Interlaboratory comparison study of calibration standards for foraminiferal Mg/Ca thermometry
Identifieur interne : 008795 ( Main/Exploration ); précédent : 008794; suivant : 008796Interlaboratory comparison study of calibration standards for foraminiferal Mg/Ca thermometry
Auteurs : M. Greaves [Royaume-Uni] ; N. Caillon [France] ; H. Rebaubier [France] ; G. Bartoli [Allemagne, Suisse] ; S. Bohaty [États-Unis, Royaume-Uni] ; I. Cacho [Espagne] ; L. Clarke [Royaume-Uni] ; M. Cooper [Royaume-Uni] ; C. Daunt [Royaume-Uni] ; M. Delaney [États-Unis] ; P. Demenocal [États-Unis] ; A. Dutton [Australie] ; S. Eggins [Australie] ; H. Elderfield [Royaume-Uni] ; D. Garbe-Schoenberg [Allemagne] ; E. Goddard [États-Unis] ; D. Green [Royaume-Uni] ; J. Groeneveld [Allemagne] ; D. Hastings [États-Unis] ; E. Hathorne [Royaume-Uni, Allemagne] ; K. Kimoto [Japon] ; G. Klinkhammer [États-Unis] ; L. Labeyrie [France] ; D. W. Lea [États-Unis] ; T. Marchitto [États-Unis] ; M. A. Martínez-Botí [Espagne] ; P. G. Mortyn [Espagne] ; Y. Ni [Royaume-Uni] ; D. Nuernberg [Allemagne] ; G. Paradis [États-Unis] ; L. Pena [Espagne] ; T. Quinn [États-Unis] ; Y. Rosenthal [États-Unis] ; A. Russell [États-Unis] ; T. Sagawa [Japon] ; S. Sosdian [États-Unis] ; L. Stott [États-Unis] ; K. Tachikawa [France] ; E. Tappa [États-Unis] ; R. Thunell [États-Unis] ; P. A. Wilson [Royaume-Uni]Source :
- Geochemistry, Geophysics, Geosystems [ 1525-2027 ] ; 2008-08.
Descripteurs français
- Wicri :
- topic : Sciences de la terre, Géochimie, Géophysique.
English descriptors
- KwdEn :
- Analytical methods, Anand, Anova, Auxiliary material tables, Available carbonate reference materials, Benthic, Calcite, Calibration standards, Carbonate, Centrifugation, Cmsi, Cochran, Cochran test, Complete data, Different laboratories, Dissolution, Dissolution protocol, Earth planet, Earth sciences, Ecrm, Elderfield, Element concentrations, Error bars, Foraminifera, Foraminiferal, Foraminiferal calcite, Foraminiferal thermometry, Foraminiferal thermometry figure, Foraminiferal thermometry table, Geochem, Geochemistry, Geochemistry geophysics geosystems, Geological sciences, Geophys, Geophysics, Geosyst, Geosystems, Greaves, Grubbs, Grubbs test, Horwitz, Individual measurements, Instrument calibrations, Interlaboratory, Interlaboratory comparison study, Interlaboratory study, Interlaboratory variability, International standardization organization, Intralaboratory, Laboratory precisions, Laboratory variance, Little effect, Noncarbonate, Noncentrifuged, Noncentrifuged determinations, Normal distribution, Ocean sciences, Oceanography centre, Open symbols, Other laboratories, Outlier, Paleoceanography, Planktonic, Planktonic foraminifera, Possible contamination, Preliminary homogeneity study, Preliminary studies, Reference materials, Repeatability, Reproducibility, Rosenthal, Rsdr, Sample sizes, Sample weights, Santa barbara, Santa cruz, Silicate, Silicate contamination, Silicate mineral phases, Solid standards, Solid symbols, Solid volume, Standard deviation, Standard solutions, Statistical analysis, Statistical data rejection, Statistical rejection, Thermometry, Trace elements, Variance, Wide range.
- Teeft :
- Analytical methods, Anand, Anova, Auxiliary material tables, Available carbonate reference materials, Benthic, Calcite, Calibration standards, Carbonate, Centrifugation, Cmsi, Cochran, Cochran test, Complete data, Different laboratories, Dissolution, Dissolution protocol, Earth planet, Earth sciences, Ecrm, Elderfield, Element concentrations, Error bars, Foraminifera, Foraminiferal, Foraminiferal calcite, Foraminiferal thermometry, Foraminiferal thermometry figure, Foraminiferal thermometry table, Geochem, Geochemistry, Geochemistry geophysics geosystems, Geological sciences, Geophys, Geophysics, Geosyst, Geosystems, Greaves, Grubbs, Grubbs test, Horwitz, Individual measurements, Instrument calibrations, Interlaboratory, Interlaboratory comparison study, Interlaboratory study, Interlaboratory variability, International standardization organization, Intralaboratory, Laboratory precisions, Laboratory variance, Little effect, Noncarbonate, Noncentrifuged, Noncentrifuged determinations, Normal distribution, Ocean sciences, Oceanography centre, Open symbols, Other laboratories, Outlier, Paleoceanography, Planktonic, Planktonic foraminifera, Possible contamination, Preliminary homogeneity study, Preliminary studies, Reference materials, Repeatability, Reproducibility, Rosenthal, Rsdr, Sample sizes, Sample weights, Santa barbara, Santa cruz, Silicate, Silicate contamination, Silicate mineral phases, Solid standards, Solid symbols, Solid volume, Standard deviation, Standard solutions, Statistical analysis, Statistical data rejection, Statistical rejection, Thermometry, Trace elements, Variance, Wide range.
