Separation of Platinum from Palladium and Iridium in Iron Meteorites and Accurate High‐Precision Determination of Platinum Isotopes by Multi‐Collector ICP‐MS
This study presents a new measurement procedure for the isolation of Pt from iron meteorite samples. The method also allows for the separation of Pd from the same sample aliquot. The separation entails a two‐stage anion‐exchange procedure. In the first stage, Pt and Pd are separated from each other...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Hunt, Alison C [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2017 |
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| Rechteinformationen: |
Nutzungsrecht: © 2017 The Authors. published by John Wiley & Sons Ltd on behalf of the International Association of Geoanalysts. |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Geostandards and geoanalytical research - Vandoeuvre-lès-Nancy : Association Scientifique pour la Géologie et ses Applications, 2004, 41(2017), 4, Seite 633-647 |
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| Übergeordnetes Werk: |
volume:41 ; year:2017 ; number:4 ; pages:633-647 |
| Links: |
|---|
| DOI / URN: |
10.1111/ggr.12176 |
|---|
| Katalog-ID: |
OLC1998702561 |
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| 245 | 1 | 0 | |a Separation of Platinum from Palladium and Iridium in Iron Meteorites and Accurate High‐Precision Determination of Platinum Isotopes by Multi‐Collector ICP‐MS |
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| 520 | |a This study presents a new measurement procedure for the isolation of Pt from iron meteorite samples. The method also allows for the separation of Pd from the same sample aliquot. The separation entails a two‐stage anion‐exchange procedure. In the first stage, Pt and Pd are separated from each other and from major matrix constituents including Fe and Ni. In the second stage, Ir is reduced with ascorbic acid and eluted from the column before Pt collection. Platinum yields for the total procedure were typically 50–70%. After purification, high‐precision Pt isotope determinations were performed by multi‐collector ICP‐MS. The precision of the new method was assessed using the IIAB iron meteorite North Chile. Replicate analyses of multiple digestions of this material yielded an intermediate precision for the measurement results of 0.73 for ε 192 Pt, 0.15 for ε 194 Pt and 0.09 for ε 196 Pt (2 standard deviations). The NIST SRM 3140 Pt solution reference material was passed through the measurement procedure and yielded an isotopic composition that is identical to the unprocessed Pt reference material. This indicates that the new technique is unbiased within the limit of the estimated uncertainties. Data for three iron meteorites support that Pt isotope variations in these samples are due to exposure to galactic cosmic rays in space. Platinum was isolated from iron meteorites and determined by multi‐collector ICP‐MS. Platinum was separated from Pd, Ir, Os, and major matrix elements. Replicate analyses of the iron meteorite North Chile yielded a precision for the measurement results of 0.73 for ε 192 Pt and 0.09 for ε 196 Pt (2 standard deviations). | ||
| 540 | |a Nutzungsrecht: © 2017 The Authors. published by John Wiley & Sons Ltd on behalf of the International Association of Geoanalysts. | ||
| 650 | 4 | |a Pt isotopes | |
| 650 | 4 | |a multi‐collector ICP‐MS | |
| 650 | 4 | |a Pd isotopes | |
| 650 | 4 | |a iron meteorites | |
| 650 | 4 | |a ion‐exchange chemistry | |
| 650 | 4 | |a Measurement | |
| 650 | 4 | |a Separation | |
| 650 | 4 | |a Isotopes | |
| 650 | 4 | |a Anions | |
| 650 | 4 | |a Iridium | |
| 650 | 4 | |a Cosmic rays | |
| 650 | 4 | |a Isolation | |
| 650 | 4 | |a Water purification | |
| 650 | 4 | |a Methodology | |
| 650 | 4 | |a Vitamin C | |
| 650 | 4 | |a Cosmic radiation | |
| 650 | 4 | |a Platinum | |
| 650 | 4 | |a Reference materials | |
| 650 | 4 | |a Samples | |
| 650 | 4 | |a Iron | |
| 650 | 4 | |a Composition | |
| 650 | 4 | |a Palladium | |
| 650 | 4 | |a Meteors & meteorites | |
| 700 | 1 | |a Ek, Mattias |4 oth | |
| 700 | 1 | |a Schönbächler, Maria |4 oth | |
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| 856 | 4 | 1 | |u http://dx.doi.org/10.1111/ggr.12176 |3 Volltext |
