Continuous Flow Analysis of labile iron in ice-cores
The important active and passive role of mineral dust aerosol in the climate and the global carbon cycle over the last glacial/interglacial cycles has been recognized. However, little data on the most important aeolian dust-derived biological micronutrient, iron (Fe), has so far been available from...
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ftunivbern:oai:boris.unibe.ch:47727 2023-08-20T04:00:59+02:00 Continuous Flow Analysis of labile iron in ice-cores Hiscock, William Thomas Fischer, Hubertus Bigler, Matthias Gfeller, Gideon Leuenberger, Daiana Mini, Olivia 2013 application/pdf https://boris.unibe.ch/47727/1/es3047087.pdf https://boris.unibe.ch/47727/ eng eng ACS Publications https://boris.unibe.ch/47727/ info:eu-repo/semantics/restrictedAccess Hiscock, William Thomas; Fischer, Hubertus; Bigler, Matthias; Gfeller, Gideon; Leuenberger, Daiana; Mini, Olivia (2013). Continuous Flow Analysis of labile iron in ice-cores. Environmental science & technology, 47(9), pp. 4416-4425. ACS Publications 10.1021/es3047087 <http://dx.doi.org/10.1021/es3047087> 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2013 ftunivbern https://doi.org/10.1021/es3047087 2023-07-31T21:06:02Z The important active and passive role of mineral dust aerosol in the climate and the global carbon cycle over the last glacial/interglacial cycles has been recognized. However, little data on the most important aeolian dust-derived biological micronutrient, iron (Fe), has so far been available from ice-cores from Greenland or Antarctica. Furthermore, Fe deposition reconstructions derived from the palaeoproxies particulate dust and calcium differ significantly from the Fe flux data available. The ability to measure high temporal resolution Fe data in polar ice-cores is crucial for the study of the timing and magnitude of relationships between geochemical events and biological responses in the open ocean. This work adapts an existing flow injection analysis (FIA) methodology for low-level trace Fe determinations with an existing glaciochemical analysis system, continuous flow analysis (CFA) of ice-cores. Fe-induced oxidation of N,N′-dimethyl-p-pheylenediamine (DPD) is used to quantify the biologically more important and easily leachable Fe fraction released in a controlled digestion step at pH ∼1.0. The developed method was successfully applied to the determination of labile Fe in ice-core samples collected from the Antarctic Byrd ice-core and the Greenland Ice-Core Project (GRIP) ice-core. Article in Journal/Newspaper Antarc* Antarctic Antarctica Greenland Greenland ice core Greenland Ice core Project GRIP ice core BORIS (Bern Open Repository and Information System, University of Bern) Antarctic Byrd Greenland The Antarctic Environmental Science & Technology 47 9 4416 4425 |
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Open Polar |
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BORIS (Bern Open Repository and Information System, University of Bern) |
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ftunivbern |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics Hiscock, William Thomas Fischer, Hubertus Bigler, Matthias Gfeller, Gideon Leuenberger, Daiana Mini, Olivia Continuous Flow Analysis of labile iron in ice-cores |
topic_facet |
530 Physics |
description |
The important active and passive role of mineral dust aerosol in the climate and the global carbon cycle over the last glacial/interglacial cycles has been recognized. However, little data on the most important aeolian dust-derived biological micronutrient, iron (Fe), has so far been available from ice-cores from Greenland or Antarctica. Furthermore, Fe deposition reconstructions derived from the palaeoproxies particulate dust and calcium differ significantly from the Fe flux data available. The ability to measure high temporal resolution Fe data in polar ice-cores is crucial for the study of the timing and magnitude of relationships between geochemical events and biological responses in the open ocean. This work adapts an existing flow injection analysis (FIA) methodology for low-level trace Fe determinations with an existing glaciochemical analysis system, continuous flow analysis (CFA) of ice-cores. Fe-induced oxidation of N,N′-dimethyl-p-pheylenediamine (DPD) is used to quantify the biologically more important and easily leachable Fe fraction released in a controlled digestion step at pH ∼1.0. The developed method was successfully applied to the determination of labile Fe in ice-core samples collected from the Antarctic Byrd ice-core and the Greenland Ice-Core Project (GRIP) ice-core. |
format |
Article in Journal/Newspaper |
author |
Hiscock, William Thomas Fischer, Hubertus Bigler, Matthias Gfeller, Gideon Leuenberger, Daiana Mini, Olivia |
author_facet |
Hiscock, William Thomas Fischer, Hubertus Bigler, Matthias Gfeller, Gideon Leuenberger, Daiana Mini, Olivia |
author_sort |
Hiscock, William Thomas |
title |
Continuous Flow Analysis of labile iron in ice-cores |
title_short |
Continuous Flow Analysis of labile iron in ice-cores |
title_full |
Continuous Flow Analysis of labile iron in ice-cores |
title_fullStr |
Continuous Flow Analysis of labile iron in ice-cores |
title_full_unstemmed |
Continuous Flow Analysis of labile iron in ice-cores |
title_sort |
continuous flow analysis of labile iron in ice-cores |
publisher |
ACS Publications |
publishDate |
2013 |
url |
https://boris.unibe.ch/47727/1/es3047087.pdf https://boris.unibe.ch/47727/ |
geographic |
Antarctic Byrd Greenland The Antarctic |
geographic_facet |
Antarctic Byrd Greenland The Antarctic |
genre |
Antarc* Antarctic Antarctica Greenland Greenland ice core Greenland Ice core Project GRIP ice core |
genre_facet |
Antarc* Antarctic Antarctica Greenland Greenland ice core Greenland Ice core Project GRIP ice core |
op_source |
Hiscock, William Thomas; Fischer, Hubertus; Bigler, Matthias; Gfeller, Gideon; Leuenberger, Daiana; Mini, Olivia (2013). Continuous Flow Analysis of labile iron in ice-cores. Environmental science & technology, 47(9), pp. 4416-4425. ACS Publications 10.1021/es3047087 <http://dx.doi.org/10.1021/es3047087> |
op_relation |
https://boris.unibe.ch/47727/ |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1021/es3047087 |
container_title |
Environmental Science & Technology |
container_volume |
47 |
container_issue |
9 |
container_start_page |
4416 |
op_container_end_page |
4425 |
_version_ |
1774721884899770368 |