Abstract
An interlaboratory study of Mg/Ca and Sr/Ca ratios in three commercially available carbonate reference materials (BAM RS3, CMSI 1767, and ECRM 752‐1) was performed with the participation of 25 laboratories that determine foraminiferal Mg/Ca ratios worldwide. These reference materials containing Mg/Ca in the range of foraminiferal calcite (0.8 mmol/mol to 6 mmol/mol) were circulated with a dissolution protocol for analysis. Participants were asked to make replicate dissolutions of the powdered samples and to analyze them using the instruments and calibration standards routinely used in their laboratories. Statistical analysis was performed in accordance with the International Standardization Organization standard 5725, which is based on the analysis of variance (ANOVA) technique. Repeatability (RSDr%), an indicator of intralaboratory precision, for Mg/Ca determinations in solutions after centrifuging increased with decreasing Mg/Ca, ranging from 0.78% at Mg/Ca = 5.56 mmol/mol to 1.15% at Mg/Ca = 0.79 mmol/mol. Reproducibility (RSDR%), an indicator of the interlaboratory method precision, for Mg/Ca determinations in centrifuged solutions was noticeably worse than repeatability, ranging from 4.5% at Mg/Ca = 5.56 mmol/mol to 8.7% at Mg/Ca = 0.79 mmol/mol. Results of this study show that interlaboratory variability is dominated by inconsistencies among instrument calibrations and highlight the need to improve interlaboratory compatibility. Additionally, the study confirmed the suitability of these solid standards as reference materials for foraminiferal Mg/Ca (and Sr/Ca) determinations, provided that appropriate procedures are adopted to minimize and to monitor possible contamination from silicate mineral phases.
Url:
DOI: 10.1029/2008GC001974
Affiliations:
- Allemagne, Australie, Espagne, France, Japon, Royaume-Uni, Suisse, États-Unis
- Angleterre, Angleterre de l'Est, Brême (Land), Californie, Catalogne, Floride, Schleswig-Holstein, État de New York, Île-de-France
- Barcelone, Brême, Cambridge, Gif sur Yvette, Kiel, Los Angeles, New York, Tampa
- Université Columbia, Université autonome de Barcelone, Université de Cambridge, Université de Floride du Sud
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Caillon</name><affiliation wicri:level="1"><country xml:lang="fr">France</country><wicri:regionArea>LSCE/IPSL, UMR CNRS, CEA, UVSQ, Bâtiment 12, avenue de la Terrasse,, F‐91198, Gif sur Yvette</wicri:regionArea><wicri:noRegion>91198, Gif sur Yvette</wicri:noRegion><wicri:noRegion>Gif sur Yvette</wicri:noRegion></affiliation></author><author><name sortKey="Rebaubier, H" sort="Rebaubier, H" uniqKey="Rebaubier H" first="H." last="Rebaubier">H. Rebaubier</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>LSCE/IPSL, UMR CNRS, CEA, UVSQ, Bâtiment 12, avenue de la Terrasse,, F‐91198, Gif sur Yvette</wicri:regionArea><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif sur Yvette</settlement></placeName></affiliation></author><author><name sortKey="Bartoli, G" sort="Bartoli, G" uniqKey="Bartoli G" first="G." last="Bartoli">G. Bartoli</name><affiliation wicri:level="3"><country xml:lang="fr">Allemagne</country><wicri:regionArea>Institute für Geowissenschaften, Kiel University, Olshausenstrasse 40,, D‐24118, Kiel</wicri:regionArea><placeName><region type="land" nuts="2">Schleswig-Holstein</region><settlement type="city">Kiel</settlement></placeName></affiliation><affiliation wicri:level="1"><country xml:lang="fr">Suisse</country><wicri:regionArea>Now at ETH Zentrum, Chemie Altbau, CAB E64, Universitätstrasse 6, CH‐8092 Zurich</wicri:regionArea><wicri:noRegion>CH‐8092 Zurich</wicri:noRegion></affiliation></author><author><name sortKey="Bohaty, S" sort="Bohaty, S" uniqKey="Bohaty S" first="S." last="Bohaty">S. Bohaty</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Ocean Sciences, University of California, Santa Cruz, 95060, Santa Cruz, California</wicri:regionArea><placeName><region type="state">Californie</region></placeName></affiliation><affiliation wicri:level="1"><country xml:lang="fr" wicri:curation="lc">Royaume-Uni</country><wicri:regionArea>Now at School of Ocean and Earth Science, University of Southampton, National Oceanography Centre, European Way, Southampton SO14 3ZH</wicri:regionArea><wicri:noRegion>Southampton SO14 3ZH</wicri:noRegion></affiliation></author><author><name sortKey="Cacho, I" sort="Cacho, I" uniqKey="Cacho I" first="I." last="Cacho">I. Cacho</name><affiliation wicri:level="3"><country xml:lang="fr">Espagne</country><wicri:regionArea>GRC Geociències Marines, Department of Stratigraphy, Paleontology and Marine Geosciences, University of Barcelona, C/Martí i Franquès, s/n,, E‐08028, Barcelona</wicri:regionArea><placeName><settlement type="city">Barcelone</settlement><region nuts="2" type="region">Catalogne</region></placeName></affiliation></author><author><name