Interlaboratory comparison study of Mg/Ca and Sr/Ca measurements in planktonic foraminifera for paleoceanographic research
Thirteen laboratories from the USA and Europe participated in an intercomparison study of Mg/Ca and Sr/Ca measurements in foraminifera. The study included five planktonic species from surface sediments from different geographical regions and water depths. Each of the laboratories followed their own...
Published in: | Geochemistry, Geophysics, Geosystems |
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Format: | Article in Journal/Newspaper |
Language: | English |
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American Geophysical Union.
2004
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Online Access: | https://orca.cardiff.ac.uk/id/eprint/11087/ https://doi.org/10.1029/2003GC000650 https://orca.cardiff.ac.uk/id/eprint/11087/1/RosenthalY2004InterlabMgCaG3.pdf |
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:11087 2023-05-15T18:00:58+02:00 Interlaboratory comparison study of Mg/Ca and Sr/Ca measurements in planktonic foraminifera for paleoceanographic research Rosenthal, Yair Perron-Cashman, S. Lear, Caroline Helen Bard, E. Barker, Stephen Billups, K. Bryan, M. Delaney, M. L. deMenocal, P. B. Dwyer, G. S. Elderfield, H. German, C. R. Greaves, M. Lea, D. W. 2004 application/pdf https://orca.cardiff.ac.uk/id/eprint/11087/ https://doi.org/10.1029/2003GC000650 https://orca.cardiff.ac.uk/id/eprint/11087/1/RosenthalY2004InterlabMgCaG3.pdf en eng American Geophysical Union. https://orca.cardiff.ac.uk/id/eprint/11087/1/RosenthalY2004InterlabMgCaG3.pdf Rosenthal, Yair, Perron-Cashman, S., Lear, Caroline Helen https://orca.cardiff.ac.uk/view/cardiffauthors/A048848V.html orcid:0000-0002-7533-4430 orcid:0000-0002-7533-4430, Bard, E., Barker, Stephen https://orca.cardiff.ac.uk/view/cardiffauthors/A015364W.html orcid:0000-0001-7870-6431 orcid:0000-0001-7870-6431, Billups, K., Bryan, M., Delaney, M. L., deMenocal, P. B., Dwyer, G. S., Elderfield, H., German, C. R., Greaves, M. and Lea, D. W. 2004. Interlaboratory comparison study of Mg/Ca and Sr/Ca measurements in planktonic foraminifera for paleoceanographic research. Geochemistry Geophysics Geosystems 5 (4) , Q04D09. 10.1029/2003GC000650 https://doi.org/10.1029/2003GC000650 file https://orca.cardiff.ac.uk/11087/1/RosenthalY2004InterlabMgCaG3.pdf doi:10.1029/2003GC000650 GC Oceanography QE Geology Article PeerReviewed 2004 ftunivcardiff https://doi.org/10.1029/2003GC000650 2022-10-20T22:34:30Z Thirteen laboratories from the USA and Europe participated in an intercomparison study of Mg/Ca and Sr/Ca measurements in foraminifera. The study included five planktonic species from surface sediments from different geographical regions and water depths. Each of the laboratories followed their own cleaning and analytical procedures and had no specific information about the samples. Analysis of solutions of known Mg/Ca and Sr/Ca ratios showed that the intralaboratory instrumental precision is better than 0.5% for both Mg/Ca and Sr/Ca measurements, regardless whether ICP-OES or ICP-MS is used. The interlaboratory precision on the analysis of standard solutions was about 1.5% and 0.9% for Mg/Ca and Sr/Ca measurements, respectively. These are equivalent to Mg/Ca-based temperature repeatability and reproducibility on the analysis of solutions of ±0.2°C and ±0.5°C, respectively. The analysis of foraminifera suggests an interlaboratory variance of about ±8% (%RSD) for Mg/Ca measurements, which translates to reproducibility of about ±2–3°C. The relatively large range in the reproducibility of foraminiferal analysis is primarily due to relatively poor intralaboratory repeatability (about ±1–2°C) and a bias (about 1°C) due to the application of different cleaning methods by different laboratories. Improving the consistency of cleaning methods among laboratories will, therefore, likely lead to better reproducibility. Even more importantly, the results of this study highlight the need for standards calibration among laboratories as a first step toward improving interlaboratory compatibility. Article in Journal/Newspaper Planktonic foraminifera Cardiff University: ORCA (Online Research @ Cardiff) Geochemistry, Geophysics, Geosystems 5 4 n/a n/a |
institution |
Open Polar |
collection |
Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
English |
topic |
GC Oceanography QE Geology |
spellingShingle |
