A Rapid and High-Yield Procedure for Separation of Cr from Meteorites and Rock Samples for Isotopic Analysis

肖 瑶; 横山 哲也

doi:10.14862/geochemproc.72.0_119

Abstracts of Annual Meeting of the Geochemical Society of Japan

DOI https://doi.org/10.14862/geochemproc.72.0_119

Conference information

Host: Abstracts of Annual Meeting of the Geochemical Society of Japan

Name : Abstracts of Annual Meeting of the Geochemical Society of Japan

Number : 72

Date : September 07, 2025 - September 19, 2025

A Rapid and High-Yield Procedure for Separation of Cr from Meteorites and Rock Samples for Isotopic Analysis

*XIAO YAO, YOKOYAMA TETSUYA

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Keywords: Column chromatography, Chromium isotopes, chemical separation

CONFERENCE PROCEEDINGS FREE ACCESS

Pages 119-

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Abstract

Mass-independent Cr isotopes are powerful tracers of early solar system evolution. We developed a rapid and high-yield purification method applicable to small samples (＜5 mg). A combination of multi-acid digestion and three-step column chemistry achieves >95% Cr recovery within one week. This technique enables precise Cr isotope analysis of rare planetary materials with minimal sample consumption.

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