The analysis of 226Ra in 1-liter seawater by isotope dilution via single-collector sector-field ICP-MS
The precise determination of radium-226 (226Ra) in environmental samples is challenging due to its low con- centration. Seawater typically contains between 0.03 and 0.1 fg g−1 226Ra. Thus, this work addresses the need for an easy and precise methodology for 226Ra determination in seawater that may b...
Published in: | Limnology and Oceanography: Methods |
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AMER SOC LIMNOLOGY OCEANOGRAPHY
2021
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Online Access: | https://epic.awi.de/id/eprint/57049/ https://epic.awi.de/id/eprint/57049/1/Limnology_Ocean_Methods_Vieira-The_analysis_of_226Ra_in_1_liter_seawater_by_isotope_dilution_via_single-collector_sector-field_ICP-MS.pdf https://aslopubs.onlinelibrary.wiley.com/doi/10.1002/lom3.10428 https://hdl.handle.net/10013/epic.df0e8f1f-30d9-4a03-bcce-ac7027990baa |
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ftawi:oai:epic.awi.de:57049 2024-09-09T19:27:02+00:00 The analysis of 226Ra in 1-liter seawater by isotope dilution via single-collector sector-field ICP-MS Vieira, Lúcia H. Geibert, Walter Stimac, Ingrid Koehler, Dennis Rutgers v. d. Loeff, Michiel 2021 application/pdf https://epic.awi.de/id/eprint/57049/ https://epic.awi.de/id/eprint/57049/1/Limnology_Ocean_Methods_Vieira-The_analysis_of_226Ra_in_1_liter_seawater_by_isotope_dilution_via_single-collector_sector-field_ICP-MS.pdf https://aslopubs.onlinelibrary.wiley.com/doi/10.1002/lom3.10428 https://hdl.handle.net/10013/epic.df0e8f1f-30d9-4a03-bcce-ac7027990baa unknown AMER SOC LIMNOLOGY OCEANOGRAPHY https://epic.awi.de/id/eprint/57049/1/Limnology_Ocean_Methods_Vieira-The_analysis_of_226Ra_in_1_liter_seawater_by_isotope_dilution_via_single-collector_sector-field_ICP-MS.pdf Vieira, L. H. orcid:0000-0001-9382-062X , Geibert, W. orcid:0000-0001-8646-2334 , Stimac, I. orcid:0000-0001-6053-2330 , Koehler, D. orcid:0000-0003-3058-4337 and Rutgers v. d. Loeff, M. orcid:0000-0003-1393-3742 (2021) The analysis of 226Ra in 1-liter seawater by isotope dilution via single-collector sector-field ICP-MS , Limnology and Oceanography-Methods, 19 , pp. 356-367 . doi:10.1002/lom3.10428 <https://doi.org/10.1002/lom3.10428> , hdl:10013/epic.df0e8f1f-30d9-4a03-bcce-ac7027990baa EPIC3Limnology and Oceanography-Methods, AMER SOC LIMNOLOGY OCEANOGRAPHY, 19, pp. 356-367, ISSN: 1541-5856 Article isiRev 2021 ftawi https://doi.org/10.1002/lom3.10428 2024-06-24T04:30:12Z The precise determination of radium-226 (226Ra) in environmental samples is challenging due to its low con- centration. Seawater typically contains between 0.03 and 0.1 fg g−1 226Ra. Thus, this work addresses the need for an easy and precise methodology for 226Ra determination in seawater that may be applied routinely to a large number of samples. For this reason, a new analytical approach has been developed for the quantification of 226Ra in seawater via inductively coupled plasma mass spectrometry (ICP-MS). Analysis by single collector sector-field ICP-MS was shown to be convenient and reliable for this purpose once potential molecular interfer- ences were excluded by a combination of chemical separation and intermediate mass resolution analysis. The proposed method allows purification of Ra from the sample matrix based on preconcentration by MnO2 precipi- tation, followed by two-column separation using a cation exchange resin and an extraction chromatographic resin. The method can be applied to acidified and unacidified seawater samples. The recovery efficiency for Ra ranged between 90% and 99.8%, with precision of 5%, accuracy of 95.7% to 99.9%, and a detection limit of 0.033 fg g−1 (referring to the original concentration of seawater). The method has been applied to measure 226Ra concentrations from the North Sea and validated by analyzing samples from the central Arctic (GEOTRACES GN04). Samples from a crossover station (from GEOTRACES GN04 and GEOTRACES GN01 research cruises) were analyzed using alternative methods, and our results are in good agreement with published values. Article in Journal/Newspaper Arctic Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Limnology and Oceanography: Methods 19 5 356 367 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The precise determination of