Effects of iron surface adsorption and sample handling on iron solubility measurements
International audience Seawater samples from two separate cruises in the Southern Ocean (ANTXXI/3 (EIFeX) and ANTXXIII/9) were collected for measurements of iron solubility by 55Fe addition. For both sets of samples, a significant loss of the dissolved portion of the added Fe was observed during the...
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Online Access: | https://hal.univ-brest.fr/hal-00660772 https://doi.org/10.1016/j.marchem.2011.07.008 |
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ftunivbrest:oai:HAL:hal-00660772v1 2024-02-11T10:08:48+01:00 Effects of iron surface adsorption and sample handling on iron solubility measurements Schlosser, C. de La Rocha, Christina, L. Croot, Peter, L. Leibniz-Institut für Meereswissenschaften (IFM-GEOMAR) National Oceanography Centre Southampton (NOC) University of Southampton Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Alfred Wegener Institute for Polar and Marine Research (AWI) Plymouth Marine Laboratory (PML) This work was supported by the DFG-Schwerpunktprogramm 1158 Anarktisforschung and DFG grants awarded to Peter L. Croot (CR145/5 and CR145/11-1, contribution to SOPRAN (German SOLAS)) and to Christina De La Rocha (DE1455/1-1) 2011 https://hal.univ-brest.fr/hal-00660772 https://doi.org/10.1016/j.marchem.2011.07.008 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marchem.2011.07.008 hal-00660772 https://hal.univ-brest.fr/hal-00660772 doi:10.1016/j.marchem.2011.07.008 ISSN: 0304-4203 Marine Chemistry https://hal.univ-brest.fr/hal-00660772 Marine Chemistry, 2011, 127, pp.48-55. ⟨10.1016/j.marchem.2011.07.008⟩ Fe solubility Southern Ocean [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2011 ftunivbrest https://doi.org/10.1016/j.marchem.2011.07.008 2024-01-23T23:36:40Z International audience Seawater samples from two separate cruises in the Southern Ocean (ANTXXI/3 (EIFeX) and ANTXXIII/9) were collected for measurements of iron solubility by 55Fe addition. For both sets of samples, a significant loss of the dissolved portion of the added Fe was observed during the 72 hour duration of each Fe solubility measurement incubation. The decrease in dissolved Fe was related to Fe precipitation and adsorption onto bottle walls. The dissolved Fe data can be successfully modeled assuming that two colloidal Fe species (organically complexed Fe and inorganic Fe) were quickly formed following the addition of dissolved Fe(III) to the seawater. Model results indicate that Fe dissociated from weak organic complexes was the main contributor to wall sorption during the first 6 h following Fe addition, and that most of the Fe deposited after the first 6 h arose from the dissociation of colloidal inorganic species. Effects of sample freezing on Fe solubility measurements are also discussed. Article in Journal/Newspaper Southern Ocean Université de Bretagne Occidentale: HAL Southern Ocean Marine Chemistry 127 1-4 48 55 |
institution |
Open Polar |
collection |
Université de Bretagne Occidentale: HAL |
op_collection_id |
ftunivbrest |
language |
English |
topic |
Fe solubility Southern Ocean [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
Fe solubility Southern Ocean [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Schlosser, C. de La Rocha, Christina, L. Croot, Peter, L. Effects of iron surface adsorption and sample handling on iron solubility measurements |
topic_facet |
Fe solubility Southern Ocean [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience Seawater samples from two separate cruises in the Southern Ocean (ANTXXI/3 (EIFeX) and ANTXXIII/9) were collected for measurements of iron solubility by 55Fe addition. For both sets of samples, a significant loss of the dissolved portion of the added Fe was observed during the 72 hour duration of each Fe solubility measurement incubation. The decrease in dissolved Fe was related to Fe precipitation and adsorption onto bottle walls. The dissolved Fe data can be successfully modeled assuming that two colloidal Fe species (organically complexed Fe and inorganic Fe) were quickly formed following the addition of dissolved Fe(III) to the seawater. Model results indicate that Fe dissociated from weak organic complexes was the main contributor to wall sorption during the first 6 h following Fe addition, and that most of the Fe deposited after the first 6 h arose from the dissociation of colloidal inorganic species. Effects of sample freezing on Fe solubility measurements are also discussed. |
author2 |
Leibniz-Institut für Meereswissenschaften (IFM-GEOMAR) National Oceanography Centre Southampton (NOC) University of Southampton Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Alfred Wegener Institute for Polar and Marine Research (AWI) Plymouth Marine Laboratory (PML) This work was supported by the DFG-Schwerpunktprogramm 1158 Anarktisforschung and DFG grants awarded to Peter L. Croot (CR145/5 and CR145/11-1, contribution to SOPRAN (German SOLAS)) and to Christina De La Rocha (DE1455/1-1) |
format |
Article in Journal/Newspaper |
author |
Schlosser, C. de La Rocha, Christina, L. Croot, Peter, L. |
author_facet |
Schlosser, C. de La Rocha, Christina, L. Croot, Peter, L. |
author_sort |
Schlosser, C. |
title |
Effects of iron surface adsorption and sample handling on iron solubility measurements |
title_short |
Effects of iron surface adsorption and sample handling on iron solubility measurements |
title_full |
Effects of iron surface adsorption and sample handling on iron solubility measurements |
title_fullStr |
Effects of iron surface adsorption and sample handling on iron solubility measurements |
title_full_unstemmed |
Effects of iron surface adsorption and sample handling on iron solubility measurements |
title_sort |
effects of iron surface adsorption and sample handling on iron solubility measurements |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.univ-brest.fr/hal-00660772 https://doi.org/10.1016/j.marchem.2011.07.008 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
ISSN: 0304-4203 Marine Chemistry https://hal.univ-brest.fr/hal-00660772 Marine Chemistry, 2011, 127, pp.48-55. ⟨10.1016/j.marchem.2011.07.008⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marchem.2011.07.008 hal-00660772 https://hal.univ-brest.fr/hal-00660772 doi:10.1016/j.marchem.2011.07.008 |
op_doi |
https://doi.org/10.1016/j.marchem.2011.07.008 |
container_title |
Marine Chemistry |
container_volume |
127 |
container_issue |
1-4 |
container_start_page |
48 |
op_container_end_page |
55 |
_version_ |
1790608408225775616 |