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Applied Spectroscopy

Applied Spectroscopy

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  • Vol. 46, Iss. 1 — Jan. 1, 1992
  • pp: 28–33

Evolving Factor Analysis for Frequency-Domain Lifetime Resolution of Fluorescence Spectra

David W. Millican and Linda B. McGown

Applied Spectroscopy, Vol. 46, Issue 1, pp. 28-33 (1992)


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Abstract

Evolving factor analysis (EFA) is a new approach to the resolution of individual component spectra on the basis of fluorescence lifetime differences. Phase-resolved fluorescence spectra collected at several excitation modulation frequencies are well suited to EFA resolution because the frequency-response curve of phase-resolved intensity for each lifetime component has a single, unique maximum. Unlike other self-modeling spectral matrix resolution methods, EFA has no fundamental limitation upon the number of components that can be resolved. In this work, the resolution of two-component and three-component mixtures of polycyclic aromatic hydrocarbons is demonstrated.

Citation
David W. Millican and Linda B. McGown, "Evolving Factor Analysis for Frequency-Domain Lifetime Resolution of Fluorescence Spectra," Appl. Spectrosc. 46, 28-33 (1992)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-46-1-28


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