High-Energy Resolution Fluorescence Detected X-ray Absorption Spectroscopy for the Speciation of Fe in Aerosol Samples

In this study, we compared the high-energy resolution X-ray fluorescence absorption near-edge structure (HERFD-XANES) and normal XANES spectra of various iron (Fe) species Fe in atmospheric aerosol samples to explore advantages K-edge HERFD-XANES for speciation aerosols using linear combination fitting (LCF) spectra. We also conducted extraction experiments validate LCF-XANES. spectra, pre-edge region showed specific structures absent XANES. produced more distinctive shoulders within each spectrum than was applied an sample (MT21-S2) collected Tokyo, Japan. Normal identified ferrihydrite, biotite, montmorillonite, whereas clearly detected goethite as a fourth component. did not distinguish between ferrihydrite LCF because their similar structures. A trend observed region, experiment result consistent with region. Thus, HERFD-XANES, particular can be powerful tool aerosols.