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Proceedings Paper

Preliminary field demonstration of a fiber optic trichloroethylene sensor
Author(s): S. Michael Angel; Kevin C. Langry; Jeffrey N. Roe; Bill W. Colston; Paul F. Daley; Fred P. Milanovich
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Paper Abstract

We have developed a differential-absorption fiber-optic sensor for use in groundwater and vadose zone monitoring of certain volatile organochiorides. The principle of detection is a quantitative irreversible chemical reaction that forms visible light-absorbing products. The sensor has been evaluated against gas chromatographic (GC) standard measurements and has demonstrated accuracy and sensitivity sufficient for the environmental monitoring of trace levels of trichioroethylene (TCE) and chloroform. This sensor is currently under evaluation in monitoring well and vadose zone applications. In this paper we describe the principles of the existing single measurement sensor technology and show preliminary field test results.

Paper Details

Date Published: 1 March 1991
PDF: 7 pages
Proc. SPIE 1368, Chemical, Biochemical, and Environmental Fiber Sensors II, (1 March 1991); doi: 10.1117/12.24802
Show Author Affiliations
S. Michael Angel, Lawrence Livermore National Lab. (United States)
Kevin C. Langry, Lawrence Livermore National Lab. (United States)
Jeffrey N. Roe, Lawrence Livermore National Lab. (United States)
Bill W. Colston, Lawrence Livermore National Lab. (United States)
Paul F. Daley, Lawrence Livermore National Lab. (United States)
Fred P. Milanovich, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 1368:
Chemical, Biochemical, and Environmental Fiber Sensors II
Robert A. Lieberman; Marek T. Wlodarczyk, Editor(s)

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