sortKey="Clarke, L" sort="Clarke, L" uniqKey="Clarke L" first="L." last="Clarke">L. Clarke</name><affiliation wicri:level="1"><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>School of Ocean Sciences, College of Natural Sciences, Bangor University, Askew Street, Menai Bridge, Isle of Anglesey,, LL59 5EY, Wales</wicri:regionArea><wicri:noRegion>Wales</wicri:noRegion></affiliation></author><author><name sortKey="Cooper, M" sort="Cooper, M" uniqKey="Cooper M" first="M." last="Cooper">M. Cooper</name><affiliation wicri:level="1"><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>National Oceanography Centre, European Way, SO14 3ZH, Southampton</wicri:regionArea><wicri:noRegion>Southampton</wicri:noRegion></affiliation></author><author><name sortKey="Daunt, C" sort="Daunt, C" uniqKey="Daunt C" first="C." last="Daunt">C. Daunt</name><affiliation wicri:level="4"><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Department of Earth Sciences, University of Cambridge, Downing Street,, CB2 3EQ, Cambridge</wicri:regionArea><orgName type="university">Université de Cambridge</orgName><placeName><settlement type="city">Cambridge</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Angleterre de l'Est</region></placeName></affiliation></author><author><name sortKey="Delaney, M" sort="Delaney, M" uniqKey="Delaney M" first="M." last="Delaney">M. Delaney</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Ocean Sciences, University of California, Santa Cruz, California, 95060, Santa Cruz</wicri:regionArea><wicri:noRegion>Santa Cruz</wicri:noRegion></affiliation></author><author><name sortKey="Demenocal, P" sort="Demenocal, P" uniqKey="Demenocal P" first="P." last="Demenocal">P. Demenocal</name><affiliation wicri:level="4"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Lamont‐Doherty Earth Observatory, Columbia University, Geoscience 211, Route 9W,, New York, 10964, Palisades</wicri:regionArea><orgName type="university">Université Columbia</orgName><placeName><settlement type="city">New York</settlement><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="Dutton, A" sort="Dutton, A" uniqKey="Dutton A" first="A." last="Dutton">A. Dutton</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>Research School of Earth Sciences, Australian National University, 1 Mills Road,, ACT 0200, Canberra</wicri:regionArea><wicri:noRegion>Canberra</wicri:noRegion></affiliation></author><author><name sortKey="Eggins, S" sort="Eggins, S" uniqKey="Eggins S" first="S." last="Eggins">S. Eggins</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>Research School of Earth Sciences, Australian National University, 1 Mills Road,, ACT 0200, Canberra</wicri:regionArea><wicri:noRegion>Canberra</wicri:noRegion></affiliation></author><author><name sortKey="Elderfield, H" sort="Elderfield, H" uniqKey="Elderfield H" first="H." last="Elderfield">H. Elderfield</name><affiliation wicri:level="4"><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Department of Earth Sciences, University of Cambridge, Downing Street,, CB2 3EQ, Cambridge</wicri:regionArea><orgName type="university">Université de Cambridge</orgName><placeName><settlement type="city">Cambridge</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Angleterre de l'Est</region></placeName></affiliation></author><author><name sortKey="Garbe Choenberg, D" sort="Garbe Choenberg, D" uniqKey="Garbe Choenberg D" first="D." last="Garbe-Schoenberg">D. Garbe-Schoenberg</name><affiliation wicri:level="3"><country xml:lang="fr">Allemagne</country><wicri:regionArea>Institute für Geowissenschaften, Kiel University, Olshausenstrasse 40,, D‐24118, Kiel</wicri:regionArea><placeName><region type="land" nuts="2">Schleswig-Holstein</region><settlement type="city">Kiel</settlement></placeName></affiliation></author><author><name sortKey="Goddard, E" sort="Goddard, E" uniqKey="Goddard E" first="E." last="Goddard">E. Goddard</name><affiliation wicri:level="4"><country xml:lang="fr">États-Unis</country><wicri:regionArea>College of Marine Science, University of South Florida, Florida, 33701, St. Petersburg</wicri:regionArea><orgName type="university">Université de Floride du Sud</orgName><placeName><settlement type="city">Tampa</settlement><region type="state">Floride</region></placeName></affiliation></author><author><name sortKey="Green, D" sort="Green, D" uniqKey="Green D" first="D." last="Green">D. Green</name><affiliation wicri:level="1"><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>National Oceanography Centre, European Way, SO14 3ZH, Southampton</wicri:regionArea><wicri:noRegion>Southampton</wicri:noRegion></affiliation></author><author><name sortKey="Groeneveld, J" sort="Groeneveld, J" uniqKey="Groeneveld J" first="J." last="Groeneveld">J. Groeneveld</name><affiliation wicri:level="3"><country