Journal of the Brazilian Chemical Society
versión impresa ISSN 0103-5053
versión On-line ISSN 1678-4790
KORN, Mauro et al. Reagent generation assisted by ultrasonic irradiation. J. Braz. Chem. Soc. [online]. 2003, vol.14, n.2, pp.254-258. ISSN 0103-5053. http://dx.doi.org/10.1590/S0103-50532003000200011.
In this work, the potential of reagent generation assisted by ultrasonic irradiation was evaluated for Cr(III) oxidation and arsine formation. Free radical formation by sonolysis of aqueous solutions was evaluated. The sonication of an aqueous solution saturated with CCl4 leads to chlorine radical formation while the irradiation of water in the presence of metallic zinc leads to hydrogen production. The low relative standard deviations of the proposed procedures indicate that the method can be applied for analytical purposes.
Palabras clave : reagent generation; ultrasonic irradiation; free radicals; hydride; chromium oxidation.