GC Oceanography QE Geology Rosenthal, Yair Perron-Cashman, S. Lear, Caroline Helen Bard, E. Barker, Stephen Billups, K. Bryan, M. Delaney, M. L. deMenocal, P. B. Dwyer, G. S. Elderfield, H. German, C. R. Greaves, M. Lea, D. W. Interlaboratory comparison study of Mg/Ca and Sr/Ca measurements in planktonic foraminifera for paleoceanographic research |
topic_facet |
GC Oceanography QE Geology |
description |
Thirteen laboratories from the USA and Europe participated in an intercomparison study of Mg/Ca and Sr/Ca measurements in foraminifera. The study included five planktonic species from surface sediments from different geographical regions and water depths. Each of the laboratories followed their own cleaning and analytical procedures and had no specific information about the samples. Analysis of solutions of known Mg/Ca and Sr/Ca ratios showed that the intralaboratory instrumental precision is better than 0.5% for both Mg/Ca and Sr/Ca measurements, regardless whether ICP-OES or ICP-MS is used. The interlaboratory precision on the analysis of standard solutions was about 1.5% and 0.9% for Mg/Ca and Sr/Ca measurements, respectively. These are equivalent to Mg/Ca-based temperature repeatability and reproducibility on the analysis of solutions of ±0.2°C and ±0.5°C, respectively. The analysis of foraminifera suggests an interlaboratory variance of about ±8% (%RSD) for Mg/Ca measurements, which translates to reproducibility of about ±2–3°C. The relatively large range in the reproducibility of foraminiferal analysis is primarily due to relatively poor intralaboratory repeatability (about ±1–2°C) and a bias (about 1°C) due to the application of different cleaning methods by different laboratories. Improving the consistency of cleaning methods among laboratories will, therefore, likely lead to better reproducibility. Even more importantly, the results of this study highlight the need for standards calibration among laboratories as a first step toward improving interlaboratory compatibility. |
format |
Article in Journal/Newspaper |
author |
Rosenthal, Yair Perron-Cashman, S. Lear, Caroline Helen Bard, E. Barker, Stephen Billups, K. Bryan, M. Delaney, M. L. deMenocal, P. B. Dwyer, G. S. Elderfield, H. German, C. R. Greaves, M. Lea, D. W. |
author_facet |
Rosenthal, Yair Perron-Cashman, S. Lear, Caroline Helen Bard, E. Barker, Stephen Billups, K. Bryan, M. Delaney, M. L. deMenocal, P. B. Dwyer, G. S. Elderfield, H. German, C. R. Greaves, M. Lea, D. W. |
author_sort |
Rosenthal, Yair |
title |
Interlaboratory comparison study of Mg/Ca and Sr/Ca measurements in planktonic foraminifera for paleoceanographic research |
title_short |
Interlaboratory comparison study of Mg/Ca and Sr/Ca measurements in planktonic foraminifera for paleoceanographic research |
title_full |
Interlaboratory comparison study of Mg/Ca and Sr/Ca measurements in planktonic foraminifera for paleoceanographic research |
title_fullStr |
Interlaboratory comparison study of Mg/Ca and Sr/Ca measurements in planktonic foraminifera for paleoceanographic research |
title_full_unstemmed |
Interlaboratory comparison study of Mg/Ca and Sr/Ca measurements in planktonic foraminifera for paleoceanographic research |
title_sort |
interlaboratory comparison study of mg/ca and sr/ca measurements in planktonic foraminifera for paleoceanographic research |
publisher |
American Geophysical Union. |
publishDate |
2004 |
url |
https://orca.cardiff.ac.uk/id/eprint/11087/ https://doi.org/10.1029/2003GC000650 https://orca.cardiff.ac.uk/id/eprint/11087/1/RosenthalY2004InterlabMgCaG3.pdf |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
https://orca.cardiff.ac.uk/id/eprint/11087/1/RosenthalY2004InterlabMgCaG3.pdf Rosenthal, Yair, Perron-Cashman, S., Lear, Caroline Helen https://orca.cardiff.ac.uk/view/cardiffauthors/A048848V.html orcid:0000-0002-7533-4430 orcid:0000-0002-7533-4430, Bard, E., Barker, Stephen https://orca.cardiff.ac.uk/view/cardiffauthors/A015364W.html orcid:0000-0001-7870-6431 orcid:0000-0001-7870-6431, Billups, K., Bryan, M., Delaney, M. L., deMenocal, P. B., Dwyer, G. S., Elderfield, H., German, C. R., Greaves, M. and Lea, D. W. 2004. Interlaboratory comparison study of Mg/Ca and Sr/Ca measurements in planktonic foraminifera for paleoceanographic research. Geochemistry Geophysics Geosystems 5 (4) , Q04D09. 10.1029/2003GC000650 https://doi.org/10.1029/2003GC000650 file https://orca.cardiff.ac.uk/11087/1/RosenthalY2004InterlabMgCaG3.pdf doi:10.1029/2003GC000650 |
op_doi |
https://doi.org/10.1029/2003GC000650 |
container_title |
Geochemistry, Geophysics, Geosystems |
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5 |
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4 |
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1766170268619767808 |