Laboratory study on coprecipitation of phosphate with ikaite in sea ice
Ikaite (CaCO3�6H2O) has recently been discovered in sea ice, providing first direct evidence of CaCO3 precipitation in sea ice. However, the impact of ikaite precipitation on phosphate (PO4) concentration has not been considered so far. Experiments were set up at pH from 8.5 to 10.0, salinities from...
Published in: | Journal of Geophysical Research: Oceans |
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2014
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Online Access: | https://epic.awi.de/id/eprint/44835/ https://epic.awi.de/id/eprint/44835/1/Hu14GD_DWG_GN.pdf https://hdl.handle.net/10013/epic.51083 https://hdl.handle.net/10013/epic.51083.d001 |
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ftawi:oai:epic.awi.de:44835 2024-09-15T18:34:11+00:00 Laboratory study on coprecipitation of phosphate with ikaite in sea ice Hu, Yu-Bin Dieckmann, Gerhard S. Wolf-Gladrow, Dieter A. Nehrke, Gernot 2014 application/pdf https://epic.awi.de/id/eprint/44835/ https://epic.awi.de/id/eprint/44835/1/Hu14GD_DWG_GN.pdf https://hdl.handle.net/10013/epic.51083 https://hdl.handle.net/10013/epic.51083.d001 unknown https://epic.awi.de/id/eprint/44835/1/Hu14GD_DWG_GN.pdf https://hdl.handle.net/10013/epic.51083.d001 Hu, Y. B. , Dieckmann, G. S. , Wolf-Gladrow, D. A. orcid:0000-0001-9531-8668 and Nehrke, G. orcid:0000-0002-2851-3049 (2014) Laboratory study on coprecipitation of phosphate with ikaite in sea ice , Geophys. Res. Oceans, 119 , pp. 7007-7015 . doi:10.1002/2014JC010079 <https://doi.org/10.1002/2014JC010079> , hdl:10013/epic.51083 EPIC3Geophys. Res. Oceans, 119, pp. 7007-7015 Article isiRev 2014 ftawi https://doi.org/10.1002/2014JC010079 2024-06-24T04:17:43Z Ikaite (CaCO3�6H2O) has recently been discovered in sea ice, providing first direct evidence of CaCO3 precipitation in sea ice. However, the impact of ikaite precipitation on phosphate (PO4) concentration has not been considered so far. Experiments were set up at pH from 8.5 to 10.0, salinities from 0 to 105, temperatures from 24°C to 0°C, and PO4 concentrations from 5 to 50 mmol kg-1 in artificial sea ice brine so as to understand how ikaite precipitation affects the PO4 concentration in sea ice under different conditions. Our results show that PO4 is coprecipitated with ikaite under all experimental conditions. The amount of PO4 removed by ikaite precipitation increases with increasing pH. Changes in salinity (S >=35) as well as temperature have little impact on PO4 removal by ikaite precipitation. The initial PO4 concentration affects the PO4 coprecipitation. These findings may shed some light on the observed variability of PO4 concentration in sea ice. Article in Journal/Newspaper Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Journal of Geophysical Research: Oceans 119 10 7007 7015 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Ikaite (CaCO3�6H2O) has recently been discovered in sea ice, providing first direct evidence of CaCO3 precipitation in sea ice. However, the impact of ikaite precipitation on phosphate (PO4) concentration has not been considered so far. Experiments were set up at pH from 8.5 to 10.0, salinities from 0 to 105, temperatures from 24°C to 0°C, and PO4 concentrations from 5 to 50 mmol kg-1 in artificial sea ice brine so as to understand how ikaite precipitation affects the PO4 concentration in sea ice under different conditions. Our results show that PO4 is coprecipitated with ikaite under all experimental conditions. The amount of PO4 removed by ikaite precipitation increases with increasing pH. Changes in salinity (S >=35) as well as temperature have little impact on PO4 removal by ikaite precipitation. The initial PO4 concentration affects the PO4 coprecipitation. These findings may shed some light on the observed variability of PO4 concentration in sea ice. |
format |
Article in Journal/Newspaper |
author |
Hu, Yu-Bin Dieckmann, Gerhard S. Wolf-Gladrow, Dieter A. Nehrke, Gernot |
spellingShingle |
Hu, Yu-Bin Dieckmann, Gerhard S. Wolf-Gladrow, Dieter A. Nehrke, Gernot Laboratory study on coprecipitation of phosphate with ikaite in sea ice |
author_facet |
Hu, Yu-Bin Dieckmann, Gerhard S. Wolf-Gladrow, Dieter A. Nehrke, Gernot |
author_sort |
Hu, Yu-Bin |
title |
Laboratory study on coprecipitation of phosphate with ikaite in sea ice |
title_short |
Laboratory study on coprecipitation of phosphate with ikaite in sea ice |
title_full |
Laboratory study on coprecipitation of phosphate with ikaite in sea ice |
title_fullStr |
Laboratory study on coprecipitation of phosphate with ikaite in sea ice |
title_full_unstemmed |
Laboratory study on coprecipitation of phosphate with ikaite in sea ice |
title_sort |
laboratory study on coprecipitation of phosphate with ikaite in sea ice |
publishDate |
2014 |
url |
https://epic.awi.de/id/eprint/44835/ https://epic.awi.de/id/eprint/44835/1/Hu14GD_DWG_GN.pdf https://hdl.handle.net/10013/epic.51083 https://hdl.handle.net/10013/epic.51083.d001 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
EPIC3Geophys. Res. Oceans, 119, pp. 7007-7015 |
op_relation |
https://epic.awi.de/id/eprint/44835/1/Hu14GD_DWG_GN.pdf https://hdl.handle.net/10013/epic.51083.d001 Hu, Y. B. , Dieckmann, G. S. , Wolf-Gladrow, D. A. orcid:0000-0001-9531-8668 and Nehrke, G. orcid:0000-0002-2851-3049 (2014) Laboratory study on coprecipitation of phosphate with ikaite in sea ice , Geophys. Res. Oceans, 119 , pp. 7007-7015 . doi:10.1002/2014JC010079 <https://doi.org/10.1002/2014JC010079> , hdl:10013/epic.51083 |
op_doi |
https://doi.org/10.1002/2014JC010079 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
119 |
container_issue |
10 |
container_start_page |
7007 |
op_container_end_page |
7015 |
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1810475976326381568 |