Low-cost in-soil organic contaminant sensor

Charles E. Brossia; Samuel C. Wu

doi:10.1117/12.24781

1 March 1991 Low-cost in-soil organic contaminant sensor

Charles E. Brossia, Samuel C. Wu

Proceedings Volume 1368, Chemical, Biochemical, and Environmental Fiber Sensors II; (1991) https://doi.org/10.1117/12.24781
Event: SPIE Microelectronic Interconnect and Integrated Processing Symposium, 1990, San Jose, United States

Abstract

The First Omega Group Inc. has developed a low cost optical fiber sensing technique for detecting the presence of oils gasoline organic solvents and other oily contaminants in soils. The sensing means consists of a continuous optical fiber having a portion of its surface specially processed to render it sensitive to the presence of soil contandnants. The processed area of the fiber is positioned within the environment that is at risk of contaniination. Contact by a contaminant with the processed area of the optical fiber changes the attenuation of infrared light through the processed area in a characteristic way and in real time. The change in light attenuation is detected using a conven tional photo detector to provide indication of contamination within the soil.

Citation Download Citation

Charles E. Brossia and Samuel C. Wu "Low-cost in-soil organic contaminant sensor", Proc. SPIE 1368, Chemical, Biochemical, and Environmental Fiber Sensors II, (1 March 1991); https://doi.org/10.1117/12.24781

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