FIELD MEASUREMENTS OF HYDROGEN SULPHIDE OXIDATION

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Abstract

The rate of production of SO2 from H2S was measured in a series of experiments in a broad, ground-level plume from geothermal vents in New Zealand. The mean rate constant for the reaction was 3.5 ± 1.3 × 10−3 min−1 which produced a mean lifetime for H2S oxidation of 500 ± 240 min. It is likely that the major oxidant of H2S in the atmosphere is the OH radical, but it is also necessary to consider additional unknown mechanisms to fully explain the results.

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