Analysis of Cation Composition in Dolomites on the Intact Particles Sampled from Asteroid Ryugu.
Journal
Analytical chemistry
ISSN: 1520-6882
Titre abrégé: Anal Chem
Pays: United States
ID NLM: 0370536
Informations de publication
Date de publication:
28 Dec 2023
28 Dec 2023
Historique:
medline:
29
12
2023
pubmed:
29
12
2023
entrez:
29
12
2023
Statut:
aheadofprint
Résumé
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 of micro-XRF imaging enabled a quick search for the sparsely scattered and micrometer-sized carbonates by the codistributions of Ca
Identifiants
pubmed: 38155534
doi: 10.1021/acs.analchem.3c03463
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM