caa a22 4500 463219325 CHVBK 20180405153207.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1134/S1061934807120052 doi (NATIONALLICENCE)springer-10.1134/S1061934807120052 Chromaticity characteristics of two-and three-component vanadium(IV, V) 4-(2-pyridylazo)resorcinolates [Elektronische Daten] [V. Ivanov, A. Mamedova, V. Figurovskaya] The optimum conditions of the complexation of vanadium(IV, V) with 4-(2-pyridylazo)resorcinol without and with hydrogen peroxide or hydroxylamine were found, and chemical analytical characteristics of the complexes were determined. Molar coefficients of chromaticity functions were calculated. It was demonstrated that they depend on the oxidation number of vanadium in the complex; this fact confirms the expected difference in the oxidation number of the central ion, which was found in the determination of optical characteristics. Coefficients of equations and linearity boundaries of the calibration dependences of optical and chromaticity characteristics of the complexes on the concentration of the central ion were calculated. The higher sensitivity of chromaticity measurements in comparison with spectrophotometry was demonstrated. Pleiades Publishing, Ltd., 2007 Ivanov V. Department of Chemistry, Moscow State University, 119992, Vorob'evy gory, Moscow, Russia aut Mamedova A. Department of Chemistry, Moscow State University, 119992, Vorob'evy gory, Moscow, Russia aut Figurovskaya V. Department of Chemistry, Moscow State University, 119992, Vorob'evy gory, Moscow, Russia aut Journal of Analytical Chemistry Nauka/Interperiodica 62/12(2007-12-01), 1131-1135 1061-9348 62:12<1131 2007 62 10809 https://doi.org/10.1134/S1061934807120052 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1061934807120052 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ivanov V. Department of Chemistry, Moscow State University, 119992, Vorob'evy gory, Moscow, Russia aut NATIONALLICENCE 700 1- Mamedova A. Department of Chemistry, Moscow State University, 119992, Vorob'evy gory, Moscow, Russia aut NATIONALLICENCE 700 1- Figurovskaya V. Department of Chemistry, Moscow State University, 119992, Vorob'evy gory, Moscow, Russia aut NATIONALLICENCE 773 0- Journal of Analytical Chemistry Nauka/Interperiodica 62/12(2007-12-01), 1131-1135 1061-9348 62:12<1131 2007 62 10809 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer