Fiber-optic sensors for rapid, inexpensive characterization of soil and ground water contamination
The extent and complexity of worldwide environmental contamination are great enough that characterization, remediation, and performance monitoring will be extremely costly and lengthy. Characterization techniques that are rapid, inexpensive, and simple and that do not generate waste are urgently needed. Towards this end LLNL is developing a fiber-optic chemical sensor technology for use in groundwater and vadose-zone monitoring. We use a colorimetric detection technique, based on an irreversible chemical reaction between a specific reagent and the target compound. The accuracy and sensitivity of the sensor (<5 ppb by weight in water, determined by comparison with gas chromatographic standard measurements) are sufficient for environmental monitoring of trichloroethylene (TCE) and chloroform.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 10193090
- Report Number(s):
- UCRL-JC-118432; CONF-941152-1; ON: DE95002471
- Resource Relation:
- Conference: Conference and exposition on petroleum hydrocarbons,Houston, TX (United States),2-4 Nov 1994; Other Information: PBD: Aug 1994
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
47 OTHER INSTRUMENTATION
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CHLORINATED ALIPHATIC HYDROCARBONS
QUANTITATIVE CHEMICAL ANALYSIS
MONITORS
DESIGN
REMEDIAL ACTION
GROUND WATER
CHLOROFORM
FIBER OPTICS
540220
440800
400102
CHEMICALS MONITORING AND TRANSPORT
MISCELLANEOUS INSTRUMENTATION
CHEMICAL AND SPECTRAL PROCEDURES