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About Us Contact Information Product Description TCE Monitoring System Groundwater Sampling System Monitoring Chloroform Chromium (VI) Monitoring System HJ-100 HJ-300 Trichloroethene Optrode Detection System Features Applications Uses Theory of Operation Case Studies North Indian Bend Wash – Superfund Edwards AFB Homestead AFB Signal Time Graphs Signal v Time of Optrode Signal v Time Calibration Curve Instrument Schematic Newsletters Home	FEATURES: Trichloroethene Specific with Specific Reagent Detection and Analysis at Parts Per Billion Concentration in Natural Waters and Soils Analysis Time - 3 to 6 Minutes at Equilibrium System Can Support Alternative Sensors APPLICATIONS INCLUDE: Process Control Automation Field Deployable Instrument Capable of Analyzing Trihalomethanes with Different Reagent USES: Field Screening Monitoring of Treatment Units Real-Time, Long-Term Monitoring of Groundwaters
THEORY OF OPERATION:
			1. A clear reagent is pumped through the optrode. After 20-30 µl of reagent is introduced, the pumping system is deactivated. 2. Trichloroethene diffuses through the permeable Teflon membrane reacts with the reagent. The reaction causes the reagent to turn from clear to red with higher trichloroethene concentrations causing a faster reaction. 3. A pulsed green light introduced into the optrode by a fiber optic is attenuated by the reacting reagent (red) in the optrode. 4. The trichloroethene concentration in the sample is directly proportional to the slope of the signal.
Contact Us 6100 South Maple Avenue • Suite 114 • Tempe, Arizona 85283 (480) 968-5141 voice • (480) 345-7555 fax

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