| 856 | 4 | 2 | |u http://onlinelibrary.wiley.com/doi/10.1111/ggr.12176/abstract |
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10.1111/ggr.12176 doi PQ20171228 (DE-627)OLC1998702561 (DE-599)GBVOLC1998702561 (PRQ)p686-da6468132bcdafea55b389980a1030e2ccde88f33ded85498cbb31437e1869d30 (KEY)0012146020170000041000400633separationofplatinumfrompalladiumandiridiuminironm DE-627 ger DE-627 rakwb eng 550 DNB 38.59 bkl 38.32 bkl Hunt, Alison C verfasserin aut Separation of Platinum from Palladium and Iridium in Iron Meteorites and Accurate High‐Precision Determination of Platinum Isotopes by Multi‐Collector ICP‐MS 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier This study presents a new measurement procedure for the isolation of Pt from iron meteorite samples. The method also allows for the separation of Pd from the same sample aliquot. The separation entails a two‐stage anion‐exchange procedure. In the first stage, Pt and Pd are separated from each other and from major matrix constituents including Fe and Ni. In the second stage, Ir is reduced with ascorbic acid and eluted from the column before Pt collection. Platinum yields for the total procedure were typically 50–70%. After purification, high‐precision Pt isotope determinations were performed by multi‐collector ICP‐MS. The precision of the new method was assessed using the IIAB iron meteorite North Chile. Replicate analyses of multiple digestions of this material yielded an intermediate precision for the measurement results of 0.73 for ε 192 Pt, 0.15 for ε 194 Pt and 0.09 for ε 196 Pt (2 standard deviations). The NIST SRM 3140 Pt solution reference material was passed through the measurement procedure and yielded an isotopic composition that is identical to the unprocessed Pt reference material. This indicates that the new technique is unbiased within the limit of the estimated uncertainties. Data for three iron meteorites support that Pt isotope variations in these samples are due to exposure to galactic cosmic rays in space. Platinum was isolated from iron meteorites and determined by multi‐collector ICP‐MS. Platinum was separated from Pd, Ir, Os, and major matrix elements. Replicate analyses of the iron meteorite North Chile yielded a precision for the measurement results of 0.73 for ε 192 Pt and 0.09 for ε 196 Pt (2 standard deviations). Nutzungsrecht: © 2017 The Authors. published by John Wiley & Sons Ltd on behalf of the International Association of Geoanalysts. Pt isotopes multi‐collector ICP‐MS Pd isotopes iron meteorites ion‐exchange chemistry Measurement Separation Isotopes Anions Iridium Cosmic rays Isolation Water purification Methodology Vitamin C Cosmic radiation Platinum Reference materials Samples Iron Composition Palladium Meteors & meteorites Ek, Mattias oth Schönbächler, Maria oth Enthalten in Geostandards and geoanalytical research Vandoeuvre-lès-Nancy : Association Scientifique pour la Géologie et ses Applications, 2004 41(2017), 4, Seite 633-647 (DE-627)378573098 (DE-600)2134777-3 (DE-576)110514106 1639-4488 nnns volume:41 year:2017 number:4 pages:633-647 http://dx.doi.org/10.1111/ggr.12176 Volltext http://onlinelibrary.wiley.com/doi/10.1111/ggr.12176/abstract https://search.proquest.com/docview/1979267275 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_22 GBV_ILN_40 38.59 AVZ 38.32 AVZ AR 41 2017 4 633-647 |
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10.1111/ggr.12176 doi PQ20171228 (DE-627)OLC1998702561 (DE-599)GBVOLC1998702561 (PRQ)p686-da6468132bcdafea55b389980a1030e2ccde88f33ded85498cbb31437e1869d30 (KEY)0012146020170000041000400633separationofplatinumfrompalladiumandiridiuminironm DE-627 ger DE-627 rakwb eng 550 DNB 38.59 bkl 38.32 bkl Hunt, Alison C verfasserin aut Separation of Platinum from Palladium and Iridium in Iron Meteorites and Accurate High‐Precision Determination of Platinum Isotopes by Multi‐Collector ICP‐MS 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier This study presents a new measurement procedure for the isolation of Pt from iron meteorite samples. The method also allows for the separation of Pd from the same sample aliquot. The separation entails a two‐stage anion‐exchange procedure. In the first stage, Pt and Pd are separated from each other and from