Rapid determination of limestone using photoacoustic spectroscopy

Application of infrared photoacoustic spectroscopy in catalysis

“…It has to be underline the applications of the discussed technique for the investigation of industrial materials or studies having an influence on the industrial production [64]. Those studies covers an analysis of coatings [65,66], rapid determination of limestone in lime products [67], spectra of distillation fractions derived from syncrude heavy gas oil [68], light gas oil [69], post-extraction oil sand [70]. Yang and Simms [71] have compared PA, diffuse reflectance (DR) and transmission IR spectra of the studied carbon fibres.…”

Photoacoustic Detection of Weak Absorption Bands in Infrared Spectra of Calcite

“…Calcite, the material under investigation in the present work, has been widely studied using FT-IR transmission and ATR techniques, but very little by PAS. [4][5][6][7][8] Calcium carbonate polymorphs, including CaCO 3 , appear naturally in many instances and are of importance to materials scientists, archaeologists, and those who study biomineralization. [9][10][11] FT-IR spectroscopy offers distinct advantages relative to diffraction-based techniques because calcium carbonate polymorphs can be easily differentiated from each other even when they are poorly crystallized.…”