In 1933, Flosdorf and Chambers (1) reported that metal were oxidized in the presence of audible sound (1-15 kHz) while investigating the bactericidal action of sound. However, Schmitt et al. (2) were the first to observe the rapid oxidation of dissolved H_2S gas to colloidal sulfur during sonication at 750 kHz with a 250-W power source. They reported that an increase in total pressure of the system (PO_2) led to higher oxidation rates up to a limiting pressure.
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Κοτρωνάρου et al. (1992) studied this question.