The oxygen stable isotope composition of CRM 125-A UO
While there is a clear need for standardized reference materials for analytical calibrations and for inter-laboratory comparisons, there are not currently any for the oxygen stable isotopic composition of uranium oxides. In this paper we summarize the results from four laboratories by seven differen...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Oerter, Erik J. [verfasserIn] Singleton, Michael [verfasserIn] Pili, Eric [verfasserIn] Klosterman, Michael R. [verfasserIn] Shemesh, Aldo [verfasserIn] Agrinier, Pierre [verfasserIn] Deinhart, Amanda [verfasserIn] Yam, Ruth [verfasserIn] Assulin, Maor [verfasserIn] Elish, Eyal [verfasserIn] McDonald, Luther [verfasserIn] Tenner, Travis [verfasserIn] Kips, Ruth [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2022 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Applied geochemistry - Amsterdam [u.a.] : Elsevier Science, 1986, 146 |
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| Übergeordnetes Werk: |
volume:146 |
| DOI / URN: |
10.1016/j.apgeochem.2022.105470 |
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| 100 | 1 | |a Oerter, Erik J. |e verfasserin |0 (orcid)0000-0001-8816-1754 |4 aut | |
| 245 | 1 | 0 | |a The oxygen stable isotope composition of CRM 125-A UO |
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| 520 | |a While there is a clear need for standardized reference materials for analytical calibrations and for inter-laboratory comparisons, there are not currently any for the oxygen stable isotopic composition of uranium oxides. In this paper we summarize the results from four laboratories by seven different methods of oxygen stable isotope analyses using fluorination techniques of CRM 125-A UO2 Standard Reference Material. We synthesize these data and methods to arrive at a consensus oxygen stable isotope composition for CRM 125-A δ18O = −9.63‰ (±0.29‰) VSMOW. We discuss methodological differences between analytical approaches, including furnace vs laser heating, fluorination using BrF5 or ClF3, as well as calibration strategies. We highlight the potential effects of calibration scale compression from single-point calibrations using reference material with δ18O values having a large relative difference from the sample being analyzed. We demonstrate how calibration scale compression can yield differences in calibrated δ18O values up to ∼2‰ for samples with ∼20‰ difference from a single reference material, if the calibration slope of different analytical systems differs by 0.1. We suggest the use of liquid water calibration standards sealed in silver capillary tubes for multi-point calibrations of fluorination analysis systems. | ||
| 650 | 4 | |a Isotope geochemistry | |
| 650 | 4 | |a Nuclear forensics | |
| 650 | 4 | |a Uranium oxide | |
| 650 | 4 | |a Oxygen isotopes | |
| 700 | 1 | |a Singleton, Michael |e verfasserin |4 aut | |
| 700 | 1 | |a Pili, Eric |e verfasserin |4 aut | |
| 700 | 1 | |a Klosterman, Michael R. |e verfasserin |4 aut | |
| 700 | 1 | |a Shemesh, Aldo |e verfasserin |4 aut | |
| 700 | 1 | |a Agrinier, Pierre |e verfasserin |4 aut | |
| 700 | 1 | |a Deinhart, Amanda |e verfasserin |4 aut | |
| 700 | 1 | |a Yam, Ruth |e verfasserin |4 aut | |
| 700 | 1 | |a Assulin, Maor |e verfasserin |4 aut | |
| 700 | 1 | |a Elish, Eyal |e verfasserin |4 aut | |
| 700 | 1 | |a McDonald, Luther |e verfasserin |4 aut | |
| 700 | 1 | |a Tenner, Travis |e verfasserin |4 aut | |
| 700 | 1 | |a Kips, Ruth |e verfasserin |4 aut | |
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10.1016/j.apgeochem.2022.105470 doi (DE-627)ELV008673772 (ELSEVIER)S0883-2927(22)00274-8 DE-627 ger DE-627 rda eng 550 DE-600 38.32 bkl Oerter, Erik J. verfasserin (orcid)0000-0001-8816-1754 aut The oxygen stable isotope composition of CRM 125-A UO 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier While there is a clear need for standardized reference materials for analytical calibrations and for inter-laboratory comparisons, there are not currently any for the oxygen stable isotopic composition of uranium oxides. In this paper we summarize the results from four laboratories by seven different methods of oxygen stable isotope analyses using fluorination techniques of CRM 125-A UO2 Standard Reference Material. We synthesize these data and methods to arrive at a consensus oxygen stable isotope composition for CRM 125-A δ18O = −9.63‰ (±0.29‰) VSMOW. We discuss methodological differences between analytical approaches, including furnace vs laser heating, fluorination using BrF5 or ClF3, as well as calibration strategies. We highlight the potential effects of calibration scale compression from single-point calibrations using reference material with δ18O values having a large relative difference from the sample being analyzed. We demonstrate how calibration scale compression can yield differences in calibrated δ18O values up to ∼2‰ for samples with ∼20‰ difference from a single reference material, if the calibration slope of