Monitoring remediation of trichloroethylene using a chemical fiber optic sensor: Field studies
Field tests of a remote fiber optic chemical sensor have recently been completed. The sensor has measured trace quantities of organohalides in the vadose zone and groundwater. Due to its toxicological importance and accessibility, a specific contaminant monitored was trichloroethylene (TCE). Two elements considered in these field measurements included temperature and carbon dioxide (CO[sub 2]) fluctuations. The effects of these properties on the sensor have been modeled in the lab. These results were used in the final determination of TCE concentration. Department of Energy (DOE) sites where remediation work is in progress provided opportunities for testing the sensor. One test was conducted in the vadose zone over sampling wells at the Savannah River Plant DOE integrated test site. Measurements were made before and several months after remediation procedures were in progress. A series of wells was selected with discretely screened depth intervals. Data were collected over a range of depths. A second set of experiments took place at Lawrence Livermore Site 300, in collaboration with a private company (Purus). Purus is remediating groundwater contaminated with halogenated volatile organic compounds. The sensor was set up to continuously monitor the processed gas stream. Supporting data were provided in this case with side by side gas chromatograph measurements.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6469988
- Report Number(s):
- UCRL-JC-110055; CONF-920851-90; ON: DE93009284
- Resource Relation:
- Conference: Spectrum 92: nuclear and hazardous waste management international topical meeting, Boise, ID (United States), 23-27 Aug 1992
- Country of Publication:
- United States
- Language:
- English
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Monitoring remediation of trichloroethylene using a chemical fiber optic sensor: Field studies
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Related Subjects
47 OTHER INSTRUMENTATION
CHLORINE COMPOUNDS
REMEDIAL ACTION
MEASURING METHODS
ETHYLENE
FIBER OPTICS
FIELD TESTS
GROUND WATER
MEASURING INSTRUMENTS
MONITORING
TRANSFRONTIER POLLUTION
ALKENES
HALOGEN COMPOUNDS
HYDROCARBONS
HYDROGEN COMPOUNDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION
TESTING
WATER
540220* - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)
440800 - Miscellaneous Instrumentation- (1990-)