Published December 2007 | Version v1
Journal article Metadata-only

Chromaticity characteristics of two- and three-component vanadium(IV, V) 4-(2-pyridylazo)resorcinolates

Creators

  • 1. Moskovskij Gosudarstvennyj Univ. im. M.V. Lomonosova, Khimicheskij Fakul'tet, Moscow (Russian Federation)

Description

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

Abstract (Russian)

Найдены оптимальные условия комплексообразования ванадия(IV, V) с 4-(2-пиридилазо)резорцином в отсутствие и в присутствии пероксида водорода или гидроксиламина и определены химико-аналитические характеристики комплексов. Рассчитаны молярные коэффициенты цветометрических функций, показано, что они зависят от степени окисления ванадия в комплексе, что подтверждает предполагаемое различие в степени окисления центрального иона, обнаруженное при определении оптических характеристик. Вычислены коэффициенты уравнений и границы линейности градуировочных зависимостей оптических и цветометрических характеристик комплексов от концентрации центрального иона. Показана более высокая чувствительность цветометрии по сравнению со спектрофотометрией

Additional details

Additional titles

Original title (Russian)
Цветометрические характеристики двух- и трехкомпонентных 4-(2-пиридилазо)резорцинатов ванадия(IV, V)

Publishing Information

Journal Title
Zhurnal Analiticheskoj Khimii
Journal Volume
62
Journal Issue
12
Journal Page Range
p. 1254-1258
ISSN
0044-4502
CODEN
ZAKHA8

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
39094935
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ABSORPTION SPECTRA; ADDITIVES; AQUEOUS SOLUTIONS; CHEMICAL COMPOSITION; COLOR; CONCENTRATION RATIO; HYDROCHLORIC ACID; HYDROGEN PEROXIDE; HYDROXYLAMINE; OPACITY; PH VALUE; PYRIDYLAZORESORCINOL; QUANTITATIVE CHEMICAL ANALYSIS; VALENCE; VANADIUM COMPLEXES
Descriptors DEC
AMINES; AROMATICS; AZINES; CHEMICAL ANALYSIS; CHLORINE COMPOUNDS; COMPLEXES; DIAZO COMPOUNDS; DIMENSIONLESS NUMBERS; DISPERSIONS; HALOGEN COMPOUNDS; HETEROCYCLIC COMPOUNDS; HOMOGENEOUS MIXTURES; HYDROGEN COMPOUNDS; HYDROXY COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; MIXTURES; OPTICAL PROPERTIES; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; ORGANOLEPTIC PROPERTIES; OXYGEN COMPOUNDS; PEROXIDES; PHENOLS; PHYSICAL PROPERTIES; POLYPHENOLS; PYRIDINES; REAGENTS; SOLUTIONS; SPECTRA; TRANSITION ELEMENT COMPLEXES

Optional Information

Notes
9 refs., 4 figs., 3 tabs.