major matrix constituents including Fe and Ni. In the second stage, Ir is reduced with ascorbic acid and eluted from the column before Pt collection. Platinum yields for the total procedure were typically 50–70%. After purification, high‐precision Pt isotope determinations were performed by multi‐collector ICP‐MS. The precision of the new method was assessed using the IIAB iron meteorite North Chile. Replicate analyses of multiple digestions of this material yielded an intermediate precision for the measurement results of 0.73 for ε 192 Pt, 0.15 for ε 194 Pt and 0.09 for ε 196 Pt (2 standard deviations). The NIST SRM 3140 Pt solution reference material was passed through the measurement procedure and yielded an isotopic composition that is identical to the unprocessed Pt reference material. This indicates that the new technique is unbiased within the limit of the estimated uncertainties. Data for three iron meteorites support that Pt isotope variations in these samples are due to exposure to galactic cosmic rays in space. Platinum was isolated from iron meteorites and determined by multi‐collector ICP‐MS. Platinum was separated from Pd, Ir, Os, and major matrix elements. Replicate analyses of the iron meteorite North Chile yielded a precision for the measurement results of 0.73 for ε 192 Pt and 0.09 for ε 196 Pt (2 standard deviations). Nutzungsrecht: © 2017 The Authors. published by John Wiley & Sons Ltd on behalf of the International Association of Geoanalysts. Pt isotopes multi‐collector ICP‐MS Pd isotopes iron meteorites ion‐exchange chemistry Measurement Separation Isotopes Anions Iridium Cosmic rays Isolation Water purification Methodology Vitamin C Cosmic radiation Platinum Reference materials Samples Iron Composition Palladium Meteors & meteorites Ek, Mattias oth Schönbächler, Maria oth Enthalten in Geostandards and geoanalytical research Vandoeuvre-lès-Nancy : Association Scientifique pour la Géologie et ses Applications, 2004 41(2017), 4, Seite 633-647 (DE-627)378573098 (DE-600)2134777-3 (DE-576)110514106 1639-4488 nnns volume:41 year:2017 number:4 pages:633-647 http://dx.doi.org/10.1111/ggr.12176 Volltext http://onlinelibrary.wiley.com/doi/10.1111/ggr.12176/abstract https://search.proquest.com/docview/1979267275 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_22 GBV_ILN_40 38.59 AVZ 38.32 AVZ AR 41 2017 4 633-647 |
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10.1111/ggr.12176 doi PQ20171228 (DE-627)OLC1998702561 (DE-599)GBVOLC1998702561 (PRQ)p686-da6468132bcdafea55b389980a1030e2ccde88f33ded85498cbb31437e1869d30 (KEY)0012146020170000041000400633separationofplatinumfrompalladiumandiridiuminironm DE-627 ger DE-627 rakwb eng 550 DNB 38.59 bkl 38.32 bkl Hunt, Alison C verfasserin aut Separation of Platinum from Palladium and Iridium in Iron Meteorites and Accurate High‐Precision Determination of Platinum Isotopes by Multi‐Collector ICP‐MS 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier This study presents a new measurement procedure for the isolation of Pt from iron meteorite samples. The method also allows for the separation of Pd from the same sample aliquot. The separation entails a two‐stage anion‐exchange procedure. In the first stage, Pt and Pd are separated from each other and from major matrix constituents including Fe and Ni. In the second stage, Ir is reduced with ascorbic acid and eluted from the column before Pt collection. Platinum yields for the total procedure were typically 50–70%. After purification, high‐precision Pt isotope determinations were performed by multi‐collector ICP‐MS. The precision of the new method was assessed using the IIAB iron meteorite North Chile. Replicate analyses of multiple digestions of this material yielded an intermediate precision for the measurement results of 0.73 for ε 192 Pt, 0.15 for ε 194 Pt and 0.09 for ε 196 Pt (2 standard deviations). The NIST SRM 3140 Pt solution reference material was passed through the measurement procedure and yielded an isotopic composition that is identical to the unprocessed Pt reference material. This indicates that the new technique is unbiased within the limit of the estimated uncertainties. Data for three iron meteorites support that Pt isotope variations in these samples are due to exposure