Estimation of particle size by DRIFTS and FTIR-PAS

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Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and Fourier transform infrared photoacoustic spectroscopy (FTIR-PAS) were used to study particle size and distribution of sucrose powder. Partial least squares (PLS) regression was used to correlate spectral data with particle size. FTIR-PAS spectra were similar to the spectra obtained using DRIFTS when the sample is mixed with 95% potassium bromide (KBr). Both DRIFTS and FTIR-PAS methods can successfully predict the mean panicle size and concentration in binary and quaternary mixtures. R-square values for both DRIFTS and FTIR-PAS are greater than 0.9.

Original languageEnglish (US)
Pages (from-to)269-282
Number of pages14
JournalParticulate Science and Technology
Issue number4
StatePublished - 1999
Externally publishedYes

ASJC Scopus subject areas

  • General Chemical Engineering


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