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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ftphbern:oai:phrepo.phbern.ch:7181 2024-04-14T08:04:33+00:00 Continuous Flow Analysis of Labile Iron in Ice-Cores Hiscock, William T. Fischer, Hubertus Bigler, Matthias Gfeller, Gideon Leuenberger, Daiana Mini, Olivia 2013 application/pdf https://phrepo.phbern.ch/7181/ eng eng https://phrepo.phbern.ch/7181/1/hiscock-et-al-2013-continuous-flow-analysis-of-labile-iron-in-ice-cores.pdf Hiscock, William T.; 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. 10.1021/es3047087 <http://dx.doi.org/10.1021/es3047087> 10.1021/es3047087 0013-936X https://phrepo.phbern.ch/7181/ info:eu-repo/semantics/restrictedAccess Hiscock, William T.; 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. 10.1021/es3047087 <http://dx.doi.org/10.1021/es3047087> info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2013 ftphbern https://doi.org/10.1021/es3047087 2024-03-18T18:14:55Z 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 REPO PHBern (Open Access Repository Bern University of Teacher Education) Antarctic Byrd Greenland The Antarctic Environmental Science & Technology 47 9 4416 4425 |
institution |
Open Polar |
collection |
REPO PHBern (Open Access Repository Bern University of Teacher Education) |
op_collection_id |
ftphbern |
language |
English |
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 T. Fischer, Hubertus Bigler, Matthias Gfeller, Gideon Leuenberger, Daiana Mini, Olivia |
spellingShingle |
Hiscock, William T. Fischer, Hubertus Bigler, Matthias Gfeller, Gideon Leuenberger, Daiana Mini, Olivia Continuous Flow Analysis of Labile Iron in Ice-Cores |
author_facet |
Hiscock, William T. Fischer, Hubertus Bigler, Matthias Gfeller, Gideon Leuenberger, Daiana Mini, Olivia |
author_sort |
Hiscock, William T. |
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 |
publishDate |
2013 |
url |
https://phrepo.phbern.ch/7181/ |
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 T.; 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. 10.1021/es3047087 <http://dx.doi.org/10.1021/es3047087> |
op_relation |
https://phrepo.phbern.ch/7181/1/hiscock-et-al-2013-continuous-flow-analysis-of-labile-iron-in-ice-cores.pdf Hiscock, William T.; 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. 10.1021/es3047087 <http://dx.doi.org/10.1021/es3047087> 10.1021/es3047087 0013-936X https://phrepo.phbern.ch/7181/ |
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 |
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1796301152767180800 |