Quantification of Overlapping VIS-Absorption Bands by Fourier-Domain Fitting of a Generalized Band Shape Function
- 1 February 1990
- journal article
- research article
- Published by SAGE Publications in Applied Spectroscopy
- Vol. 44 (2) , 313-317
- https://doi.org/10.1366/0003702904085435
Abstract
Parameter estimation of overlapping (near-)symmetrical absorption bands with reference to quantitative determination may advantageously be performed by a new procedure that involves fitting a generalized four-parameter band shape function to the Fourier-domain representation of the second-derivative spectrum. Important features of the method are: insensitivity to linear and weakly curved baselines, inherent noise reduction, fast calculation of objective function, and band simulation capability much better than that with the Gauss or Lorentz shapes.Keywords
This publication has 19 references indexed in Scilit:
- The Widespread Applicability of Lognormal Curves for the Description of Absorption SpectraApplied Spectroscopy, 1985
- Analysis of optical spectra by Fourier methods: filtering and least-squares regression in reciprocal spaceJournal of the Optical Society of America, 1983
- Linear parameter estimation of fused peak systems in the spatial frequency domainAnalytical Chemistry, 1980
- The Scope and Limitations of Curve FittingApplied Spectroscopy, 1980
- Deconvolution method for identification of peaks in digitized spectraAnalytical Chemistry, 1973
- Determination of subnanogram quantities of silver in snow by furnace atomic absorption spectrometryAnalytical Chemistry, 1973
- Fast Fourier transforms without sortingIEEE Transactions on Audio and Electroacoustics, 1969
- Resolution of overlapping bands. Functions for simulating band shapesAnalytical Chemistry, 1969
- Damped Least-Squares Method for Automatic Lens DesignJournal of the Optical Society of America, 1965
- Function minimization by conjugate gradientsThe Computer Journal, 1964