Effects of iron surface adsorption and sample handling on iron solubility measurements
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 ea...
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Online Access: | https://oceanrep.geomar.de/id/eprint/26559/ https://oceanrep.geomar.de/id/eprint/26559/1/Schlosser%20et.al.pdf https://doi.org/10.1016/j.marchem.2011.07.008 |
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ftoceanrep:oai:oceanrep.geomar.de:26559 2023-05-15T18:25:25+02:00 Effects of iron surface adsorption and sample handling on iron solubility measurements Schlosser, Christian De La Rocha, C. L. Croot, Peter 2011-12 text https://oceanrep.geomar.de/id/eprint/26559/ https://oceanrep.geomar.de/id/eprint/26559/1/Schlosser%20et.al.pdf https://doi.org/10.1016/j.marchem.2011.07.008 en eng Elsevier https://oceanrep.geomar.de/id/eprint/26559/1/Schlosser%20et.al.pdf Schlosser, C. , De La Rocha, C. L. and Croot, P. (2011) Effects of iron surface adsorption and sample handling on iron solubility measurements. Marine Chemistry, 127 (1-4). pp. 48-55. DOI 10.1016/j.marchem.2011.07.008 <https://doi.org/10.1016/j.marchem.2011.07.008>. doi:10.1016/j.marchem.2011.07.008 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2011 ftoceanrep https://doi.org/10.1016/j.marchem.2011.07.008 2023-04-07T15:16:06Z 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 OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Southern Ocean Marine Chemistry 127 1-4 48 55 |
institution |
Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Schlosser, Christian De La Rocha, C. L. Croot, Peter |
spellingShingle |
Schlosser, Christian De La Rocha, C. L. Croot, Peter Effects of iron surface adsorption and sample handling on iron solubility measurements |
author_facet |
Schlosser, Christian De La Rocha, C. L. Croot, Peter |
author_sort |
Schlosser, Christian |
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 |
Elsevier |
publishDate |
2011 |
url |
https://oceanrep.geomar.de/id/eprint/26559/ https://oceanrep.geomar.de/id/eprint/26559/1/Schlosser%20et.al.pdf 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_relation |
https://oceanrep.geomar.de/id/eprint/26559/1/Schlosser%20et.al.pdf Schlosser, C. , De La Rocha, C. L. and Croot, P. (2011) Effects of iron surface adsorption and sample handling on iron solubility measurements. Marine Chemistry, 127 (1-4). pp. 48-55. DOI 10.1016/j.marchem.2011.07.008 <https://doi.org/10.1016/j.marchem.2011.07.008>. doi:10.1016/j.marchem.2011.07.008 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
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_ |
1766206865951162368 |