Determination of the isotopic composition of sub-ng amounts of Sr in Antarctic snow by multi-collector ICP-mass spectrometry
Determination of the Sr-87/Sr-86 isotope ratio in Antarctic snow can provide useful information on the sources of the atmospheric particulates in present and ancient times. However, precise and accurate determination of the Sr-87/Sr-86 ratio is challenging because of the low analyte concentration an...
Published in: | Journal of Analytical Atomic Spectrometry |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2017
|
Subjects: | |
Online Access: | https://biblio.ugent.be/publication/8528219 http://hdl.handle.net/1854/LU-8528219 https://doi.org/10.1039/c7ja00062f https://biblio.ugent.be/publication/8528219/file/8528220 |
id |
ftunivgent:oai:archive.ugent.be:8528219 |
---|---|
record_format |
openpolar |
spelling |
ftunivgent:oai:archive.ugent.be:8528219 2023-06-11T04:05:16+02:00 Determination of the isotopic composition of sub-ng amounts of Sr in Antarctic snow by multi-collector ICP-mass spectrometry Bazzano, Andrea Latruwe, Kris Grotti, Marco Vanhaecke, Frank 2017 application/pdf https://biblio.ugent.be/publication/8528219 http://hdl.handle.net/1854/LU-8528219 https://doi.org/10.1039/c7ja00062f https://biblio.ugent.be/publication/8528219/file/8528220 eng eng https://biblio.ugent.be/publication/8528219 http://hdl.handle.net/1854/LU-8528219 http://dx.doi.org/10.1039/c7ja00062f https://biblio.ugent.be/publication/8528219/file/8528220 No license (in copyright) info:eu-repo/semantics/restrictedAccess JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY ISSN: 0267-9477 ISSN: 1364-5544 Chemistry EAST ANTARCTICA SURFACE SNOW AEOLIAN DUST STRONTIUM SAMPLES PRECISION SINGLE DOME MS RATIO journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2017 ftunivgent https://doi.org/10.1039/c7ja00062f 2023-05-10T22:28:29Z Determination of the Sr-87/Sr-86 isotope ratio in Antarctic snow can provide useful information on the sources of the atmospheric particulates in present and ancient times. However, precise and accurate determination of the Sr-87/Sr-86 ratio is challenging because of the low analyte concentration and the limited amount of sample typically available. In this work, Sr was first pre-concentrated 30-fold via evaporation, after which Sr was chromatographically isolated from the matrix (and thus separated from Rb, avoiding isobaric overlap of Sr-87 and Rb-87). Subsequently, the sensitivity of the multi-collector ICP-mass spectrometer was maximized by using an Aridus II membrane desolvating system, a high-transmission interface and 10(12) Omega amplifiers instead of the standard 10(11) Omega ones. With this instrumental setup, the repeatability for Sr-87/Sr-86 ratio measurements was 0.3 and 0.5& RSD at 0.8 ng mL(-1) (or for 320 pg in the 0.4 mL of sample solution consumed) and at 0.4 ng mL(-1) (or for 160 pg) of Sr, respectively. The procedural blank was 2.5 +/- 0.5 pg and did not significantly affect the Sr-87/Sr-86 ratio measured using 160 pg of analyte (at 0.4 ng mL(-1)). The accuracy of the procedure was evaluated via replicate analysis of NIST SRM 987 SrCO3 isotopic reference material. The experimental data agreed with the accepted value within the experimental uncertainty both at 0.8 ng mL(-1) (for 320 pg) and at 0.4 ng mL(-1) (for 160 pg) of Sr. The method was applied to the analysis of Antarctic snow samples (30 g) containing 0.5-2.1 ng of Sr. The precision was fit for the purpose of discriminating between potential source areas (PSAs). The entire procedure required similar to 30 g of snow per sample, potentially enabling the contributions of PSAs to be unravelled with high temporal resolution. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ghent University Academic Bibliography Antarctic East Antarctica Journal of Analytical Atomic Spectrometry 32 5 1004 1008 |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Chemistry EAST ANTARCTICA SURFACE SNOW AEOLIAN DUST STRONTIUM SAMPLES PRECISION SINGLE DOME MS RATIO |
spellingShingle |
