Fiber optic sensor system for remote, long-term monitoring of soil and groundwater contamination
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We have developed a fiber-optic chemical sensor technology for the remote monitoring of various votatile solvents. The accuracy, linearity, and sensitivity of the sensor (< 5 ppb by weight by water, determined by comparison with standard gas chromatographic measurements) are sufficient for environmental monitoring of at least trichloroethylene and chloroform. The sensor has been successfully demonstrated in a variety of remediation related activities. We will present design parameters of the sensor and field test results.