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Coulometric determination of organic compounds. IV. Determination of aminophenoxazinium dyes by titanometric coulometry

V. Stužka and I. Lukáš

Department of Analytical and Organic Chemistry, Faculty of Natural Sciences, Palacký University, 771 46 Olomouc

 

Abstract: Conditions were found for the detn. of aminophenoxazinium dyes by titanometric coulometry at const. current using a glossy Pt electrode to generate Ti(III) ions; the equivalence point was recorded potentiometrically. A suitable carrier electrolyte for the detn. was composed of 0.4M TiCl4, 0.7M HCl, and 2.0M H2SO4. In this electrolyte, >200 μg dye in 50-100 mL could be detd. at a const. current of 0.5 or 1.0 mA, respectively.

Full paper in Portable Document Format: 342a197.pdf

 

Chemical Papers 34 (2) 197–202 (1980)

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