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.