Issue 5, 1984
From the journal:

Analyst

On-line oxidation of Cr(III) to Cr(VI) for use with the flow injection analysis technique

João Carlos de Andrade,   Julio Cesar Rocha  and  Nivaldo Baccan  

Abstract

An on-line procedure for the oxidation of Cr(III) to Cr(VI) was developed. The extent of oxidation was followed using the 1,5-diphenylcarbazide (DPC) spectrophotometric method accommodated in a flow injection analysis (FIA) system. Cerium(IV) sulphate and potassium peroxydisulphate were tested as oxidising agents. Despite the high oxidation power of the peroxydisulphate ion in acidic solution, the use of Ce(IV) is more convenient under dynamic conditions. The best experimental conditions were obtained at 45 °C using a 0.025%m/V Ce(IV) solution in 0.07 M H2SO4 with the Cr(III) solutions containing up to 3.0 × 10–2M H2SO4.

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Article information

DOI
https://doi.org/10.1039/AN9840900645
Article type
Paper

Analyst, 1984,109, 645-647

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On-line oxidation of Cr(III) to Cr(VI) for use with the flow injection analysis technique

J. C. de Andrade, J. C. Rocha and N. Baccan, Analyst, 1984, 109, 645 DOI: 10.1039/AN9840900645

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