Chemometric treatment of multimode laser-induced fluorescence (LIF) data of fuel-spiked soils

Mark H. Van Benthem; Ben C. Mitchell; Gregory D. Gillispie; Randy W. St. Germain

doi:10.1117/12.259770

26 November 1996 Chemometric treatment of multimode laser-induced fluorescence (LIF) data of fuel-spiked soils

Mark H. Van Benthem, Ben C. Mitchell, Gregory D. Gillispie, Randy W. St. Germain

Proceedings Volume 2835, Advanced Technologies for Environmental Monitoring and Remediation; (1996) https://doi.org/10.1117/12.259770
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

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.

Citation Download Citation

Mark H. Van Benthem, Ben C. Mitchell, Gregory D. Gillispie, and Randy W. St. Germain "Chemometric treatment of multimode laser-induced fluorescence (LIF) data of fuel-spiked soils", Proc. SPIE 2835, Advanced Technologies for Environmental Monitoring and Remediation, (26 November 1996); https://doi.org/10.1117/12.259770

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