to galactic cosmic rays in space. Platinum was isolated from iron meteorites and determined by multi‐collector ICP‐MS. Platinum was separated from Pd, Ir, Os, and major matrix elements. Replicate analyses of the iron meteorite North Chile yielded a precision for the measurement results of 0.73 for ε 192 Pt and 0.09 for ε 196 Pt (2 standard deviations). Nutzungsrecht: © 2017 The Authors. published by John Wiley & Sons Ltd on behalf of the International Association of Geoanalysts. Pt isotopes multi‐collector ICP‐MS Pd isotopes iron meteorites ion‐exchange chemistry Measurement Separation Isotopes Anions Iridium Cosmic rays Isolation Water purification Methodology Vitamin C Cosmic radiation Platinum Reference materials Samples Iron Composition Palladium Meteors & meteorites Ek, Mattias oth Schönbächler, Maria oth Enthalten in Geostandards and geoanalytical research Vandoeuvre-lès-Nancy : Association Scientifique pour la Géologie et ses Applications, 2004 41(2017), 4, Seite 633-647 (DE-627)378573098 (DE-600)2134777-3 (DE-576)110514106 1639-4488 nnns volume:41 year:2017 number:4 pages:633-647 http://dx.doi.org/10.1111/ggr.12176 Volltext http://onlinelibrary.wiley.com/doi/10.1111/ggr.12176/abstract https://search.proquest.com/docview/1979267275 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_22 GBV_ILN_40 38.59 AVZ 38.32 AVZ AR 41 2017 4 633-647 |
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10.1111/ggr.12176 doi PQ20171228 (DE-627)OLC1998702561 (DE-599)GBVOLC1998702561 (PRQ)p686-da6468132bcdafea55b389980a1030e2ccde88f33ded85498cbb31437e1869d30 (KEY)0012146020170000041000400633separationofplatinumfrompalladiumandiridiuminironm DE-627 ger DE-627 rakwb eng 550 DNB 38.59 bkl 38.32 bkl Hunt, Alison C verfasserin aut Separation of Platinum from Palladium and Iridium in Iron Meteorites and Accurate High‐Precision Determination of Platinum Isotopes by Multi‐Collector ICP‐MS 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier This study presents a new measurement procedure for the isolation of Pt from iron meteorite samples. The method also allows for the separation of Pd from the same sample aliquot. The separation entails a two‐stage anion‐exchange procedure. In the first stage, Pt and Pd are separated from each other and from major matrix constituents including Fe and Ni. In the second stage, Ir is reduced with ascorbic acid and eluted from the column before Pt collection. Platinum yields for the total procedure were typically 50–70%. After purification, high‐precision Pt isotope determinations were performed by multi‐collector ICP‐MS. The precision of the new method was assessed using the IIAB iron meteorite North Chile. Replicate analyses of multiple digestions of this material yielded an intermediate precision for the measurement results of 0.73 for ε 192 Pt, 0.15 for ε 194 Pt and 0.09 for ε 196 Pt (2 standard deviations). The NIST SRM 3140 Pt solution reference material was passed through the measurement procedure and yielded an isotopic composition that is identical to the unprocessed Pt reference material. This indicates that the new technique is unbiased within the limit of the estimated uncertainties. Data for three iron meteorites support that Pt isotope variations in these samples are due to exposure to galactic cosmic rays in space. Platinum was isolated from iron meteorites and determined by multi‐collector ICP‐MS. Platinum was separated from Pd, Ir, Os, and major matrix elements. Replicate analyses of the iron meteorite North Chile yielded a precision for the measurement results of 0.73 for ε 192 Pt and 0.09 for ε 196 Pt (2 standard deviations). Nutzungsrecht: © 2017 The Authors. published by John Wiley & Sons Ltd on behalf of the International Association of Geoanalysts. Pt isotopes multi‐collector ICP‐MS Pd isotopes iron meteorites ion‐exchange chemistry Measurement Separation Isotopes Anions Iridium Cosmic rays Isolation Water purification Methodology Vitamin C Cosmic radiation Platinum Reference materials Samples Iron Composition Palladium Meteors & meteorites Ek, Mattias oth Schönbächler, Maria oth Enthalten in Geostandards and geoanalytical research Vandoeuvre-lès-Nancy : Association Scientifique pour la Géologie et ses Applications, 2004 41(2017), 4, Seite 633-647 (DE-627)378573098 (DE-600)2134777-3 (DE-576)110514106 1639-4488 nnns volume:41 year:2017 number:4 pages:633-647 http://dx.doi.org/10.1111/ggr.12176 Volltext http://onlinelibrary.wiley.com/doi/10.1111/ggr.12176/abstract https://search.proquest.com/docview/1979267275 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_22 GBV_ILN_40 38.59 AVZ 38.32 AVZ AR 41 2017 4 633-647 |