xml:lang="fr">Allemagne</country><wicri:regionArea>IFM‐GEOMAR, Wischhofstrasse 1‐3,, D‐24148, Kiel</wicri:regionArea><placeName><region type="land" nuts="2">Schleswig-Holstein</region><settlement type="city">Kiel</settlement></placeName></affiliation><affiliation wicri:level="3"><country xml:lang="fr">Allemagne</country><wicri:regionArea>Now at Research Center Ocean Margins, University of Bremen, D‐28359 Bremen</wicri:regionArea><placeName><region type="land" nuts="3">Brême (Land)</region><settlement type="city">Brême</settlement></placeName></affiliation></author><author><name sortKey="Hastings, D" sort="Hastings, D" uniqKey="Hastings D" first="D." last="Hastings">D. Hastings</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Collegium of Natural Sciences, Eckerd College, 4200 54th Avenue South,, Florida, 33713, St. Petersburg</wicri:regionArea><wicri:noRegion>St. Petersburg</wicri:noRegion></affiliation></author><author><name sortKey="Hathorne, E" sort="Hathorne, E" uniqKey="Hathorne E" first="E." last="Hathorne">E. Hathorne</name><affiliation wicri:level="1"><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Department of Earth Sciences, Open University, Milton Keynes</wicri:regionArea><wicri:noRegion>Milton Keynes</wicri:noRegion></affiliation><affiliation wicri:level="3"><country xml:lang="fr">Allemagne</country><wicri:regionArea>Now at Research Center Ocean Margins, University of Bremen, D‐28359 Bremen</wicri:regionArea><placeName><region type="land" nuts="3">Brême (Land)</region><settlement type="city">Brême</settlement></placeName></affiliation></author><author><name sortKey="Kimoto, K" sort="Kimoto, K" uniqKey="Kimoto K" first="K." last="Kimoto">K. Kimoto</name><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Institute of Observational Research for Global Change, JAMSTEC, 2–15, Natsushima‐cho,, 247‐0061, Yokosuka</wicri:regionArea><wicri:noRegion>Yokosuka</wicri:noRegion></affiliation></author><author><name sortKey="Klinkhammer, G" sort="Klinkhammer, G" uniqKey="Klinkhammer G" first="G." last="Klinkhammer">G. Klinkhammer</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>College of Oceanography, Oregon State University, Oceanography Administration Building 104,, Oregon, 97331, Corvallis</wicri:regionArea><wicri:noRegion>Corvallis</wicri:noRegion></affiliation></author><author><name sortKey="Labeyrie, L" sort="Labeyrie, L" uniqKey="Labeyrie L" first="L." last="Labeyrie">L. Labeyrie</name><affiliation wicri:level="1"><country xml:lang="fr">France</country><wicri:regionArea>LSCE/IPSL, UMR CNRS, CEA, UVSQ, Bâtiment 12, avenue de la Terrasse,, F‐91198, Gif sur Yvette</wicri:regionArea><wicri:noRegion>91198, Gif sur Yvette</wicri:noRegion><wicri:noRegion>Gif sur Yvette</wicri:noRegion></affiliation></author><author><name sortKey="Lea, D W" sort="Lea, D W" uniqKey="Lea D" first="D. W." last="Lea">D. W. Lea</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Geological Sciences, University of California, Santa Barbara, Mail Stop 9630,, California, 93106, Santa Barbara</wicri:regionArea><wicri:noRegion>Santa Barbara</wicri:noRegion></affiliation></author><author><name sortKey="Marchitto, T" sort="Marchitto, T" uniqKey="Marchitto T" first="T." last="Marchitto">T. Marchitto</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>INSTAAR, University of Colorado, Colorado, 80309, Boulder</wicri:regionArea><wicri:noRegion>Boulder</wicri:noRegion></affiliation></author><author><name sortKey="Martinez Oti, M A" sort="Martinez Oti, M A" uniqKey="Martinez Oti M" first="M. A." last="Martínez-Botí">M. A. Martínez-Botí</name><affiliation wicri:level="4"><country xml:lang="fr">Espagne</country><wicri:regionArea>ICTA, Universitat Autònoma de Barcelona, Edifici Cn ‐ Campus UAB,, E‐08193, Bellaterra</wicri:regionArea><orgName type="university">Université autonome de Barcelone</orgName><placeName><settlement type="city">Barcelone</settlement><region nuts="2" type="region">Catalogne</region></placeName></affiliation></author><author><name sortKey="Mortyn, P G" sort="Mortyn, P G" uniqKey="Mortyn P" first="P. G." last="Mortyn">P. G. Mortyn</name><affiliation wicri:level="4"><country xml:lang="fr">Espagne</country><wicri:regionArea>ICTA, Universitat Autònoma de Barcelona, Edifici Cn ‐ Campus UAB,, E‐08193, Bellaterra</wicri:regionArea><orgName type="university">Université autonome de Barcelone</orgName><placeName><settlement type="city">Barcelone</settlement><region nuts="2" type="region">Catalogne</region></placeName></affiliation></author><author><name sortKey="Ni, Y" sort="Ni, Y" uniqKey="Ni Y" first="Y." last="Ni">Y. Ni</name><affiliation wicri:level="1"><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Department of Earth Sciences, University of Bristol, Bristol</wicri:regionArea><wicri:noRegion>Bristol</wicri:noRegion></affiliation><affiliation></affiliation></author><author><name