Extraction of chemical information of suspensions using radiative transfer theory to remove multiple scattering effects : application to a model multicomponent system

Steponavicius, Raimundas and Thennadil, Suresh (2011) Extraction of chemical information of suspensions using radiative transfer theory to remove multiple scattering effects : application to a model multicomponent system. Analytical Chemistry, 83 (6). pp. 1931-1937. ISSN 0003-2700

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Abstract

The effectiveness of a scatter correction approach based on decoupling absorption and scattering effects through the use of the radiative transfer theory to invert a suitable set of measurements is studied by considering a model multicomponent suspension. The method was used in conjunction with partial least-squares regression to build calibration models for estimating the concentration of two types of analytes: an absorbing (nonscattering) species and a particulate (absorbing and scattering) species. The performances of the models built by this approach were compared with those obtained by applying empirical scatter correction approaches to diffuse reflectance, diffuse transmittance, and collimated transmittance measurements. It was found that the method provided appreciable improvement in model performance for the prediction of both types of analytes. The study indicates that, as long as the bulk absorption spectra are accurately extracted, no further empirical preprocessing to remove light scattering effects is required.

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  Item type:	Article
  ID code:	34518
  Dates:	Date Event 15 March 2011 Published 22 February 2011 Published Online
  Keywords:	scatter correction, multivariate calibration, near-infrared spectroscopy, multiple scattering, radiative transfer equation, adding-doubling method, Chemistry, Analytical Chemistry
  Subjects:	Science > Chemistry
  Department:	Faculty of Engineering > Chemical and Process Engineering
  Depositing user:	Pure Administrator
  Date deposited:	20 Oct 2011 14:03
  Last modified:	23 Sep 2021 04:05
  URI:	https://strathprints.strath.ac.uk/id/eprint/34518