Fiber Optic Spectrochemical Emission Sensors: A Detector For Chlorinated And Fluorinated Compounds

Jeffrey W. Griffin; Bradley S. Matson; Khris B. Olsen; Thomas C. Kiefer; Connor J. Flynn

doi:10.1117/12.963178

13 February 1990 Fiber Optic Spectrochemical Emission Sensors: A Detector For Chlorinated And Fluorinated Compounds

Jeffrey W. Griffin, Bradley S. Matson, Khris B. Olsen, Thomas C. Kiefer, Connor J. Flynn

Proceedings Volume 1172, Chemical, Biochemical, and Environmental Fiber Sensors; (1990) https://doi.org/10.1117/12.963178
Event: OE/FIBERS '89, 1989, Boston, United States

Abstract

Prior work on fiber optic spectrochemical emission sensor (FOSES) concepts1,2 has been extended to the design and fabrication of a prototype fiber optic chemical sensor system for chlorinated compounds. The sensor performs analyte dissociation and atomic excitation via a radio-frequency-excited helium plasma. The device has been configured for field measurements of vadose-zone concentrations of carbon tetrachloride on the Hanford Reservation in southeastern Washington state. Detection and quantification of other atomic species may be achieved by varying the analytical wavelength. The sensor system design incorporates an RF excitation source; a metered, sub-atmospheric pressure helium supply system; an optical detection system; and a fiber optic umbilical to transmit analyte emissions to a central detection/data acquisition system. Sensor system design is summarized as well as performance data relating to detection limits and dynamic range.

Citation Download Citation

Jeffrey W. Griffin, Bradley S. Matson, Khris B. Olsen, Thomas C. Kiefer, and Connor J. Flynn "Fiber Optic Spectrochemical Emission Sensors: A Detector For Chlorinated And Fluorinated Compounds", Proc. SPIE 1172, Chemical, Biochemical, and Environmental Fiber Sensors, (13 February 1990); https://doi.org/10.1117/12.963178

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