Chemistry EAST ANTARCTICA SURFACE SNOW AEOLIAN DUST STRONTIUM SAMPLES PRECISION SINGLE DOME MS RATIO Bazzano, Andrea Latruwe, Kris Grotti, Marco Vanhaecke, Frank Determination of the isotopic composition of sub-ng amounts of Sr in Antarctic snow by multi-collector ICP-mass spectrometry |
topic_facet |
Chemistry EAST ANTARCTICA SURFACE SNOW AEOLIAN DUST STRONTIUM SAMPLES PRECISION SINGLE DOME MS RATIO |
description |
Determination of the Sr-87/Sr-86 isotope ratio in Antarctic snow can provide useful information on the sources of the atmospheric particulates in present and ancient times. However, precise and accurate determination of the Sr-87/Sr-86 ratio is challenging because of the low analyte concentration and the limited amount of sample typically available. In this work, Sr was first pre-concentrated 30-fold via evaporation, after which Sr was chromatographically isolated from the matrix (and thus separated from Rb, avoiding isobaric overlap of Sr-87 and Rb-87). Subsequently, the sensitivity of the multi-collector ICP-mass spectrometer was maximized by using an Aridus II membrane desolvating system, a high-transmission interface and 10(12) Omega amplifiers instead of the standard 10(11) Omega ones. With this instrumental setup, the repeatability for Sr-87/Sr-86 ratio measurements was 0.3 and 0.5& RSD at 0.8 ng mL(-1) (or for 320 pg in the 0.4 mL of sample solution consumed) and at 0.4 ng mL(-1) (or for 160 pg) of Sr, respectively. The procedural blank was 2.5 +/- 0.5 pg and did not significantly affect the Sr-87/Sr-86 ratio measured using 160 pg of analyte (at 0.4 ng mL(-1)). The accuracy of the procedure was evaluated via replicate analysis of NIST SRM 987 SrCO3 isotopic reference material. The experimental data agreed with the accepted value within the experimental uncertainty both at 0.8 ng mL(-1) (for 320 pg) and at 0.4 ng mL(-1) (for 160 pg) of Sr. The method was applied to the analysis of Antarctic snow samples (30 g) containing 0.5-2.1 ng of Sr. The precision was fit for the purpose of discriminating between potential source areas (PSAs). The entire procedure required similar to 30 g of snow per sample, potentially enabling the contributions of PSAs to be unravelled with high temporal resolution. |
format |
Article in Journal/Newspaper |
author |
Bazzano, Andrea Latruwe, Kris Grotti, Marco Vanhaecke, Frank |
author_facet |
Bazzano, Andrea Latruwe, Kris Grotti, Marco Vanhaecke, Frank |
author_sort |
Bazzano, Andrea |
title |
Determination of the isotopic composition of sub-ng amounts of Sr in Antarctic snow by multi-collector ICP-mass spectrometry |
title_short |
Determination of the isotopic composition of sub-ng amounts of Sr in Antarctic snow by multi-collector ICP-mass spectrometry |
title_full |
Determination of the isotopic composition of sub-ng amounts of Sr in Antarctic snow by multi-collector ICP-mass spectrometry |
title_fullStr |
Determination of the isotopic composition of sub-ng amounts of Sr in Antarctic snow by multi-collector ICP-mass spectrometry |
title_full_unstemmed |
Determination of the isotopic composition of sub-ng amounts of Sr in Antarctic snow by multi-collector ICP-mass spectrometry |
title_sort |
determination of the isotopic composition of sub-ng amounts of sr in antarctic snow by multi-collector icp-mass spectrometry |
publishDate |
2017 |
url |
https://biblio.ugent.be/publication/8528219 http://hdl.handle.net/1854/LU-8528219 https://doi.org/10.1039/c7ja00062f https://biblio.ugent.be/publication/8528219/file/8528220 |
geographic |
Antarctic East Antarctica |
geographic_facet |
Antarctic East Antarctica |
genre |
Antarc* Antarctic Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica |
op_source |
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY ISSN: 0267-9477 ISSN: 1364-5544 |
op_relation |
https://biblio.ugent.be/publication/8528219 http://hdl.handle.net/1854/LU-8528219 http://dx.doi.org/10.1039/c7ja00062f https://biblio.ugent.be/publication/8528219/file/8528220 |
op_rights |
No license (in copyright) info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1039/c7ja00062f |
container_title |
Journal of Analytical Atomic Spectrometry |
container_volume |
32 |
container_issue |
5 |
container_start_page |
1004 |
op_container_end_page |
1008 |
_version_ |
1768373598861393920 |