different analytical systems differs by 0.1. We suggest the use of liquid water calibration standards sealed in silver capillary tubes for multi-point calibrations of fluorination analysis systems. Isotope geochemistry Nuclear forensics Uranium oxide Oxygen isotopes Singleton, Michael verfasserin aut Pili, Eric verfasserin aut Klosterman, Michael R. verfasserin aut Shemesh, Aldo verfasserin aut Agrinier, Pierre verfasserin aut Deinhart, Amanda verfasserin aut Yam, Ruth verfasserin aut Assulin, Maor verfasserin aut Elish, Eyal verfasserin aut McDonald, Luther verfasserin aut Tenner, Travis verfasserin aut Kips, Ruth verfasserin aut Enthalten in Applied geochemistry Amsterdam [u.a.] : Elsevier Science, 1986 146 Online-Ressource (DE-627)306648091 (DE-600)1499242-5 (DE-576)08198426X nnns volume:146 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.32 Geochemie AR 146 |
| spelling |
10.1016/j.apgeochem.2022.105470 doi (DE-627)ELV008673772 (ELSEVIER)S0883-2927(22)00274-8 DE-627 ger DE-627 rda eng 550 DE-600 38.32 bkl Oerter, Erik J. verfasserin (orcid)0000-0001-8816-1754 aut The oxygen stable isotope composition of CRM 125-A UO 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier While there is a clear need for standardized reference materials for analytical calibrations and for inter-laboratory comparisons, there are not currently any for the oxygen stable isotopic composition of uranium oxides. In this paper we summarize the results from four laboratories by seven different methods of oxygen stable isotope analyses using fluorination techniques of CRM 125-A UO2 Standard Reference Material. We synthesize these data and methods to arrive at a consensus oxygen stable isotope composition for CRM 125-A δ18O = −9.63‰ (±0.29‰) VSMOW. We discuss methodological differences between analytical approaches, including furnace vs laser heating, fluorination using BrF5 or ClF3, as well as calibration strategies. We highlight the potential effects of calibration scale compression from single-point calibrations using reference material with δ18O values having a large relative difference from the sample being analyzed. We demonstrate how calibration scale compression can yield differences in calibrated δ18O values up to ∼2‰ for samples with ∼20‰ difference from a single reference material, if the calibration slope of different analytical systems differs by 0.1. We suggest the use of liquid water calibration standards sealed in silver capillary tubes for multi-point calibrations of fluorination analysis systems. Isotope geochemistry Nuclear forensics Uranium oxide Oxygen isotopes Singleton, Michael verfasserin aut Pili, Eric verfasserin aut Klosterman, Michael R. verfasserin aut Shemesh, Aldo verfasserin aut Agrinier, Pierre verfasserin aut Deinhart, Amanda verfasserin aut Yam, Ruth verfasserin aut Assulin, Maor verfasserin aut Elish, Eyal verfasserin aut McDonald, Luther verfasserin aut Tenner, Travis verfasserin aut Kips, Ruth verfasserin aut Enthalten in Applied geochemistry Amsterdam [u.a.] : Elsevier Science, 1986 146 Online-Ressource (DE-627)306648091 (DE-600)1499242-5 (DE-576)08198426X nnns volume:146 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.32 Geochemie AR 146 |
| allfields_unstemmed |
10.1016/j.apgeochem.2022.105470 doi (DE-627)ELV008673772 (ELSEVIER)S0883-2927(22)00274-8 DE-627 ger DE-627 rda eng 550 DE-600 38.32 bkl Oerter, Erik J. verfasserin (orcid)0000-0001-8816-1754 aut The oxygen stable isotope composition of CRM 125-A UO 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier While there is a clear need for standardized reference materials for analytical calibrations and for inter-laboratory comparisons, there are not currently any for the oxygen stable isotopic composition of uranium oxides. In this paper we summarize the results from four laboratories by seven different methods of oxygen stable isotope analyses using fluorination techniques of CRM 125-A UO2 Standard Reference Material. We synthesize these data and methods to arrive at a consensus oxygen stable isotope composition for CRM 125-A δ18O = −9.63‰ (±0.29‰) VSMOW. We discuss methodological differences between analytical approaches, including furnace vs laser heating, fluorination using BrF5 or ClF3, as well as calibration strategies. We highlight the potential effects of calibration scale compression from single-point calibrations using reference material with δ18O values having a large relative difference from the sample being analyzed. We demonstrate how calibration scale compression can yield differences in calibrated δ18O values up to ∼2‰ for samples with ∼20‰ difference from a single reference material, if the calibration slope of different analytical systems differs by 0.1. We suggest the use of liquid water calibration standards sealed in silver capillary tubes for multi-point calibrations of fluorination analysis systems. Isotope geochemistry Nuclear forensics Uranium oxide Oxygen isotopes Singleton, Michael verfasserin aut Pili, Eric verfasserin aut Klosterman, Michael R. verfasserin aut Shemesh, Aldo verfasserin aut Agrinier, Pierre verfasserin aut Deinhart, Amanda verfasserin aut Yam, Ruth verfasserin aut Assulin, Maor verfasserin aut Elish, Eyal verfasserin aut McDonald, Luther verfasserin aut Tenner, Travis verfasserin aut Kips, Ruth verfasserin aut Enthalten in Applied geochemistry Amsterdam [u.a.] : Elsevier Science, 1986 146 Online-Ressource (DE-627)306648091 (DE-600)1499242-5 (DE-576)08198426X nnns volume:146 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.32 Geochemie AR 146 |
