First discrete iron(II) records from Dome C (Antarctica) and the Holtedahlfonna glacier (Svalbard)
Fe(II) is more soluble and bioavailable than Fe(III) species, therefore the investigation of their relative abundance and redox processes is relevant to better assess the supply of bioavailable iron to the ocean and its impact on marine productivity. In this context, we present a discrete chemilumin...
Published in: | Chemosphere |
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Online Access: | http://hdl.handle.net/10278/3735311 https://doi.org/10.1016/j.chemosphere.2020.129335 |
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ftuniveneziairis:oai:iris.unive.it:10278/3735311 2024-04-14T08:01:33+00:00 First discrete iron(II) records from Dome C (Antarctica) and the Holtedahlfonna glacier (Svalbard) Burgay F. Barbaro E. Cappelletti D. Turetta C. Gallet J. -C. Isaksson E. Stenni B. Dreossi G. Scoto F. Barbante C. Spolaor A. Burgay, F. Barbaro, E. Cappelletti, D. Turetta, C. Gallet, J. -C. Isaksson, E. Stenni, B. Dreossi, G. Scoto, F. Barbante, C. Spolaor, A. 2021 http://hdl.handle.net/10278/3735311 https://doi.org/10.1016/j.chemosphere.2020.129335 eng eng info:eu-repo/semantics/altIdentifier/pmid/33352366 info:eu-repo/semantics/altIdentifier/wos/WOS:000608802100129 volume:267 firstpage:129335 journal:CHEMOSPHERE http://hdl.handle.net/10278/3735311 doi:10.1016/j.chemosphere.2020.129335 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85097746353 info:eu-repo/semantics/closedAccess Chemiluminescence Dome C Ice core Iron speciation Svalbard Settore GEO/08 - Geochimica e Vulcanologia info:eu-repo/semantics/article 2021 ftuniveneziairis https://doi.org/10.1016/j.chemosphere.2020.129335 2024-03-21T18:15:34Z Fe(II) is more soluble and bioavailable than Fe(III) species, therefore the investigation of their relative abundance and redox processes is relevant to better assess the supply of bioavailable iron to the ocean and its impact on marine productivity. In this context, we present a discrete chemiluminescence-based method for the determination of Fe(II) in firn matrices. The method was applied on discrete samples from a snow pit collected at Dome C (DC, Antarctica) and on a shallow firn core from the Holtedahlfonna glacier (HDF, Svalbard), providing the first Fe(II) record from both Antarctica and Svalbard. The method showed low detection limits (0.006 ng g−1 for DC and 0.003 ng g−1 for the HDF) and a precision ranging from 3% to 20% RSD. Fe(II) concentrations ranged between the LoD and 0.077 ng g−1 and between the LoD and 0.300 ng g−1 for the Antarctic and Arctic samples, respectively. The Fe(II) contribution with respect to the total dissolved Fe was comparable in both sites accounting, on average, for 5% and 3%, respectively. We found that Fe(II) correctly identified the Pinatubo/Cerro Hudson eruption in the DC record, demonstrating its reliability as volcanic tracer, while, on the HDF core, we provided the first preliminary insight on the processes that might influence Fe speciation in firn matrices (i.e. organic ligands and pH influences). Article in Journal/Newspaper Antarc* Antarctic Antarctica Arctic glacier ice core Svalbard Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Arctic Antarctic The Antarctic Svalbard Hudson Holtedahlfonna ENVELOPE(13.730,13.730,79.011,79.011) Chemosphere 267 129335 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
English |
topic |
Chemiluminescence Dome C Ice core Iron speciation Svalbard Settore GEO/08 - Geochimica e Vulcanologia |
spellingShingle |
Chemiluminescence Dome C Ice core Iron speciation Svalbard Settore GEO/08 - Geochimica e Vulcanologia Burgay F. Barbaro E. Cappelletti D. Turetta C. Gallet J. -C. Isaksson E. Stenni B. Dreossi G. Scoto F. Barbante C. Spolaor A. First discrete iron(II) records from Dome C (Antarctica) and the Holtedahlfonna glacier (Svalbard) |
