Single particle analysis by the combined use of quantitative ED-EPMA, Raman microspectrometry, and ATR-FT-IR imaging techniques

Abstract

In this work, the practical applicability of the combined use of low-Z particle electron probe X- ray microanalysis (EPMA), Raman microspectrometry (RMS), and attenuated total reflectance (ATR) FT- IR imaging techniques for the characterization of individual aerosol particles is demonstrated. These three single particle analytical techniques provide complementary information on the physicochemical characteristics of the same individual particles, that is, the low-Z particle EPMA for the information on the morphology and elemental concentration; Raman microspectrometry on the functional group, molecular species, and chemical mixing states; and ATR-FT-IR imaging on the functional group, molecular species, and crystal structure.zation of individual aerosol particles is demonstrated. These three single particle analytical techniques provide complementary information on the physicochemical characteristics of the same individual particles, that is, the low-Z particle EPMA for the information on the morphology and elemental concentration; Raman microspectrometry on the functional group, molecular species, and chemical mixing states; and ATR-FT-IR imaging on the functional group, molecular species, and crystal structure.