sortKey="Nuernberg, D" sort="Nuernberg, D" uniqKey="Nuernberg D" first="D." last="Nuernberg">D. Nuernberg</name><affiliation wicri:level="3"><country xml:lang="fr">Allemagne</country><wicri:regionArea>IFM‐GEOMAR, Wischhofstrasse 1‐3,, D‐24148, Kiel</wicri:regionArea><placeName><region type="land" nuts="2">Schleswig-Holstein</region><settlement type="city">Kiel</settlement></placeName></affiliation></author><author><name sortKey="Paradis, G" sort="Paradis, G" uniqKey="Paradis G" first="G." last="Paradis">G. Paradis</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Geological Sciences, University of California, Santa Barbara, Mail Stop 9630,, California, 93106, Santa Barbara</wicri:regionArea><wicri:noRegion>Santa Barbara</wicri:noRegion></affiliation></author><author><name sortKey="Pena, L" sort="Pena, L" uniqKey="Pena L" first="L." last="Pena">L. Pena</name><affiliation wicri:level="3"><country xml:lang="fr">Espagne</country><wicri:regionArea>GRC Geociències Marines, Department of Stratigraphy, Paleontology and Marine Geosciences, University of Barcelona, C/Martí i Franquès, s/n,, E‐08028, Barcelona</wicri:regionArea><placeName><settlement type="city">Barcelone</settlement><region nuts="2" type="region">Catalogne</region></placeName></affiliation></author><author><name sortKey="Quinn, T" sort="Quinn, T" uniqKey="Quinn T" first="T." last="Quinn">T. Quinn</name><affiliation wicri:level="4"><country xml:lang="fr">États-Unis</country><wicri:regionArea>College of Marine Science, University of South Florida, Florida, 33701, St. Petersburg</wicri:regionArea><orgName type="university">Université de Floride du Sud</orgName><placeName><settlement type="city">Tampa</settlement><region type="state">Floride</region></placeName></affiliation></author><author><name sortKey="Rosenthal, Y" sort="Rosenthal, Y" uniqKey="Rosenthal Y" first="Y." last="Rosenthal">Y. Rosenthal</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute of Marine and Coastal Sciences, Department of Geology, Rutgers, State University of New Jersey, 71 Dudley Road,, New Jersey, 08901, New Brunswick</wicri:regionArea><wicri:noRegion>New Brunswick</wicri:noRegion></affiliation></author><author><name sortKey="Russell, A" sort="Russell, A" uniqKey="Russell A" first="A." last="Russell">A. Russell</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Geology, University of California, Davis, One Shields Avenue,, California, 95616, Davis</wicri:regionArea><wicri:noRegion>Davis</wicri:noRegion></affiliation></author><author><name sortKey="Sagawa, T" sort="Sagawa, T" uniqKey="Sagawa T" first="T." last="Sagawa">T. Sagawa</name><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Center for Advanced Marine Core Research, Kochi University, B200 Monobe, Nankoku,, 783–8502, Kochi</wicri:regionArea><wicri:noRegion>Kochi</wicri:noRegion></affiliation></author><author><name sortKey="Sosdian, S" sort="Sosdian, S" uniqKey="Sosdian S" first="S." last="Sosdian">S. Sosdian</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute of Marine and Coastal Sciences, Department of Geology, Rutgers, State University of New Jersey, 71 Dudley Road,, New Jersey, 08901, New Brunswick</wicri:regionArea><wicri:noRegion>New Brunswick</wicri:noRegion></affiliation></author><author><name sortKey="Stott, L" sort="Stott, L" uniqKey="Stott L" first="L." last="Stott">L. Stott</name><affiliation wicri:level="3"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Earth Sciences, University of South California, California, 90089, Los Angeles</wicri:regionArea><placeName><settlement type="city">Los Angeles</settlement><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Tachikawa, K" sort="Tachikawa, K" uniqKey="Tachikawa K" first="K." last="Tachikawa">K. Tachikawa</name><affiliation wicri:level="1"><country xml:lang="fr">France</country><wicri:regionArea>CEREGE, UMR UAMIII, CNRS, CDF, IRD, Europôle Méditerranéen de l'Arbois,, BP 80, F‐13545, Aix‐en‐Provence</wicri:regionArea><wicri:noRegion>13545, Aix‐en‐Provence</wicri:noRegion><wicri:noRegion>Aix‐en‐Provence</wicri:noRegion></affiliation></author><author><name sortKey="Tappa, E" sort="Tappa, E" uniqKey="Tappa E" first="E." last="Tappa">E. Tappa</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Geological Sciences, University of South Carolina, 701 Sumter Street, EWSC Room 617,, South Carolina, 29208, Columbia</wicri:regionArea><wicri:noRegion>Columbia</wicri:noRegion></affiliation></author><author><name sortKey="Thunell, R" sort="Thunell, R" uniqKey="Thunell R" first="R." last="Thunell">R. Thunell</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Geological Sciences, University of South Carolina, 701 Sumter Street, EWSC Room 617,, South Carolina, 29208, Columbia</wicri:regionArea><wicri:noRegion>Columbia</wicri:noRegion></affiliation></author><author><name