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10.1111/ggr.12176 doi PQ20171228 (DE-627)OLC1998702561 (DE-599)GBVOLC1998702561 (PRQ)p686-da6468132bcdafea55b389980a1030e2ccde88f33ded85498cbb31437e1869d30 (KEY)0012146020170000041000400633separationofplatinumfrompalladiumandiridiuminironm DE-627 ger DE-627 rakwb eng 550 DNB 38.59 bkl 38.32 bkl Hunt, Alison C verfasserin aut Separation of Platinum from Palladium and Iridium in Iron Meteorites and Accurate High‐Precision Determination of Platinum Isotopes by Multi‐Collector ICP‐MS 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier This study presents a new measurement procedure for the isolation of Pt from iron meteorite samples. The method also allows for the separation of Pd from the same sample aliquot. The separation entails a two‐stage anion‐exchange procedure. In the first stage, Pt and Pd are separated from each other and from major matrix constituents including Fe and Ni. In the second stage, Ir is reduced with ascorbic acid and eluted from the column before Pt collection. Platinum yields for the total procedure were typically 50–70%. After purification, high‐precision Pt isotope determinations were performed by multi‐collector ICP‐MS. The precision of the new method was assessed using the IIAB iron meteorite North Chile. Replicate analyses of multiple digestions of this material yielded an intermediate precision for the measurement results of 0.73 for ε 192 Pt, 0.15 for ε 194 Pt and 0.09 for ε 196 Pt (2 standard deviations). The NIST SRM 3140 Pt solution reference material was passed through the measurement procedure and yielded an isotopic composition that is identical to the unprocessed Pt reference material. This indicates that the new technique is unbiased within the limit of the estimated uncertainties. Data for three iron meteorites support that Pt isotope variations in these samples are due to exposure to galactic cosmic rays in space. Platinum was isolated from iron meteorites and determined by multi‐collector ICP‐MS. Platinum was separated from Pd, Ir, Os, and major matrix elements. Replicate analyses of the iron meteorite North Chile yielded a precision for the measurement results of 0.73 for ε 192 Pt and 0.09 for ε 196 Pt (2 standard deviations). Nutzungsrecht: © 2017 The Authors. published by John Wiley & Sons Ltd on behalf of the International Association of Geoanalysts. Pt isotopes multi‐collector ICP‐MS Pd isotopes iron meteorites ion‐exchange chemistry Measurement Separation Isotopes Anions Iridium Cosmic rays Isolation Water purification Methodology Vitamin C Cosmic radiation Platinum Reference materials Samples Iron Composition Palladium Meteors & meteorites Ek, Mattias oth Schönbächler, Maria oth Enthalten in Geostandards and geoanalytical research Vandoeuvre-lès-Nancy : Association Scientifique pour la Géologie et ses Applications, 2004 41(2017), 4, Seite 633-647 (DE-627)378573098 (DE-600)2134777-3 (DE-576)110514106 1639-4488 nnns volume:41 year:2017 number:4 pages:633-647 http://dx.doi.org/10.1111/ggr.12176 Volltext http://onlinelibrary.wiley.com/doi/10.1111/ggr.12176/abstract https://search.proquest.com/docview/1979267275 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_22 GBV_ILN_40 38.59 AVZ 38.32 AVZ AR 41 2017 4 633-647 |
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Enthalten in Geostandards and geoanalytical research 41(2017), 4, Seite 633-647 volume:41 year:2017 number:4 pages:633-647 |
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Pt isotopes multi‐collector ICP‐MS Pd isotopes iron meteorites ion‐exchange chemistry Measurement Separation Isotopes Anions Iridium Cosmic rays Isolation Water purification Methodology Vitamin C Cosmic radiation Platinum Reference materials Samples Iron Composition Palladium Meteors & meteorites |
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Hunt, Alison C |