| allfieldsGer |
10.1016/j.apgeochem.2022.105470 doi (DE-627)ELV008673772 (ELSEVIER)S0883-2927(22)00274-8 DE-627 ger DE-627 rda eng 550 DE-600 38.32 bkl Oerter, Erik J. verfasserin (orcid)0000-0001-8816-1754 aut The oxygen stable isotope composition of CRM 125-A UO 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier While there is a clear need for standardized reference materials for analytical calibrations and for inter-laboratory comparisons, there are not currently any for the oxygen stable isotopic composition of uranium oxides. In this paper we summarize the results from four laboratories by seven different methods of oxygen stable isotope analyses using fluorination techniques of CRM 125-A UO2 Standard Reference Material. We synthesize these data and methods to arrive at a consensus oxygen stable isotope composition for CRM 125-A δ18O = −9.63‰ (±0.29‰) VSMOW. We discuss methodological differences between analytical approaches, including furnace vs laser heating, fluorination using BrF5 or ClF3, as well as calibration strategies. We highlight the potential effects of calibration scale compression from single-point calibrations using reference material with δ18O values having a large relative difference from the sample being analyzed. We demonstrate how calibration scale compression can yield differences in calibrated δ18O values up to ∼2‰ for samples with ∼20‰ difference from a single reference material, if the calibration slope of different analytical systems differs by 0.1. We suggest the use of liquid water calibration standards sealed in silver capillary tubes for multi-point calibrations of fluorination analysis systems. Isotope geochemistry Nuclear forensics Uranium oxide Oxygen isotopes Singleton, Michael verfasserin aut Pili, Eric verfasserin aut Klosterman, Michael R. verfasserin aut Shemesh, Aldo verfasserin aut Agrinier, Pierre verfasserin aut Deinhart, Amanda verfasserin aut Yam, Ruth verfasserin aut Assulin, Maor verfasserin aut Elish, Eyal verfasserin aut McDonald, Luther verfasserin aut Tenner, Travis verfasserin aut Kips, Ruth verfasserin aut Enthalten in Applied geochemistry Amsterdam [u.a.] : Elsevier Science, 1986 146 Online-Ressource (DE-627)306648091 (DE-600)1499242-5 (DE-576)08198426X nnns volume:146 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.32 Geochemie AR 146 |
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10.1016/j.apgeochem.2022.105470 doi (DE-627)ELV008673772 (ELSEVIER)S0883-2927(22)00274-8 DE-627 ger DE-627 rda eng 550 DE-600 38.32 bkl Oerter, Erik J. verfasserin (orcid)0000-0001-8816-1754 aut The oxygen stable isotope composition of CRM 125-A UO 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier While there is a clear need for standardized reference materials for analytical calibrations and for inter-laboratory comparisons, there are not currently any for the oxygen stable isotopic composition of uranium oxides. In this paper we summarize the results from four laboratories by seven different methods of oxygen stable isotope analyses using fluorination techniques of CRM 125-A UO2 Standard Reference Material. We synthesize these data and methods to arrive at a consensus oxygen stable isotope composition for CRM 125-A δ18O = −9.63‰ (±0.29‰) VSMOW. We discuss methodological differences between analytical approaches, including furnace vs laser heating, fluorination using BrF5 or ClF3, as well as calibration strategies. We highlight the potential effects of calibration scale compression from single-point calibrations using reference material with δ18O values having a large relative difference from the sample being analyzed. We demonstrate how calibration scale compression can yield differences in calibrated δ18O values up to ∼2‰ for samples with ∼20‰ difference from a single reference material, if the calibration slope of different analytical systems differs by 0.1. We suggest the use of liquid water calibration standards sealed in silver capillary tubes for multi-point calibrations of fluorination analysis systems. Isotope geochemistry Nuclear forensics Uranium oxide Oxygen isotopes Singleton, Michael verfasserin aut Pili, Eric verfasserin aut Klosterman, Michael R. verfasserin aut Shemesh, Aldo verfasserin aut Agrinier, Pierre verfasserin aut Deinhart, Amanda verfasserin aut Yam, Ruth verfasserin aut Assulin, Maor verfasserin aut Elish, Eyal verfasserin aut McDonald, Luther verfasserin aut Tenner, Travis verfasserin aut Kips, Ruth verfasserin aut Enthalten in Applied geochemistry Amsterdam [u.a.] : Elsevier Science, 1986 146 Online-Ressource (DE-627)306648091 (DE-600)1499242-5 (DE-576)08198426X nnns volume:146 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.32 Geochemie AR 146 |
