title: Speciation of individual mineral particles of micrometer size by the combined use of attenuated total reflectance-Fourier transform-infrared imaging and quantitative energy-dispersive electron probe X-ray microanalysis techniques.
abstract: Our previous work demonstrated for the first time the potential of the combined use of two techniques, attenuated total reflectance FT-IR (ATR-FT-IR) imaging and a quantitative energy-dispersive electron probe X-ray microanalysis, low-Z particle EPMA, for the characterization of individual aerosol particles. In this work, the speciation of mineral particles was performed on a single particle level for 24 mineral samples, including kaolinite, montmorillonite, vermiculite, talc, quartz, feldspar, calcite, gypsum, and apatite, by the combined use of ATR-FT-IR imaging and low-Z particle EPMA techniques. These two single particle analytical techniques provide complementary information, the ATR-FT-IR imaging on mineral types and low-Z particle EPMA on the morphology and elemental concentrations, on the same individual particles. This work demonstrates that the combined use of the two single particle analytical techniques can powerfully characterize externally heterogeneous mineral particle samples in detail and has great potential for the characterization of airborne mineral dust particles.
authors.affiliation: Department of Chemistry, Inha University, 253, Yonghyun-dong, Nam-gu, Incheon 402-751, Korea.
authors.forename: Hae-Jin
authors.initials: HJ
authors.lastname: Jung
authors.forename: Md Abdul
authors.initials: MA
authors.lastname: Malek
authors.forename: JiYeon
authors.initials: J
authors.lastname: Ryu
authors.forename: BoWha
authors.initials: B
authors.lastname: Kim
authors.forename: Young-Chul
authors.initials: YC
authors.lastname: Song
authors.forename: HyeKyeong
authors.initials: H
authors.lastname: Kim
authors.forename: Chul-Un
authors.initials: CU
authors.lastname: Ro