Development of purge and trap with whole-column cryotrapping for the analysis of ground water contaminated with organic compounds. Final report
Technical Report
·
OSTI ID:7067997
A method has been developed for the determination of volatile organic compounds in water. It involves the direct purging of a sample to a fused silica capillary column. As they are purged, the compounds are focused on a DB-624 column using whole-column cryotrapping (WCC). WCC at -90 to -80 C traps all of the purgeable priority pollutant compounds. After purging, the gas chromatography run is started immediately. The purge and whole column cryo-trapping (P/WCC) method is facilitated by the fact that water is relatively non-volatile. Advantages of P/WCC include: simplicity and therefore high reliability; low background contamination since no sorbent traps or multiport valves are needed; no need to retain very volatile compounds on an intermediate trap as in purge and trap; and very short run times.
- Research Organization:
- Oregon Graduate Center, Beaverton, OR (USA). Dept. of Environmental Science and Engineering
- OSTI ID:
- 7067997
- Report Number(s):
- PB-90-159245/XAB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
CHEMICAL ANALYSIS
CHEMICAL EFFLUENTS
CHROMATOGRAPHY
COLUMN PACKING
DOCUMENT TYPES
GAS CHROMATOGRAPHY
GROUND WATER
HYDROGEN COMPOUNDS
MASS SPECTROSCOPY
MATTER
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PACKINGS
POLLUTION
PROGRESS REPORT
RELIABILITY
SEPARATION PROCESSES
SPECTROSCOPY
VOLATILE MATTER
WATER
WATER POLLUTION
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
CHEMICAL ANALYSIS
CHEMICAL EFFLUENTS
CHROMATOGRAPHY
COLUMN PACKING
DOCUMENT TYPES
GAS CHROMATOGRAPHY
GROUND WATER
HYDROGEN COMPOUNDS
MASS SPECTROSCOPY
MATTER
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PACKINGS
POLLUTION
PROGRESS REPORT
RELIABILITY
SEPARATION PROCESSES
SPECTROSCOPY
VOLATILE MATTER
WATER
WATER POLLUTION