Effects of moisture on the performance of permeation sampling devices
Sampling tubes made of TFE Teflon, FEP Teflon and fluorosilicone rubber have been used to measure SO/sub 2/ concentrations in gases containing up to 21 percent water by volume. Even at the highest water concentrations, the dew point of the sample gas was well below the range in which condensation in the sample line or the gas analyzer could occur; in addition, the SO/sub 2/ permeabilities of the tubes were found to be independent of the chamber gas humidity. These results suggest that the moisture content of a stack gas or a process stream should not affect the performance of a permeation sampling tube, either directly through condensation or indirectly by altering the permeation rate of the gas whose concentration is to be measured.
- Research Organization:
- North Carolina State Univ., Raleigh
- OSTI ID:
- 7196913
- Journal Information:
- Anal. Instrum.; (United States), Journal Name: Anal. Instrum.; (United States) Vol. 12; ISSN AINSB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
47 OTHER INSTRUMENTATION
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
CHALCOGENIDES
ELASTOMERS
ENVIRONMENTAL EFFECTS
FLUIDS
FLUORINATED ALIPHATIC HYDROCARBONS
FLUORINE COMPOUNDS
GASEOUS WASTES
GASES
HALOGEN COMPOUNDS
HALOGENATED ALIPHATIC HYDROCARBONS
LABORATORY EQUIPMENT
MOISTURE
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
OXIDES
OXYGEN COMPOUNDS
PERMEABILITY
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLLUTION
POLYETHYLENES
POLYMERS
POLYOLEFINS
POLYTETRAFLUORETHYLENE
RUBBERS
SAMPLERS
SILICONES
SILOXANES
SPECIFICATIONS
STACKS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TEFLON
WASTES