Issue 5, 2023

Determination of broadband-light atomic absorption through interferometric spectrometry with a spatial heterodyne spectrometer

Abstract

A spatial heterodyne spectrometer (SHS) was combined with a flame atomic absorption (FAA) setup to reveal the analytical potential of SHS to be used as a tool for high-resolution atomic absorption studies. Exploiting the advances in modern computational power, the spectral information encoded in the interferograms was extracted and separated. Consequently, unseeable interferometric ingredients corresponding to narrow-band absorption lines could be recognized. Namely, a single SHS absorption interferogram simultaneously contains both illumination background and absorption information, which can be distinguished through a series of computational steps. In the examples given by this work, we demonstrate the construction of Na absorbance spectra from a single image. The described single-image approach can be used to investigate highly dynamic systems, whereby background collections can be obviated.

Graphical abstract: Determination of broadband-light atomic absorption through interferometric spectrometry with a spatial heterodyne spectrometer

Supplementary files

Article information

Article type
Paper
Submitted
11 nov 2022
Accepted
30 mrt 2023
First published
31 mrt 2023

J. Anal. At. Spectrom., 2023,38, 1088-1096

Determination of broadband-light atomic absorption through interferometric spectrometry with a spatial heterodyne spectrometer

X. Li, J. Riedel and Y. You, J. Anal. At. Spectrom., 2023, 38, 1088 DOI: 10.1039/D2JA00367H

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