Application of the flow‐through analyses of ammonia and calcium in ice core and fresh water by fluorometric detection
Abstract A flow‐through analyzer that can determine trace amounts of chemical components in ice cores was examined. To obtain the vertical profiles of ammonia and calcium in the ice core, which can be a measure of the climate change, sensitive fluorescence signals were examined. For the determinatio...
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crwiley:10.1002/fact.1003 2024-06-02T07:57:23+00:00 Application of the flow‐through analyses of ammonia and calcium in ice core and fresh water by fluorometric detection Maruo, Masahiro Nakayama, Eiichiro Obata, Hajime Kamiyama, Kokichi Kimoto, Takashi 2001 http://dx.doi.org/10.1002/fact.1003 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Ffact.1003 https://onlinelibrary.wiley.com/doi/pdf/10.1002/fact.1003 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Field Analytical Chemistry & Technology volume 5, issue 1-2, page 29-36 ISSN 1086-900X 1520-6521 journal-article 2001 crwiley https://doi.org/10.1002/fact.1003 2024-05-03T11:43:29Z Abstract A flow‐through analyzer that can determine trace amounts of chemical components in ice cores was examined. To obtain the vertical profiles of ammonia and calcium in the ice core, which can be a measure of the climate change, sensitive fluorescence signals were examined. For the determination of ammonia, a reaction with o ‐phthalaldehyde and sulfite salt was performed. This system had the potential to measure down to 2 nM, with a 1‐mm ice‐core resolution, equivalent to the thickness of the monthly ammonia profiles during the last interglacial maximum. A trace calcium analyzer was simultaneously examined, with the use of the fluorescent enhancement of Fura2 with a detection limit of 15 nM. Ammonia and calcium in the Antarctic ice core showed similar variation patterns, different from that of the Greenland ice core. The ammonia analyzer was also applied to the analysis of lake water. © 2001 John Wiley & Sons, Inc. Field Analyt Chem Technol 5: 29–36, 2001 Article in Journal/Newspaper Antarc* Antarctic Greenland Greenland ice core ice core Wiley Online Library Antarctic Greenland The Antarctic Field Analytical Chemistry & Technology 5 1-2 29 36 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract A flow‐through analyzer that can determine trace amounts of chemical components in ice cores was examined. To obtain the vertical profiles of ammonia and calcium in the ice core, which can be a measure of the climate change, sensitive fluorescence signals were examined. For the determination of ammonia, a reaction with o ‐phthalaldehyde and sulfite salt was performed. This system had the potential to measure down to 2 nM, with a 1‐mm ice‐core resolution, equivalent to the thickness of the monthly ammonia profiles during the last interglacial maximum. A trace calcium analyzer was simultaneously examined, with the use of the fluorescent enhancement of Fura2 with a detection limit of 15 nM. Ammonia and calcium in the Antarctic ice core showed similar variation patterns, different from that of the Greenland ice core. The ammonia analyzer was also applied to the analysis of lake water. © 2001 John Wiley & Sons, Inc. Field Analyt Chem Technol 5: 29–36, 2001 |
format |
Article in Journal/Newspaper |
author |
Maruo, Masahiro Nakayama, Eiichiro Obata, Hajime Kamiyama, Kokichi Kimoto, Takashi |
spellingShingle |
Maruo, Masahiro Nakayama, Eiichiro Obata, Hajime Kamiyama, Kokichi Kimoto, Takashi Application of the flow‐through analyses of ammonia and calcium in ice core and fresh water by fluorometric detection |
author_facet |
Maruo, Masahiro Nakayama, Eiichiro Obata, Hajime Kamiyama, Kokichi Kimoto, Takashi |
author_sort |
Maruo, Masahiro |
title |
Application of the flow‐through analyses of ammonia and calcium in ice core and fresh water by fluorometric detection |
title_short |
Application of the flow‐through analyses of ammonia and calcium in ice core and fresh water by fluorometric detection |
title_full |
Application of the flow‐through analyses of ammonia and calcium in ice core and fresh water by fluorometric detection |
title_fullStr |
Application of the flow‐through analyses of ammonia and calcium in ice core and fresh water by fluorometric detection |
title_full_unstemmed |
Application of the flow‐through analyses of ammonia and calcium in ice core and fresh water by fluorometric detection |
title_sort |
application of the flow‐through analyses of ammonia and calcium in ice core and fresh water by fluorometric detection |
publisher |
Wiley |
publishDate |
2001 |
url |
http://dx.doi.org/10.1002/fact.1003 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Ffact.1003 https://onlinelibrary.wiley.com/doi/pdf/10.1002/fact.1003 |
geographic |
Antarctic Greenland The Antarctic |
geographic_facet |
Antarctic Greenland The Antarctic |
genre |
Antarc* Antarctic Greenland Greenland ice core ice core |
genre_facet |
Antarc* Antarctic Greenland Greenland ice core ice core |
op_source |
Field Analytical Chemistry & Technology volume 5, issue 1-2, page 29-36 ISSN 1086-900X 1520-6521 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/fact.1003 |
container_title |
Field Analytical Chemistry & Technology |
container_volume |
5 |
container_issue |
1-2 |
container_start_page |
29 |
op_container_end_page |
36 |
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1800740536605212672 |