Precise measurements of δ88/86Sr for twenty geological reference materials by double-spike MC-ICP-MS

Chen, Xu-Qi; Zeng, Zhi‐Gao; Yu, Haiying; Sun, Nan; Huang, Fang

doi:10.1016/j.ijms.2022.116883

Cited by 8 publications

(3 citation statements)

References 52 publications

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“…The remaining solutions were analyzed for radiogenic Sr isotope, stable Mg and Fe isotope compositions at the CAS Key Laboratory of Crust-Mantle Materials and Environments at the University of Science and Technology of China (USTC) using a Neptune Plus MC-ICP-MS (Tables A2 and A3). First, the Sr aliquots were collected following the method developed by Chen et al (2022). Briefly, Sr was purified using the AG50W-X12 resin (200-400 mesh).…”

Section: A3 Bulk Sr Mg and Fe Isotopes Analysismentioning

confidence: 99%

Fe and Mg Isotope Compositions Indicate a Hybrid Mantle Source for Young Chang’E 5 Mare Basalts

Jiang

Kang

Liao

et al. 2023

ApJL

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The Chang’E 5 (CE-5) samples represent the youngest mare basalt ever known and provide an access into the late lunar evolution. Recent studies have revealed that CE-5 basalts are the most evolved lunar basalts, yet controversy remains over the nature of their mantle sources. Here we combine Fe and Mg isotope analyses with a comprehensive study of petrology and mineralogy on two CE-5 basalt clasts. These two clasts have a very low Mg# (∼29) and show similar Mg isotope compositions to Apollo low-Ti mare basalts as well as intermediate TiO2 and Fe isotope compositions between low-Ti and high-Ti mare basalts. Fractional crystallization or evaporation during impact cannot produce such geochemical signatures that otherwise indicate a hybrid mantle source that incorporates both early- and late-stage lunar magma ocean (LMO) cumulates. Such a hybrid mantle source would be also compatible with the KREEP-like Rare Earth Elements pattern of CE-5 basalts. Overall, our new Fe–Mg isotope data highlight the role of late LMO cumulate for the generation of young lunar volcanism.

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Section: A3 Bulk Sr Mg and Fe Isotopes Analysismentioning

confidence: 99%

Fe and Mg Isotope Compositions Indicate a Hybrid Mantle Source for Young Chang’E 5 Mare Basalts

Jiang

Kang

Liao

et al. 2023

ApJL

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“…2019, Chen et al . 2022). To test the influence of nitric acid molarities on U isotope measurements, the USTC‐U solutions were diluted to 25 ng g ‐1 with 1% m/m to 5% m/m HNO 3 , and bracketed by 25 ng g ‐1 USTC‐U solutions diluted by 2% m/m HNO 3 .…”

Section: Resultsmentioning

confidence: 99%

“…Instrumental measurements: Previous studies showed that acidity and concentration of analysed aliquots and double-spike dosages may cause artefacts in metal stable isotope analyses (Tian et al 2019, Chen et al 2022. To test the influence of nitric acid molarities on U isotope measurements, the USTC-U solutions were diluted to 25 ng g -1 with 1% m/m to 5% m/m HNO 3 , and bracketed by 25 ng g -1 USTC-U solutions diluted by 2% m/m HNO 3 .…”

Section: Mc-icp-ms Measurementsmentioning

confidence: 99%

δ²³⁸U of Coal Reference Materials Determined by MC‐ICP‐MS

Sheng,

Li,

Owens

et al. 2023

Geostandard Geoanalytic Res

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Uranium (U) associated with coal can be an important source of U and result in environmental pollution during coal combustion. In this study, we developed a method for measurement of U isotope ratios in coals using multiple‐collector inductively coupled plasma‐mass spectrometry. The 233U‐236U double‐spike was utilised to calibrate the instrumental isotopic fractionation. High‐pressure bomb and dry ashing were adopted to digest the coal samples. The δ238UCRM‐145 values obtained from the two different digestion procedures were in good agreement. The δ238UCRM‐145 of seven coal and one fly ash reference materials are reported. Furthermore, the results of fly ash, bottom ash and feed coal samples reveal that the combustion processes lead to relatively small U isotopic fractionation between the samples within the same coal‐fired power plant, indicating that U isotope data can be used as a tracer for heavy metal pollution resulting from coal combustion. The U isotope measurement method of coal established in this study provides technical support to understand the behaviour of U during coal formation and combustion.

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Effect of terrestrial weathering on stable Sr and Ba isotope compositions of eucrites

Nie,

Kang,

Jiang

et al. 2024

Geochimica et Cosmochimica Acta

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Precise measurements of δ88/86Sr for twenty geological reference materials by double-spike MC-ICP-MS

Cited by 8 publications

References 52 publications

Fe and Mg Isotope Compositions Indicate a Hybrid Mantle Source for Young Chang’E 5 Mare Basalts

Fe and Mg Isotope Compositions Indicate a Hybrid Mantle Source for Young Chang’E 5 Mare Basalts

δ²³⁸U of Coal Reference Materials Determined by MC‐ICP‐MS

Effect of terrestrial weathering on stable Sr and Ba isotope compositions of eucrites

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Precise measurements of δ88/86Sr for twenty geological reference materials by double-spike MC-ICP-MS

Cited by 8 publications

References 52 publications

Fe and Mg Isotope Compositions Indicate a Hybrid Mantle Source for Young Chang’E 5 Mare Basalts

Fe and Mg Isotope Compositions Indicate a Hybrid Mantle Source for Young Chang’E 5 Mare Basalts

δ238U of Coal Reference Materials Determined by MC‐ICP‐MS

Effect of terrestrial weathering on stable Sr and Ba isotope compositions of eucrites

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δ²³⁸U of Coal Reference Materials Determined by MC‐ICP‐MS