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V. M. Ivanov, V. N. Figurovskaya, Y. I. Shcherbakova

Chromaticity characteristics of chrome (VI) solutions

Abstract

The spectra of absorption of solutions chrome (VI) in the form dichromat-ions (pH 1-5) and chromat-ions (pH 7–9) are investigated. The solutions have maximum of absorption at 360 and 380 nm and molar coefficients extinction 155¸7 and 935¸27 for Cr2O72– and CrO42– accordingly. Are investigated chromaticity of function of this forms chrome (VI) and is shown, that they are higher on 1–1,5 about in comparison with molar coefficients extinction. In all cases the yellowness is maximal.
Key words: dichromat-ions , chromat-ions, optical and chromaticity characteristics.
Moscow University Chemistry Bulletin.
2013, Vol. 54, No. 4, P. 216
   

Copyright (C) Chemistry Dept., Moscow State University, 2002
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