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Hunt, Alison C ddc 550 bkl 38.59 bkl 38.32 misc Pt isotopes misc multi‐collector ICP‐MS misc Pd isotopes misc iron meteorites misc ion‐exchange chemistry misc Measurement misc Separation misc Isotopes misc Anions misc Iridium misc Cosmic rays misc Isolation misc Water purification misc Methodology misc Vitamin C misc Cosmic radiation misc Platinum misc Reference materials misc Samples misc Iron misc Composition misc Palladium misc Meteors & meteorites Separation of Platinum from Palladium and Iridium in Iron Meteorites and Accurate High‐Precision Determination of Platinum Isotopes by Multi‐Collector ICP‐MS |
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550 DNB 38.59 bkl 38.32 bkl Separation of Platinum from Palladium and Iridium in Iron Meteorites and Accurate High‐Precision Determination of Platinum Isotopes by Multi‐Collector ICP‐MS Pt isotopes multi‐collector ICP‐MS Pd isotopes iron meteorites ion‐exchange chemistry Measurement Separation Isotopes Anions Iridium Cosmic rays Isolation Water purification Methodology Vitamin C Cosmic radiation Platinum Reference materials Samples Iron Composition Palladium Meteors & meteorites |
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ddc 550 bkl 38.59 bkl 38.32 misc Pt isotopes misc multi‐collector ICP‐MS misc Pd isotopes misc iron meteorites misc ion‐exchange chemistry misc Measurement misc Separation misc Isotopes misc Anions misc Iridium misc Cosmic rays misc Isolation misc Water purification misc Methodology misc Vitamin C misc Cosmic radiation misc Platinum misc Reference materials misc Samples misc Iron misc Composition misc Palladium misc Meteors & meteorites |
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ddc 550 bkl 38.59 bkl 38.32 misc Pt isotopes misc multi‐collector ICP‐MS misc Pd isotopes misc iron meteorites misc ion‐exchange chemistry misc Measurement misc Separation misc Isotopes misc Anions misc Iridium misc Cosmic rays misc Isolation misc Water purification misc Methodology misc Vitamin C misc Cosmic radiation misc Platinum misc Reference materials misc Samples misc Iron misc Composition misc Palladium misc Meteors & meteorites |
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Separation of Platinum from Palladium and Iridium in Iron Meteorites and Accurate High‐Precision Determination of Platinum Isotopes by Multi‐Collector ICP‐MS |
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Separation of Platinum from Palladium and Iridium in Iron Meteorites and Accurate High‐Precision Determination of Platinum Isotopes by Multi‐Collector ICP‐MS |
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separation of platinum from palladium and iridium in iron meteorites and accurate high‐precision determination of platinum isotopes by multi‐collector icp‐ms |
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Separation of Platinum from Palladium and Iridium in Iron Meteorites and Accurate High‐Precision Determination of Platinum Isotopes by Multi‐Collector ICP‐MS |
| abstract |
This study presents a new measurement procedure for the isolation of Pt from iron meteorite samples. The method also allows for the separation of Pd from the same sample aliquot. The separation entails a two‐stage anion‐exchange procedure. In the first stage, Pt and Pd are separated from each other and from major matrix constituents including Fe and Ni. In the second stage, Ir is reduced with ascorbic acid and eluted from the column before Pt collection. Platinum yields for the total procedure were typically 50–70%. After purification, high‐precision Pt isotope determinations were performed by multi‐collector ICP‐MS. The precision of the new method was assessed using the IIAB iron meteorite North Chile. Replicate analyses of multiple digestions of this material yielded an intermediate precision for the measurement results of 0.73 for ε 192 Pt, 0.15 for ε 194 Pt and 0.09 for ε 196 Pt (2 standard deviations). The NIST SRM 3140 Pt solution reference material was passed through the measurement procedure and yielded an isotopic composition that is identical to the unprocessed Pt reference material. This indicates that the new technique is unbiased within the limit of the estimated uncertainties. Data for three iron meteorites support that Pt isotope variations in these samples are due to exposure to galactic cosmic rays in space. Platinum was isolated from iron meteorites and determined by multi‐collector ICP‐MS. Platinum was separated from Pd, Ir, Os, and major matrix elements. Replicate analyses of the iron meteorite North Chile yielded a precision for the measurement results of 0.73 for ε 192 Pt and 0.09 for ε 196 Pt (2 standard deviations). |
