Chemometric Analysis of Multimode Fluorescence Data Obtained with a Pulsed Tunable Laser.

Abstract

This research evaluated the capabilities of various chemometric methods for analysis of three-mode fluorescence data. Data were collected using pulsed Nd:YAG laser and pulsed Nd:YAG laser-pumped dye laser excitation and monochromator-PMT-digital oscilloscope detection. This apparatus produced data in the form of nanosecond scale time decay profiles at numerous emission wavelengths generating a wavelength-time matrix (WTM). Third-order data were produced by varying analyte concentrations or changing excitation wavelength to produce a time-resolved excitation-emission matrix (TREEM). Trilinear decomposition (TLD) and global analysis methods were applied to a WTM-concentration 3-array and a TREEM. TLD methods and linear discriminant analysis and classification were performed on highiy complicated data in the form of WTMs of various fuels. The three-mode data were decomposed with an eigenanalysis-based procedure (EBP); three-mode alternating least squares (3M-ALS), also known as PARAFAC; and three-mode nonnegative alternating least squares (3M-NNALS). p4

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1995
Accession Number
ADA311697

Entities

People

  • Mark H. Van Benthem

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Biomedical
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Chemical Analysis
  • Chemical Synthesis
  • Chemistry
  • Complex Mixtures
  • Computational Science
  • Computations
  • Data Analysis
  • Data Mining
  • Databases
  • Factor Analysis
  • Information Processing
  • Information Science
  • Lasers
  • Measurement
  • Pattern Recognition
  • Spectroscopy

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Neurological Diseases/Conditions/Disorders
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers