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V. M. Ivanov, T. O. Samarina, V. N. Figurovskaya

Investigation of complex formation of nickel(II) with 1-nitroso-2-naphthol-3,6-disulfonic acid optical and chromaticity methods


Optimal conditions of complexation nickel(II) with 1-nitroso-2-naphthol-3,6-disulfonic acid were found by spectrophotometric method. An optimum interval pH formation of a complex 7,28,8 with stoichiometrical ratio Me:R = 12. The five-multiple surplus reagent suffices for quantitative formation of a complex. Molar coefficient of absorption and characteristics of chromaticity of a complex in an interval concentration of nickel (4,0816,35)´105 M are determined. Molar coefficient of absorption is equal (7,52 0,05)´103 (n = 10, P = 0,95), B [(1,830,04)´105] and G [(1,76 0,05)´105] (n = 9, P = 0,95) are the most sensitive functions of chromaticity.
Moscow University Chemistry Bulletin.
2011, Vol. 52, No. 4, P. 285

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