sortKey="Wilson, P A" sort="Wilson, P A" uniqKey="Wilson P" first="P. A." last="Wilson">P. A. Wilson</name><affiliation wicri:level="1"><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>National Oceanography Centre, European Way, SO14 3ZH, Southampton</wicri:regionArea><wicri:noRegion>Southampton</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Geochemistry, Geophysics, Geosystems</title><title level="j" type="alt">GEOCHEMISTRY, GEOPHYSICS, GEOSYSTEMS</title><idno type="ISSN">1525-2027</idno><idno type="eISSN">1525-2027</idno><imprint><biblScope unit="vol">9</biblScope><biblScope unit="issue">8</biblScope><biblScope unit="page-count">27</biblScope><date type="published" when="2008-08">2008-08</date></imprint><idno type="ISSN">1525-2027</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1525-2027</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Analytical methods</term><term>Anand</term><term>Anova</term><term>Auxiliary material tables</term><term>Available carbonate reference materials</term><term>Benthic</term><term>Calcite</term><term>Calibration standards</term><term>Carbonate</term><term>Centrifugation</term><term>Cmsi</term><term>Cochran</term><term>Cochran test</term><term>Complete data</term><term>Different laboratories</term><term>Dissolution</term><term>Dissolution protocol</term><term>Earth planet</term><term>Earth sciences</term><term>Ecrm</term><term>Elderfield</term><term>Element concentrations</term><term>Error bars</term><term>Foraminifera</term><term>Foraminiferal</term><term>Foraminiferal calcite</term><term>Foraminiferal thermometry</term><term>Foraminiferal thermometry figure</term><term>Foraminiferal thermometry table</term><term>Geochem</term><term>Geochemistry</term><term>Geochemistry geophysics geosystems</term><term>Geological sciences</term><term>Geophys</term><term>Geophysics</term><term>Geosyst</term><term>Geosystems</term><term>Greaves</term><term>Grubbs</term><term>Grubbs test</term><term>Horwitz</term><term>Individual measurements</term><term>Instrument calibrations</term><term>Interlaboratory</term><term>Interlaboratory comparison study</term><term>Interlaboratory study</term><term>Interlaboratory variability</term><term>International standardization organization</term><term>Intralaboratory</term><term>Laboratory precisions</term><term>Laboratory variance</term><term>Little effect</term><term>Noncarbonate</term><term>Noncentrifuged</term><term>Noncentrifuged determinations</term><term>Normal distribution</term><term>Ocean sciences</term><term>Oceanography centre</term><term>Open symbols</term><term>Other laboratories</term><term>Outlier</term><term>Paleoceanography</term><term>Planktonic</term><term>Planktonic foraminifera</term><term>Possible contamination</term><term>Preliminary homogeneity study</term><term>Preliminary studies</term><term>Reference materials</term><term>Repeatability</term><term>Reproducibility</term><term>Rosenthal</term><term>Rsdr</term><term>Sample sizes</term><term>Sample weights</term><term>Santa barbara</term><term>Santa cruz</term><term>Silicate</term><term>Silicate contamination</term><term>Silicate mineral phases</term><term>Solid standards</term><term>Solid symbols</term><term>Solid volume</term><term>Standard deviation</term><term>Standard solutions</term><term>Statistical analysis</term><term>Statistical data rejection</term><term>Statistical rejection</term><term>Thermometry</term><term>Trace elements</term><term>Variance</term><term>Wide range</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Analytical methods</term><term>Anand</term><term>Anova</term><term>Auxiliary material tables</term><term>Available carbonate reference materials</term><term>Benthic</term><term>Calcite</term><term>Calibration standards</term><term>Carbonate</term><term>Centrifugation</term><term>Cmsi</term><term>Cochran</term><term>Cochran test</term><term>Complete data</term><term>Different laboratories</term><term>Dissolution</term><term>Dissolution protocol</term><term>Earth planet</term><term>Earth sciences</term><term>Ecrm</term><term>Elderfield</term><term>Element concentrations</term><term>Error bars</term><term>Foraminifera</term><term>Foraminiferal</term><term>Foraminiferal calcite</term><term>Foraminiferal thermometry</term><term>Foraminiferal thermometry figure</term><term>Foraminiferal thermometry table</term><term>Geochem</term><term>Geochemistry</term><term>Geochemistry geophysics geosystems</term><term>Geological sciences</term><term>Geophys</term><term>Geophysics</term><term>Geosyst</term><term>Geosystems</term><term>Greaves</term><term>Grubbs</term><term>Grubbs test</term><term>Horwitz</term><term>Individual measurements</term><term>Instrument calibrations</term><term>Interlaboratory</term><term>Interlaboratory comparison study</term><term>Interlaboratory study</term><term>Interlaboratory