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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.

    Item type: Article
    ID code: 34518
    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
    Related URLs:
      Depositing user: Pure Administrator
      Date Deposited: 20 Oct 2011 15:03
      Last modified: 10 May 2014 02:22
      URI: http://strathprints.strath.ac.uk/id/eprint/34518

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