Determination of low B/Ca ratios in carbonates using ICP-QQQ
The very low B/Ca ratios characteristic of some natural biogenic carbonates, are of interest for research in ocean acidification but represent an analytical challenge. We describe a method using a novel instrument configuration (ICP-QQQ), for which we are not aware of any previously published geolog...
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ftriaasturias:oai:ria.asturias.es:123456789/6345 2023-05-15T17:51:50+02:00 Determination of low B/Ca ratios in carbonates using ICP-QQQ Diez, Silvia Ruiz, Jorge Sanz-Medel, Alfredo Isensee, Kristen Stoll, H.M. (Heather) 2016-05-31 application/pdf https://ria.asturias.es/RIA/bitstream/123456789/6345/1/Archivo_I.pdf https://ria.asturias.es/RIA/bitstream/123456789/6345/2/Archivo_II.pdf eng eng Wiley Geochemistry, Geophysics, Geosystems 16 6 Sí, esta versión ha sido citada http://creativecommons.org/licenses/by-nc-sa/3.0/deed.es CC-BY-NC-SA Diez Fernández, Silvia; Ruiz Encinar, Jorge; Sanz-Medel, Alfredo; Isensee, Kristen; Stoll, Heather M. Determination of low B/Ca ratios in carbonates using ICP-QQQ. Geochemistry, Geophysics, Geosystems. 2015; 16 (6): 2005-2014. ISSN: 1525-2027 OTHER: 10.1002/2015GC005817 2005;2014 B/Ca Phosphorus Sulfur ICP-QQQ Coccolithophorids Publicado other 2016 ftriaasturias 2019-07-05T12:21:34Z The very low B/Ca ratios characteristic of some natural biogenic carbonates, are of interest for research in ocean acidification but represent an analytical challenge. We describe a method using a novel instrument configuration (ICP-QQQ), for which we are not aware of any previously published geological applications, and for coccoliths, a sample type unique in its low B content and organic phases. Detection limits as low as 0.41 µmol/mol were achieved. Isobaric interferences, out of the reach even for SF-ICP-MS, can be solved using this instrument, which permits the safe measurement of the lowest abundance Ca isotope (46Ca). This allows maximizing the B concentration measured (matrix concentration up to 800 ppm Ca) while maintaining both B and Ca signals in counting mode. More significantly for low B samples, the ICP-QQQ is also able to overcome the interference of the ubiquitous 12C tail on the 11B mass, which otherwise leads to significant overestimates at very low B concentrations. This could be a reason for the significantly lower B/Ca ratios observed for the low B content interlaboratory calibration standards (Carrara and OKA), while matching for the high B content standards was good. Finally, results obtained in the analysis of coccoliths grown in laboratory culture seems to corroborate that SIMS analysis of the samples mounted in Indium leads also to B/Ca overestimates due to porosity effects, as previously observed using LA-ICP-MS. This approach also permits the interference-free measurement of P/Ca and S/Ca ratios, which could be used as indicators of the complete removal of the organic matter from the samples. Other/Unknown Material Ocean acidification Repositorio Institucional de Asturias (RIA - Universidad de Oviedo) Carrara ENVELOPE(-71.458,-71.458,-74.891,-74.891) |
institution |
Open Polar |
collection |
Repositorio Institucional de Asturias (RIA - Universidad de Oviedo) |
op_collection_id |
ftriaasturias |
language |
English |
topic |
B/Ca Phosphorus Sulfur ICP-QQQ Coccolithophorids Publicado |
spellingShingle |
B/Ca Phosphorus Sulfur ICP-QQQ Coccolithophorids Publicado Diez, Silvia Ruiz, Jorge Sanz-Medel, Alfredo Isensee, Kristen Stoll, H.M. (Heather) Determination of low B/Ca ratios in carbonates using ICP-QQQ |
topic_facet |
B/Ca Phosphorus Sulfur ICP-QQQ Coccolithophorids Publicado |
description |
The very low B/Ca ratios characteristic of some natural biogenic carbonates, are of interest for research in ocean acidification but represent an analytical challenge. We describe a method using a novel instrument configuration (ICP-QQQ), for which we are not aware of any previously published geological applications, and for coccoliths, a sample type unique in its low B content and organic phases. Detection limits as low as 0.41 µmol/mol were achieved. Isobaric interferences, out of the reach even for SF-ICP-MS, can be solved using this instrument, which permits the safe measurement of the lowest abundance Ca isotope (46Ca). This allows maximizing the B concentration measured (matrix concentration up to 800 ppm Ca) while maintaining both B and Ca signals in counting mode. More significantly for low B samples, the ICP-QQQ is also able to overcome the interference of the ubiquitous 12C tail on the 11B mass, which otherwise leads to significant overestimates at very low B concentrations. This could be a reason for the significantly lower B/Ca ratios observed for the low B content interlaboratory calibration standards (Carrara and OKA), while matching for the high B content standards was good. Finally, results obtained in the analysis of coccoliths grown in laboratory culture seems to corroborate that SIMS analysis of the samples mounted in Indium leads also to B/Ca overestimates due to porosity effects, as previously observed using LA-ICP-MS. This approach also permits the interference-free measurement of P/Ca and S/Ca ratios, which could be used as indicators of the complete removal of the organic matter from the samples. |
format |
Other/Unknown Material |
author |
Diez, Silvia Ruiz, Jorge Sanz-Medel, Alfredo Isensee, Kristen Stoll, H.M. (Heather) |
author_facet |
Diez, Silvia Ruiz, Jorge Sanz-Medel, Alfredo Isensee, Kristen Stoll, H.M. (Heather) |
author_sort |
Diez, Silvia |
title |
Determination of low B/Ca ratios in carbonates using ICP-QQQ |
title_short |
Determination of low B/Ca ratios in carbonates using ICP-QQQ |
title_full |
Determination of low B/Ca ratios in carbonates using ICP-QQQ |
title_fullStr |
Determination of low B/Ca ratios in carbonates using ICP-QQQ |
title_full_unstemmed |
Determination of low B/Ca ratios in carbonates using ICP-QQQ |
title_sort |
determination of low b/ca ratios in carbonates using icp-qqq |
publisher |
Wiley |
publishDate |
2016 |
url |
https://ria.asturias.es/RIA/bitstream/123456789/6345/1/Archivo_I.pdf https://ria.asturias.es/RIA/bitstream/123456789/6345/2/Archivo_II.pdf |
long_lat |
ENVELOPE(-71.458,-71.458,-74.891,-74.891) |
geographic |
Carrara |
geographic_facet |
Carrara |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Diez Fernández, Silvia; Ruiz Encinar, Jorge; Sanz-Medel, Alfredo; Isensee, Kristen; Stoll, Heather M. Determination of low B/Ca ratios in carbonates using ICP-QQQ. Geochemistry, Geophysics, Geosystems. 2015; 16 (6): 2005-2014. ISSN: 1525-2027 OTHER: 10.1002/2015GC005817 2005;2014 |
op_relation |
Geochemistry, Geophysics, Geosystems 16 6 Sí, esta versión ha sido citada |
op_rights |
http://creativecommons.org/licenses/by-nc-sa/3.0/deed.es |
op_rightsnorm |
CC-BY-NC-SA |
_version_ |
1766159107871473664 |