topic_facet |
Chemiluminescence Dome C Ice core Iron speciation Svalbard Settore GEO/08 - Geochimica e Vulcanologia |
description |
Fe(II) is more soluble and bioavailable than Fe(III) species, therefore the investigation of their relative abundance and redox processes is relevant to better assess the supply of bioavailable iron to the ocean and its impact on marine productivity. In this context, we present a discrete chemiluminescence-based method for the determination of Fe(II) in firn matrices. The method was applied on discrete samples from a snow pit collected at Dome C (DC, Antarctica) and on a shallow firn core from the Holtedahlfonna glacier (HDF, Svalbard), providing the first Fe(II) record from both Antarctica and Svalbard. The method showed low detection limits (0.006 ng g−1 for DC and 0.003 ng g−1 for the HDF) and a precision ranging from 3% to 20% RSD. Fe(II) concentrations ranged between the LoD and 0.077 ng g−1 and between the LoD and 0.300 ng g−1 for the Antarctic and Arctic samples, respectively. The Fe(II) contribution with respect to the total dissolved Fe was comparable in both sites accounting, on average, for 5% and 3%, respectively. We found that Fe(II) correctly identified the Pinatubo/Cerro Hudson eruption in the DC record, demonstrating its reliability as volcanic tracer, while, on the HDF core, we provided the first preliminary insight on the processes that might influence Fe speciation in firn matrices (i.e. organic ligands and pH influences). |
author2 |
Burgay, F. Barbaro, E. Cappelletti, D. Turetta, C. Gallet, J. -C. Isaksson, E. Stenni, B. Dreossi, G. Scoto, F. Barbante, C. Spolaor, A. |
format |
Article in Journal/Newspaper |
author |
Burgay F. Barbaro E. Cappelletti D. Turetta C. Gallet J. -C. Isaksson E. Stenni B. Dreossi G. Scoto F. Barbante C. Spolaor A. |
author_facet |
Burgay F. Barbaro E. Cappelletti D. Turetta C. Gallet J. -C. Isaksson E. Stenni B. Dreossi G. Scoto F. Barbante C. Spolaor A. |
author_sort |
Burgay F. |
title |
First discrete iron(II) records from Dome C (Antarctica) and the Holtedahlfonna glacier (Svalbard) |
title_short |
First discrete iron(II) records from Dome C (Antarctica) and the Holtedahlfonna glacier (Svalbard) |
title_full |
First discrete iron(II) records from Dome C (Antarctica) and the Holtedahlfonna glacier (Svalbard) |
title_fullStr |
First discrete iron(II) records from Dome C (Antarctica) and the Holtedahlfonna glacier (Svalbard) |
title_full_unstemmed |
First discrete iron(II) records from Dome C (Antarctica) and the Holtedahlfonna glacier (Svalbard) |
title_sort |
first discrete iron(ii) records from dome c (antarctica) and the holtedahlfonna glacier (svalbard) |
publishDate |
2021 |
url |
http://hdl.handle.net/10278/3735311 https://doi.org/10.1016/j.chemosphere.2020.129335 |
long_lat |
ENVELOPE(13.730,13.730,79.011,79.011) |
geographic |
Arctic Antarctic The Antarctic Svalbard Hudson Holtedahlfonna |
geographic_facet |
Arctic Antarctic The Antarctic Svalbard Hudson Holtedahlfonna |
genre |
Antarc* Antarctic Antarctica Arctic glacier ice core Svalbard |
genre_facet |
Antarc* Antarctic Antarctica Arctic glacier ice core Svalbard |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/33352366 info:eu-repo/semantics/altIdentifier/wos/WOS:000608802100129 volume:267 firstpage:129335 journal:CHEMOSPHERE http://hdl.handle.net/10278/3735311 doi:10.1016/j.chemosphere.2020.129335 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85097746353 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.chemosphere.2020.129335 |
container_title |
Chemosphere |
container_volume |
267 |
container_start_page |
129335 |
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1796309521834967040 |