variability</term><term>International standardization organization</term><term>Intralaboratory</term><term>Laboratory precisions</term><term>Laboratory variance</term><term>Little effect</term><term>Noncarbonate</term><term>Noncentrifuged</term><term>Noncentrifuged determinations</term><term>Normal distribution</term><term>Ocean sciences</term><term>Oceanography centre</term><term>Open symbols</term><term>Other laboratories</term><term>Outlier</term><term>Paleoceanography</term><term>Planktonic</term><term>Planktonic foraminifera</term><term>Possible contamination</term><term>Preliminary homogeneity study</term><term>Preliminary studies</term><term>Reference materials</term><term>Repeatability</term><term>Reproducibility</term><term>Rosenthal</term><term>Rsdr</term><term>Sample sizes</term><term>Sample weights</term><term>Santa barbara</term><term>Santa cruz</term><term>Silicate</term><term>Silicate contamination</term><term>Silicate mineral phases</term><term>Solid standards</term><term>Solid symbols</term><term>Solid volume</term><term>Standard deviation</term><term>Standard solutions</term><term>Statistical analysis</term><term>Statistical data rejection</term><term>Statistical rejection</term><term>Thermometry</term><term>Trace elements</term><term>Variance</term><term>Wide range</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Sciences de la terre</term><term>Géochimie</term><term>Géophysique</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract">An interlaboratory study of Mg/Ca and Sr/Ca ratios in three commercially available carbonate reference materials (BAM RS3, CMSI 1767, and ECRM 752‐1) was performed with the participation of 25 laboratories that determine foraminiferal Mg/Ca ratios worldwide. These reference materials containing Mg/Ca in the range of foraminiferal calcite (0.8 mmol/mol to 6 mmol/mol) were circulated with a dissolution protocol for analysis. Participants were asked to make replicate dissolutions of the powdered samples and to analyze them using the instruments and calibration standards routinely used in their laboratories. Statistical analysis was performed in accordance with the International Standardization Organization standard 5725, which is based on the analysis of variance (ANOVA) technique. Repeatability (RSDr%), an indicator of intralaboratory precision, for Mg/Ca determinations in solutions after centrifuging increased with decreasing Mg/Ca, ranging from 0.78% at Mg/Ca = 5.56 mmol/mol to 1.15% at Mg/Ca = 0.79 mmol/mol. Reproducibility (RSDR%), an indicator of the interlaboratory method precision, for Mg/Ca determinations in centrifuged solutions was noticeably worse than repeatability, ranging from 4.5% at Mg/Ca = 5.56 mmol/mol to 8.7% at Mg/Ca = 0.79 mmol/mol. Results of this study show that interlaboratory variability is dominated by inconsistencies among instrument calibrations and highlight the need to improve interlaboratory compatibility. Additionally, the study confirmed the suitability of these solid standards as reference materials for foraminiferal Mg/Ca (and Sr/Ca) determinations, provided that appropriate procedures are adopted to minimize and to monitor possible contamination from silicate mineral phases.</div></front></TEI><affiliations><list><country><li>Allemagne</li><li>Australie</li><li>Espagne</li><li>France</li><li>Japon</li><li>Royaume-Uni</li><li>Suisse</li><li>États-Unis</li></country><region><li>Angleterre</li><li>Angleterre de l'Est</li><li>Brême (Land)</li><li>Californie</li><li>Catalogne</li><li>Floride</li><li>Schleswig-Holstein</li><li>État de New York</li><li>Île-de-France</li></region><settlement><li>Barcelone</li><li>Brême</li><li>Cambridge</li><li>Gif sur Yvette</li><li>Kiel</li><li>Los Angeles</li><li>New York</li><li>Tampa</li></settlement><orgName><li>Université Columbia</li><li>Université autonome de Barcelone</li><li>Université de Cambridge</li><li>Université de Floride du Sud</li></orgName></list><tree><country name="Royaume-Uni"><noRegion><name sortKey="Greaves, M" sort="Greaves, M" uniqKey="Greaves M" first="M." last="Greaves">M. Greaves</name></noRegion><name sortKey="Bohaty, S" sort="Bohaty, S" uniqKey="Bohaty S" first="S." last="Bohaty">S. Bohaty</name><name sortKey="Clarke, L" sort="Clarke, L" uniqKey="Clarke L" first="L." last="Clarke">L. Clarke</name><name sortKey="Cooper, M" sort="Cooper, M" uniqKey="Cooper M" first="M." last="Cooper">M. Cooper</name><name sortKey="Daunt, C" sort="Daunt, C" uniqKey="Daunt C" first="C." last="Daunt">C. Daunt</name><name sortKey="Elderfield, H" sort="Elderfield, H" uniqKey="Elderfield H" first="H." last="Elderfield">H. Elderfield</name><name sortKey="Greaves, M" sort="Greaves, M" uniqKey="Greaves M" first="M." last="Greaves">M. Greaves</name><name sortKey="Greaves, M" sort="Greaves, M" uniqKey="Greaves M" first="M." last="Greaves">M. Greaves</name><name