Analysis of Cation Composition in Dolomites on the Intact Particles Sampled from Asteroid Ryugu.

ABSTRACT: Characterization of the elemental distribution of samples with rough surfaces has been strongly desired for the analysis of various natural and artificial materials. Particularly for pristine and rare analytes with micrometer sizes embedded on specimen surfaces, non-invasive and matrix effect-free analysis is required without surface polishing treatment. To satisfy these requirements, we proposed a new method employing the sequential combination of two imaging modalities, i.e., microenergy-dispersive X-ray fluorescence (micro-XRF) and Raman micro-spectroscopy. The applicability of the developed method is tested by the quantitative analysis of cation composition in micrometer-sized carbonate grains on the surfaces of intact particles sampled directly from the asteroid Ryugu. The first step

SUBMITTER: Morita M 

PROVIDER: S-EPMC10783172 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature