Published 2006

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Publication details

Journal : Applied Spectroscopy , vol. 60 , p. 315–321–7 , 2006

International Standard Numbers :
Printed : 0003-7028
Electronic : 1943-3530

Publication type : Academic article

Contributors : Thennadil, SN; Martens, Harald; Kohler, Achim

Issue : 3

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Kjetil Aune
Chief Librarian


Light scattering effects pose a major problem in the estimation of chemical properties of particulate systems such as blood, tissue, and pharmaceutical solids. Recently, Martens et al. proposed ail extended multiplicative signal correction (EMSC) approach where light-scattering effects were taken into account in an empirical manner. It is possible to include causal, first-principles mathematical models based on the physics of light scattering into the EMSC framework. This could lead to significant improvements in the separation of absorption and scattering effects. A preconditioning step prior to application of EMSC, whereby a transformation based on the physics of light scattering is used to convert the spectra into a form where the absorption and scattering effects are separable (an underlying assumption of EMSC), is proposed. Results indicate that the transformation followed by EMSC gives better calibration models than the direct application of EMSC to the absorbance spectra.