Determination of Re, Os, Ir, Ru, Pt, Pd Mass Fractions and Os-187/Os-188 Ratios of Organic-Rich Geological Reference Materials

Mengjie Wang; Zhuyin Chu; Thomas C. Meisel; Jinghui Guo

doi:10.1111/ggr.12423

Determination of Re, Os, Ir, Ru, Pt, Pd Mass Fractions and Os-187/Os-188 Ratios of Organic-Rich Geological Reference Materials

Mengjie Wang, Zhuyin Chu, Thomas C. Meisel, Jinghui Guo

Lehrstuhl für Allgemeine und Analytische Chemie (120)

Chinesische Akademie der Wissenschaften, Peking

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Begutachtung

Abstract

At present, reported data for Re-PGE mass fractions (in particular) and 187Os/188Os isotope ratios of organic-rich reference materials (RMs) are rare, hampering the comparison of data quality between different laboratories. In this study, we measured the Re-PGE (Os, Ir, Ru, Pt and Pd) mass fractions, as well as 187Os/188Os isotope ratios of five shale RMs, including USGS SGR-1b (oil shale), SBC-1 (marine shale), SCo-2 (silty marine shale), ShTX-1 (calcareous organic-rich shale) and ShCX-1 (calcareous shale), and one oil RM, NIST RM 8505. The results show that the five shale RMs have similar upper continental crust-normalised PGE-Re patterns and are generally homogeneous in Re-PGE mass fractions and 187Os/188Os isotope ratios at test portions of 0.2–0.5 g, and thus can be used as matrix-matched RMs for Re-Os and PGE of shale samples. The oil RM NIST 8505 and its asphaltene separates are also roughly homogeneous in Re-PGE mass fractions and 187Os/188Os isotope ratios at test portions of 0.1–0.3 g and can potentially be used as an oil RM for Re-Os and PGE.

Originalsprache	Englisch
Seiten (von - bis)	333-349
Seitenumfang	17
Fachzeitschrift	Geostandards and Geoanalytical Research
Jahrgang	46.2022
Ausgabenummer	2
Frühes Online-Datum	13 März 2022
DOIs	https://doi.org/10.1111/ggr.12423
Publikationsstatus	Veröffentlicht - 11 Apr. 2022

Bibliographische Notiz

Funding Information:
This research was funded by the National Key Research and Development Project of China (2020YFA0714803) and the National Science Foundation of China (42073050). Yueheng Yang, Lei Xu, Chao Huang, Bingyu Gao and Wenjun Li are thankful for their help on MC‐ICP‐MS measurements of Re‐PGE. The authors have no conflicts of interest to declare. Two anonymous reviewers are sincerely thanked for their constructive comments that help greatly improve the quality of this manuscript.

Publisher Copyright:
© 2022 The Authors. Geostandards and Geoanalytical Research © 2022 International Association of Geoanalysts.

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title = "Determination of Re, Os, Ir, Ru, Pt, Pd Mass Fractions and Os-187/Os-188 Ratios of Organic-Rich Geological Reference Materials",

abstract = "At present, reported data for Re-PGE mass fractions (in particular) and 187Os/188Os isotope ratios of organic-rich reference materials (RMs) are rare, hampering the comparison of data quality between different laboratories. In this study, we measured the Re-PGE (Os, Ir, Ru, Pt and Pd) mass fractions, as well as 187Os/188Os isotope ratios of five shale RMs, including USGS SGR-1b (oil shale), SBC-1 (marine shale), SCo-2 (silty marine shale), ShTX-1 (calcareous organic-rich shale) and ShCX-1 (calcareous shale), and one oil RM, NIST RM 8505. The results show that the five shale RMs have similar upper continental crust-normalised PGE-Re patterns and are generally homogeneous in Re-PGE mass fractions and 187Os/188Os isotope ratios at test portions of 0.2–0.5 g, and thus can be used as matrix-matched RMs for Re-Os and PGE of shale samples. The oil RM NIST 8505 and its asphaltene separates are also roughly homogeneous in Re-PGE mass fractions and 187Os/188Os isotope ratios at test portions of 0.1–0.3 g and can potentially be used as an oil RM for Re-Os and PGE.",

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