Sukhareva T. The application of redox-reactions using species of iodine (I, V, VII) in spectrophotometric analysis

Thesis deals with an analytical application of redox-reactions using species of iodine in spectrophotometric analysis, in particular, for determination of iodides, iodates and periodates in waters and kitchen salt, Cr (VI) in natural waters and ascorbic acid in foods and pharmaceutical forms. The proposed in the work analytical forms for the indirect spectrophotometric determination of Cr (VI) as well as spectrophotometric determination of ascorbic acid based on microextraction of ion associates of triiodide anions with cations of basic dyes are the most sensitive among the methods known in the literature for their spectrophotometric determination. Developed techniques for spectrophotometric determination of total iodine and its forms in natural, drinking and mineral waters, Cr (VI) in natural waters and ascorbic acid in foods and pharmaceutical forms are simple to implement, rapid, more sensitive than standard and alternative spectrophotometric methods and have satisfactory metrological characteristics, and therefore are competitive. They can play an important role in the analytical chemistry of iodine, chromium and ascorbic acid.