A Comparison of Continuous H2S Analyzers for the Measurement of Low Concentrations of H2S in the Vicinity of Geothermal Power Plants
- Key words
- Environmental; Power Generation; USA; Air Pollution; Case Studies; Mitigation; Comparative Evaluations; Monitoring; Laboratory Tests; Field Tests
- Conference
- Geothermal Resources Council Transactions
- Year
- 1991
- Session
- Air quality; Hydrogen sulfide
- Language
- English
Abstract
Hydrogen sulfide (H2S) gas emitted in the vicinity of power generation facilities in geothermal resource areas has a noticeable and distinctive odor at concentrations as low as a few parts per billion. These low concentrations, while apparently not hazardous to health, can by annoying to people and often lead to odor complaints. Three continuous H2S analyzer capable of measuring low levels of H2S have been tested for their response to clean air and H2S concentrations in the range of 4 to 40 ppb. Tests included measurements of the instruments long term stability and short term noise, time to reach equilibrium after exposure to constant H2S and to clean air and integrated response to exposure to constant H2S of short duration. Two of the analyzers have been deployed near a geothermal power plant to monitor ambient levels of H2S.
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