Home • Signal v Time of Optrode • Signal v Time • Calibration Curve • Instrument Schematic
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	SIGNAL TIME GRAPHS: SIGNAL vs TIME OF TCE OPTRODE: The TCE optrode operation begins with the activation of the pulsed green light (source) and the purging of optrode by the reagent pump. After the purging cycle, the reagent in the optrode reacts with the trichloroethene permeating through the Teflon membrane. The reacting reagent attenuates the pulsed green light. The signal slope (rate of reaction) is directly proportional to the trichloroethene concentration.
SIGNAL vs TIME: This figure illustrates the sensitivity of the optrode. The differences in the slopes of the reactions illustrates the sensitivity at various trichloroethene concentrations.			CALIBRATION CURVE: A calibration curve of measured slopes versus trichloroethene concentrations in water results in a linear plot from 5 ppb to 200 ppb.
INSTRUMENT SCHEMATIC: The battery operated, field portable instrument is capable of operating in the laboratory or in the field to measure trichloroethene concentrations in natural waters and soils. Analysis of 100 samples is possible with 30 mls of reagent. The battery operated, field portable instrument is capable of operating in the laboratory or in the field to measure trichloroethene concentrations in natural waters and soils. Analysis of 100 samples is possible with 30 mls of reagent.
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