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Importance of self-absorption correction for HERFD-XAS of concentrated samples

31 January 2025, Version 1
Working Paper
This content is an early or alternative research output and has not been peer-reviewed by Cambridge University Press at the time of posting.

Abstract

High energy resolution fluorescence detected X-ray absorption spectroscopy (HERFD-XAS) can dramatically reduce core-hole lifetime broadening that smears out spectroscopic detail in conventional X-ray absorption spectroscopy (XAS). This increased spectroscopic resolution can directly translate to increased speciation capabilities in analysis of complex mixtures. However, spectral distortions due to fluorescence self-absorption are inherent in the HERFD-XAS method and can negate improvements. We discuss a method for correcting self-absorption.

Keywords

Self-absorption correction
HERFD-XAS
arsenic
lead

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Version History

Jan 31, 2025 Version 1

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The content is available under CC BY 4.0 [opens in a new tab]

DOI

10.26434/chemrxiv-2025-w64t8
D O I: 10.26434/chemrxiv-2025-w64t8 [opens in a new tab]

Funding

Natural Sciences and Engineering Research Council of Canada
RGPIN-2022-04959
Natural Sciences and Engineering Research Council of Canada
RGPIN-2019-05351
New Frontiers in Research Fund
NFRFE-2021-00909
Natural Sciences and Engineering Research Council of Canada
CREATE 555378-2021
Canada Research Chairs
CRC-2019-00162
Canada Research Chairs
CRC-2016-00092

Author’s competing interest statement

The author(s) have declared they have no conflict of interest with regard to this content

Ethics

The author(s) have declared ethics committee/IRB approval is not relevant to this content

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