| abstractGer |
This study presents a new measurement procedure for the isolation of Pt from iron meteorite samples. The method also allows for the separation of Pd from the same sample aliquot. The separation entails a two‐stage anion‐exchange procedure. In the first stage, Pt and Pd are separated from each other and from major matrix constituents including Fe and Ni. In the second stage, Ir is reduced with ascorbic acid and eluted from the column before Pt collection. Platinum yields for the total procedure were typically 50–70%. After purification, high‐precision Pt isotope determinations were performed by multi‐collector ICP‐MS. The precision of the new method was assessed using the IIAB iron meteorite North Chile. Replicate analyses of multiple digestions of this material yielded an intermediate precision for the measurement results of 0.73 for ε 192 Pt, 0.15 for ε 194 Pt and 0.09 for ε 196 Pt (2 standard deviations). The NIST SRM 3140 Pt solution reference material was passed through the measurement procedure and yielded an isotopic composition that is identical to the unprocessed Pt reference material. This indicates that the new technique is unbiased within the limit of the estimated uncertainties. Data for three iron meteorites support that Pt isotope variations in these samples are due to exposure to galactic cosmic rays in space. Platinum was isolated from iron meteorites and determined by multi‐collector ICP‐MS. Platinum was separated from Pd, Ir, Os, and major matrix elements. Replicate analyses of the iron meteorite North Chile yielded a precision for the measurement results of 0.73 for ε 192 Pt and 0.09 for ε 196 Pt (2 standard deviations). |
| abstract_unstemmed |
This study presents a new measurement procedure for the isolation of Pt from iron meteorite samples. The method also allows for the separation of Pd from the same sample aliquot. The separation entails a two‐stage anion‐exchange procedure. In the first stage, Pt and Pd are separated from each other and from major matrix constituents including Fe and Ni. In the second stage, Ir is reduced with ascorbic acid and eluted from the column before Pt collection. Platinum yields for the total procedure were typically 50–70%. After purification, high‐precision Pt isotope determinations were performed by multi‐collector ICP‐MS. The precision of the new method was assessed using the IIAB iron meteorite North Chile. Replicate analyses of multiple digestions of this material yielded an intermediate precision for the measurement results of 0.73 for ε 192 Pt, 0.15 for ε 194 Pt and 0.09 for ε 196 Pt (2 standard deviations). The NIST SRM 3140 Pt solution reference material was passed through the measurement procedure and yielded an isotopic composition that is identical to the unprocessed Pt reference material. This indicates that the new technique is unbiased within the limit of the estimated uncertainties. Data for three iron meteorites support that Pt isotope variations in these samples are due to exposure to galactic cosmic rays in space. Platinum was isolated from iron meteorites and determined by multi‐collector ICP‐MS. Platinum was separated from Pd, Ir, Os, and major matrix elements. Replicate analyses of the iron meteorite North Chile yielded a precision for the measurement results of 0.73 for ε 192 Pt and 0.09 for ε 196 Pt (2 standard deviations). |
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Separation of Platinum from Palladium and Iridium in Iron Meteorites and Accurate High‐Precision Determination of Platinum Isotopes by Multi‐Collector ICP‐MS |
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http://dx.doi.org/10.1111/ggr.12176 http://onlinelibrary.wiley.com/doi/10.1111/ggr.12176/abstract https://search.proquest.com/docview/1979267275 |
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