Abstract

Diffuse near-infrared reflectance spectroscopy has traditionally been an analytical technique for determining chemical compositions in a sample. We will, in this paper, focus on light scattering effects and their ability to determine the mean particle sizes of powders. The reflectance data of NaCl, broken glass, and sorbitol powders are linearized and submitted to the Multiplicative Scatter Correction (MSC), and the ensuing parameters are used in subsequent multivariate calibrations. The results indicate that particle size can, to a large degree, be determined from NIR reflectance data for a given type of powder. Up to 99% of the partical size variance was explained by the regression.

Determination of scattering volume fraction and particle size distribution in the superficial layer of a turbid medium by using diffuse reflectance spectroscopy

Yasser S. Fawzy and Haishan Zeng
Appl. Opt. 45(16) 3902-3912 (2006)

Optical Scattering by Dielectric Powders of Uniform Particle Size*

J. R. DeVore and A. H. Pfund
J. Opt. Soc. Am. 37(10) 826-832 (1947)

Quantitative reflectance spectra of solid powders as a function of particle size

Tanya L. Myers, Carolyn S. Brauer, Yin-Fong Su, Thomas A. Blake, Russell G. Tonkyn, Alyssa B. Ertel, Timothy J. Johnson, and Robert L. Richardson
Appl. Opt. 54(15) 4863-4875 (2015)

Determination of the Optical Absorption Coefficient of Powdered Materials Whose Particle Size Distribution and Refractive Indices Are Unknown

James D. Lindberg and David G. Snyder
Appl. Opt. 12(3) 573-578 (1973)

Infrared optical constants of black powders determined from reflection measurements

V. P. Tomaselli, R. Rivera, D. C. Edewaard, and K. D. Möller
Appl. Opt. 20(22) 3961-3967 (1981)