Prototype Laser Fluorescence/Fiber Optics Groundwater Contaminant Detector

by Wayne A. Chudyk, Tufts Univ, Civil Engineering Dep, Medford, MA, USA,
Michael M. Carrabba, Tufts Univ, Civil Engineering Dep, Medford, MA, USA,
George B. Jarvis, Tufts Univ, Civil Engineering Dep, Medford, MA, USA,
Jonathan E. Kenny, Tufts Univ, Civil Engineering Dep, Medford, MA, USA,



Document Type: Proceeding Paper

Part of: Environmental Engineering

Abstract:

Laboratory testing of a prototype field-portable instrument for in-situ laser fluorescence analysis of groundwater contaminants using fiber optics is discussed. Gasoline, gasoline components, and other aromatic organic contaminants are shown to be detectable at simulated well depths of up to 25m. Compounds examined include phenol, o-cresol, humic acid, xylenes, and toluene. Actual wastes examined include unleaded gasoline, bark leachate, and landfill leachate. Limits of detection are shown to be in the ppb range or lower. The prototype instrument is to be mounted on a self-contained cart and is to be portable by vehicle. Application of results to field testing is discussed, along with possible interferences to the method. (Author abstract. )

Subject Headings: Groundwater pollution | Water pollution | Field tests | Pollutants | Lasers | Water resources | Non-renewable energy

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