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Proceedings Paper

Chemometric treatment of multimode laser-induced fluorescence (LIF) data of fuel-spiked soils
Author(s): Mark H. Van Benthem; Ben C. Mitchell; Gregory D. Gillispie; Randy W. St. Germain
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Paper Abstract

Field screening of fuel-contaminated soils using laser- induced fluorescence is a cost effective and timely method of characterizing contaminated sites. Data collected with laser-based screening tools are often extensive and difficult to interpret. Pattern recognition algorithms can be utilized to enable less highly trained personnel to identify contaminants. In this work, fluorescence intensity of various hydrocarbon fuels deposited on various soil types was measured as a function of emission wavelength and decay time, generating wavelength-time matrices. The data were arranged into a three mode array and subjected to trilinear decomposition (TLD). The results of the TLD were then utilized in pattern recognition schemes, specifically, linear discrimination and classification and hierarchical cluster analysis. Classification rates and clustering results indicate that these techniques can be very valuable tools in site characterization.

Paper Details

Date Published: 26 November 1996
PDF: 12 pages
Proc. SPIE 2835, Advanced Technologies for Environmental Monitoring and Remediation, (26 November 1996); doi: 10.1117/12.259770
Show Author Affiliations
Mark H. Van Benthem, Air Force Armstrong Lab. (United States)
Ben C. Mitchell, Eli Lilly and Co. (United States)
Gregory D. Gillispie, Dakota Technologies, Inc. (United States)
Randy W. St. Germain, Dakota Technologies, Inc. (United States)

Published in SPIE Proceedings Vol. 2835:
Advanced Technologies for Environmental Monitoring and Remediation
Tuan Vo-Dinh, Editor(s)

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