sortKey="Green, D" sort="Green, D" uniqKey="Green D" first="D." last="Green">D. Green</name><name sortKey="Hathorne, E" sort="Hathorne, E" uniqKey="Hathorne E" first="E." last="Hathorne">E. Hathorne</name><name sortKey="Ni, Y" sort="Ni, Y" uniqKey="Ni Y" first="Y." last="Ni">Y. Ni</name><name sortKey="Wilson, P A" sort="Wilson, P A" uniqKey="Wilson P" first="P. A." last="Wilson">P. A. Wilson</name></country><country name="France"><noRegion><name sortKey="Caillon, N" sort="Caillon, N" uniqKey="Caillon N" first="N." last="Caillon">N. Caillon</name></noRegion><name sortKey="Labeyrie, L" sort="Labeyrie, L" uniqKey="Labeyrie L" first="L." last="Labeyrie">L. Labeyrie</name><name sortKey="Rebaubier, H" sort="Rebaubier, H" uniqKey="Rebaubier H" first="H." last="Rebaubier">H. Rebaubier</name><name sortKey="Tachikawa, K" sort="Tachikawa, K" uniqKey="Tachikawa K" first="K." last="Tachikawa">K. Tachikawa</name></country><country name="Allemagne"><region name="Schleswig-Holstein"><name sortKey="Bartoli, G" sort="Bartoli, G" uniqKey="Bartoli G" first="G." last="Bartoli">G. Bartoli</name></region><name sortKey="Garbe Choenberg, D" sort="Garbe Choenberg, D" uniqKey="Garbe Choenberg D" first="D." last="Garbe-Schoenberg">D. Garbe-Schoenberg</name><name sortKey="Groeneveld, J" sort="Groeneveld, J" uniqKey="Groeneveld J" first="J." last="Groeneveld">J. Groeneveld</name><name sortKey="Groeneveld, J" sort="Groeneveld, J" uniqKey="Groeneveld J" first="J." last="Groeneveld">J. Groeneveld</name><name sortKey="Hathorne, E" sort="Hathorne, E" uniqKey="Hathorne E" first="E." last="Hathorne">E. Hathorne</name><name sortKey="Nuernberg, D" sort="Nuernberg, D" uniqKey="Nuernberg D" first="D." last="Nuernberg">D. Nuernberg</name></country><country name="Suisse"><noRegion><name sortKey="Bartoli, G" sort="Bartoli, G" uniqKey="Bartoli G" first="G." last="Bartoli">G. Bartoli</name></noRegion></country><country name="États-Unis"><region name="Californie"><name sortKey="Bohaty, S" sort="Bohaty, S" uniqKey="Bohaty S" first="S." last="Bohaty">S. Bohaty</name></region><name sortKey="Delaney, M" sort="Delaney, M" uniqKey="Delaney M" first="M." last="Delaney">M. Delaney</name><name sortKey="Demenocal, P" sort="Demenocal, P" uniqKey="Demenocal P" first="P." last="Demenocal">P. Demenocal</name><name sortKey="Goddard, E" sort="Goddard, E" uniqKey="Goddard E" first="E." last="Goddard">E. Goddard</name><name sortKey="Hastings, D" sort="Hastings, D" uniqKey="Hastings D" first="D." last="Hastings">D. Hastings</name><name sortKey="Klinkhammer, G" sort="Klinkhammer, G" uniqKey="Klinkhammer G" first="G." last="Klinkhammer">G. Klinkhammer</name><name sortKey="Lea, D W" sort="Lea, D W" uniqKey="Lea D" first="D. W." last="Lea">D. W. Lea</name><name sortKey="Marchitto, T" sort="Marchitto, T" uniqKey="Marchitto T" first="T." last="Marchitto">T. Marchitto</name><name sortKey="Paradis, G" sort="Paradis, G" uniqKey="Paradis G" first="G." last="Paradis">G. Paradis</name><name sortKey="Quinn, T" sort="Quinn, T" uniqKey="Quinn T" first="T." last="Quinn">T. Quinn</name><name sortKey="Rosenthal, Y" sort="Rosenthal, Y" uniqKey="Rosenthal Y" first="Y." last="Rosenthal">Y. Rosenthal</name><name sortKey="Russell, A" sort="Russell, A" uniqKey="Russell A" first="A." last="Russell">A. Russell</name><name sortKey="Sosdian, S" sort="Sosdian, S" uniqKey="Sosdian S" first="S." last="Sosdian">S. Sosdian</name><name sortKey="Stott, L" sort="Stott, L" uniqKey="Stott L" first="L." last="Stott">L. Stott</name><name sortKey="Tappa, E" sort="Tappa, E" uniqKey="Tappa E" first="E." last="Tappa">E. Tappa</name><name sortKey="Thunell, R" sort="Thunell, R" uniqKey="Thunell R" first="R." last="Thunell">R. Thunell</name></country><country name="Espagne"><region name="Catalogne"><name sortKey="Cacho, I" sort="Cacho, I" uniqKey="Cacho I" first="I." last="Cacho">I. Cacho</name></region><name sortKey="Martinez Oti, M A" sort="Martinez Oti, M A" uniqKey="Martinez Oti M" first="M. A." last="Martínez-Botí">M. A. Martínez-Botí</name><name sortKey="Mortyn, P G" sort="Mortyn, P G" uniqKey="Mortyn P" first="P. G." last="Mortyn">P. G. Mortyn</name><name sortKey="Pena, L" sort="Pena, L" uniqKey="Pena L" first="L." last="Pena">L. Pena</name></country><country name="Australie"><noRegion><name sortKey="Dutton, A" sort="Dutton, A" uniqKey="Dutton A" first="A." last="Dutton">A. Dutton</name></noRegion><name sortKey="Eggins, S" sort="Eggins, S" uniqKey="Eggins S" first="S." last="Eggins">S. Eggins</name></country><country name="Japon"><noRegion><name sortKey="Kimoto, K" sort="Kimoto, K" uniqKey="Kimoto K" first="K." last="Kimoto">K. Kimoto</name></noRegion><name sortKey="Sagawa, T" sort="Sagawa, T" uniqKey="Sagawa T" first="T." last="Sagawa">T. Sagawa</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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