Journal
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
Volume 14, Issue 2, Pages 254-258Publisher
SOC BRASILEIRA QUIMICA
DOI: 10.1590/S0103-50532003000200011
Keywords
reagent generation; ultrasonic irradiation; free radicals; hydride; chromium oxidation
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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.
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