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The oxygen stable isotope composition of CRM 125-A UO |
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Oerter, Erik J. Singleton, Michael Pili, Eric Klosterman, Michael R. Shemesh, Aldo Agrinier, Pierre Deinhart, Amanda Yam, Ruth Assulin, Maor Elish, Eyal McDonald, Luther Tenner, Travis Kips, Ruth |
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the oxygen stable isotope composition of crm 125-a uo |
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The oxygen stable isotope composition of CRM 125-A UO |
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While there is a clear need for standardized reference materials for analytical calibrations and for inter-laboratory comparisons, there are not currently any for the oxygen stable isotopic composition of uranium oxides. In this paper we summarize the results from four laboratories by seven different methods of oxygen stable isotope analyses using fluorination techniques of CRM 125-A UO2 Standard Reference Material. We synthesize these data and methods to arrive at a consensus oxygen stable isotope composition for CRM 125-A δ18O = −9.63‰ (±0.29‰) VSMOW. We discuss methodological differences between analytical approaches, including furnace vs laser heating, fluorination using BrF5 or ClF3, as well as calibration strategies. We highlight the potential effects of calibration scale compression from single-point calibrations using reference material with δ18O values having a large relative difference from the sample being analyzed. We demonstrate how calibration scale compression can yield differences in calibrated δ18O values up to ∼2‰ for samples with ∼20‰ difference from a single reference material, if the calibration slope of different analytical systems differs by 0.1. We suggest the use of liquid water calibration standards sealed in silver capillary tubes for multi-point calibrations of fluorination analysis systems. |
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While there is a clear need for standardized reference materials for analytical calibrations and for inter-laboratory comparisons, there are not currently any for the oxygen stable isotopic composition of uranium oxides. In this paper we summarize the results from four laboratories by seven different methods of oxygen stable isotope analyses using fluorination techniques of CRM 125-A UO2 Standard Reference Material. We synthesize these data and methods to arrive at a consensus oxygen stable isotope composition for CRM 125-A δ18O = −9.63‰ (±0.29‰) VSMOW. We discuss methodological differences between analytical approaches, including furnace vs laser heating, fluorination using BrF5 or ClF3, as well as calibration strategies. We highlight the potential effects of calibration scale compression from single-point calibrations using reference material with δ18O values having a large relative difference from the sample being analyzed. We demonstrate how calibration scale compression can yield differences in calibrated δ18O values up to ∼2‰ for samples with ∼20‰ difference from a single reference material, if the calibration slope of different analytical systems differs by 0.1. We suggest the use of liquid water calibration standards sealed in silver capillary tubes for multi-point calibrations of fluorination analysis systems. |
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While there is a clear need for standardized reference materials for analytical calibrations and for inter-laboratory comparisons, there are not currently any for the oxygen stable isotopic composition of uranium oxides. In this paper we summarize the results from four laboratories by seven different methods of oxygen stable isotope analyses using fluorination techniques of CRM 125-A UO2 Standard Reference Material. We synthesize these data and methods to arrive at a consensus oxygen stable isotope composition for CRM 125-A δ18O = −9.63‰ (±0.29‰) VSMOW. We discuss methodological differences between analytical approaches, including furnace vs laser heating, fluorination using BrF5 or ClF3, as well as calibration strategies. We highlight the potential effects of calibration scale compression from single-point calibrations using reference material with δ18O values having a large relative difference from the sample being analyzed. We demonstrate how calibration scale compression can yield differences in calibrated δ18O values up to ∼2‰ for samples with ∼20‰ difference from a single reference material, if the calibration slope of different analytical systems differs by 0.1. We suggest the use of liquid water calibration standards sealed in silver capillary tubes for multi-point calibrations of fluorination analysis systems. |
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