Multicomponent Quantitative Analysis In Systems Not Obeying Beer's Law; The Use Of Curve Fitting With Multiple Standards

M. A . Ford; R.. A . Spragg

doi:10.1117/12.970772

20 December 1985 Multicomponent Quantitative Analysis In Systems Not Obeying Beer's Law; The Use Of Curve Fitting With Multiple Standards

M. A . Ford, R.. A . Spragg

Author Affiliations +

Proceedings Volume 0553, Fourier and Computerized Infrared Spectroscopy; (1985) https://doi.org/10.1117/12.970772
Event: 1985 International Conference on Fourier and Computerized Infrared Spectroscopy, 1985, Ottawa, Canada

Abstract

Quantitative analysis of multicomponent systems is often hindered by deviations from linear Beer's Law behaviour. Attempts to accommodate non-linearity have generally assumed some explicit relationship between absorbance and concentration,l. An alternative approach is to consider the deviations from Beer's Law as arising from a series of additional spectral components. Such a model has obvious physical significance when there are specific interactions between the components in a mixture, and may prove a useful approximation in any situation. On the basis of this model it will be shown that least squares curve fitting can give accurate quantitative results even when there are gross deviations from Beer's Law.

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M. A . Ford and R.. A . Spragg "Multicomponent Quantitative Analysis In Systems Not Obeying Beer's Law; The Use Of Curve Fitting With Multiple Standards", Proc. SPIE 0553, Fourier and Computerized Infrared Spectroscopy, (20 December 1985); https://doi.org/10.1117/12.970772

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