radium-226 (226Ra) in environmental samples is challenging due to its low con- centration. Seawater typically contains between 0.03 and 0.1 fg g−1 226Ra. Thus, this work addresses the need for an easy and precise methodology for 226Ra determination in seawater that may be applied routinely to a large number of samples. For this reason, a new analytical approach has been developed for the quantification of 226Ra in seawater via inductively coupled plasma mass spectrometry (ICP-MS). Analysis by single collector sector-field ICP-MS was shown to be convenient and reliable for this purpose once potential molecular interfer- ences were excluded by a combination of chemical separation and intermediate mass resolution analysis. The proposed method allows purification of Ra from the sample matrix based on preconcentration by MnO2 precipi- tation, followed by two-column separation using a cation exchange resin and an extraction chromatographic resin. The method can be applied to acidified and unacidified seawater samples. The recovery efficiency for Ra ranged between 90% and 99.8%, with precision of 5%, accuracy of 95.7% to 99.9%, and a detection limit of 0.033 fg g−1 (referring to the original concentration of seawater). The method has been applied to measure 226Ra concentrations from the North Sea and validated by analyzing samples from the central Arctic (GEOTRACES GN04). Samples from a crossover station (from GEOTRACES GN04 and GEOTRACES GN01 research cruises) were analyzed using alternative methods, and our results are in good agreement with published values. |
format |
Article in Journal/Newspaper |
author |
Vieira, Lúcia H. Geibert, Walter Stimac, Ingrid Koehler, Dennis Rutgers v. d. Loeff, Michiel |
spellingShingle |
Vieira, Lúcia H. Geibert, Walter Stimac, Ingrid Koehler, Dennis Rutgers v. d. Loeff, Michiel The analysis of 226Ra in 1-liter seawater by isotope dilution via single-collector sector-field ICP-MS |
author_facet |
Vieira, Lúcia H. Geibert, Walter Stimac, Ingrid Koehler, Dennis Rutgers v. d. Loeff, Michiel |
author_sort |
Vieira, Lúcia H. |
title |
The analysis of 226Ra in 1-liter seawater by isotope dilution via single-collector sector-field ICP-MS |
title_short |
The analysis of 226Ra in 1-liter seawater by isotope dilution via single-collector sector-field ICP-MS |
title_full |
The analysis of 226Ra in 1-liter seawater by isotope dilution via single-collector sector-field ICP-MS |
title_fullStr |
The analysis of 226Ra in 1-liter seawater by isotope dilution via single-collector sector-field ICP-MS |
title_full_unstemmed |
The analysis of 226Ra in 1-liter seawater by isotope dilution via single-collector sector-field ICP-MS |
title_sort |
analysis of 226ra in 1-liter seawater by isotope dilution via single-collector sector-field icp-ms |
publisher |
AMER SOC LIMNOLOGY OCEANOGRAPHY |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/57049/ https://epic.awi.de/id/eprint/57049/1/Limnology_Ocean_Methods_Vieira-The_analysis_of_226Ra_in_1_liter_seawater_by_isotope_dilution_via_single-collector_sector-field_ICP-MS.pdf https://aslopubs.onlinelibrary.wiley.com/doi/10.1002/lom3.10428 https://hdl.handle.net/10013/epic.df0e8f1f-30d9-4a03-bcce-ac7027990baa |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
EPIC3Limnology and Oceanography-Methods, AMER SOC LIMNOLOGY OCEANOGRAPHY, 19, pp. 356-367, ISSN: 1541-5856 |
op_relation |
https://epic.awi.de/id/eprint/57049/1/Limnology_Ocean_Methods_Vieira-The_analysis_of_226Ra_in_1_liter_seawater_by_isotope_dilution_via_single-collector_sector-field_ICP-MS.pdf Vieira, L. H. orcid:0000-0001-9382-062X , Geibert, W. orcid:0000-0001-8646-2334 , Stimac, I. orcid:0000-0001-6053-2330 , Koehler, D. orcid:0000-0003-3058-4337 and Rutgers v. d. Loeff, M. orcid:0000-0003-1393-3742 (2021) The analysis of 226Ra in 1-liter seawater by isotope dilution via single-collector sector-field ICP-MS , Limnology and Oceanography-Methods, 19 , pp. 356-367 . doi:10.1002/lom3.10428 <https://doi.org/10.1002/lom3.10428> , hdl:10013/epic.df0e8f1f-30d9-4a03-bcce-ac7027990baa |
op_doi |
https://doi.org/10.1002/lom3.10428 |
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Limnology and Oceanography: Methods |
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19 |
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5 |
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