cambridge University Press Antarctic Ross Island Greenland Antarctic Science 27 3 281 290 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
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Geology Ecology, Evolution, Behavior and Systematics Oceanography Coufalík, Pavel Zvěřina, Ondřej Krmíček, Lukáš Pokorný, Richard Komárek, Josef Ultra-trace analysis of Hg in alkaline lavas and regolith from James Ross Island |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract 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, Pavel Zvěřina, Ondřej Krmíček, Lukáš Pokorný, Richard Komárek, Josef |
author_facet |
Coufalík, Pavel Zvěřina, Ondřej Krmíček, Lukáš Pokorný, Richard Komárek, Josef |
author_sort |
Coufalík, 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 |
publisher |
Cambridge University Press (CUP) |
publishDate |
2014 |
url |
http://dx.doi.org/10.1017/s0954102014000819 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102014000819 |
geographic |
Antarctic Ross Island Greenland |
geographic_facet |
Antarctic Ross Island Greenland |
genre |
Antarc* Antarctic Antarctic Science Antarctica Greenland James Ross Island Ross Island |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica Greenland James Ross Island Ross Island |
op_source |
Antarctic Science volume 27, issue 3, page 281-290 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102014000819 |
container_title |
Antarctic Science |
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27 |
container_issue |
3 |
container_start_page |
281 |
op_container_end_page |
290 |
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1795674674887131136 |