Analytical Applications of Reactions ofIron(III) and Hexacyanoferrate(III) with 2,10-Disubstituted Phenothiazines

[摘要] The presented review is devoted to analytical applications of reactions of Fe(III) andK3[Fe(CN)6]with 2,10-disubstituted phenothiazines (PT). It was found that iron(III) and hexacyanoferrate(III) ions in acidic media easily oxidized PT with the formation of colored oxidation products. This property has been exploited for spectrophotometric determination of iron(III) ions and phenothiazines. Some flow-injection procedures of the determination of PT based on the oxidation reaction by means ofthe above-mentioned oxidants have been proposed. In the presented review, the application of 2,10-disubstituted phenothiazines as indicators in complexometric titration of iron(III) as well as procedures of PT determination based on generation of ternary compound in the system Fe(III)-SCN−- PT was also described.

[学科分类] 分析化学