Open AccessComplexation of eriochromcyanine R with aluminum and iron (III) ions in the presence of sufractants
Author(s) -
Artem M. Drachev,
С. А. Денисова,
А. Е. Леснов
Publication year - 2021
Publication title -
vestnik permskogo universiteta. seriâ himiâ
Language(s) - English
Resource type - Journals
ISSN - 2223-1838
DOI - 10.17072/2223-1838-2021-2-114-125
Subject(s) - bathochromic shift , molar absorptivity , chemistry , metal ions in aqueous solution , reagent , metal , ion , absorption (acoustics) , inorganic chemistry , aluminium , absorption spectroscopy , analytical chemistry (journal) , calibration curve , materials science , chromatography , detection limit , organic chemistry , fluorescence , quantum mechanics , optics , composite material , physics
The effect of various types of surfactants on the complexation of aluminum and iron (III) ions with eriochromecyanine R have been studied. According to the light absorption spectra of the dye and complexes with metal ions without surfactants and in the presence of catamine AB, oxyphos B, and syntanol DS-10 at various pH and the concentration of surfactants determined the optimal conditions for complexation have been determined. Oxyphos B has a negative effect on the spectrophotometric characteristics of the complexes. Syntanol DS-10 has practically no effect. The presence of catamine AB causes a bathochromic shift in the maximum of light absorption of the complex, increases the contrast of the photometric reaction and the value of the extinction coefficient. The composition of the complexes in the absence and in the presence of catamine AB has been determined by saturation and isomolar series methods. The presence of catamine AB increases the molar ratio of metal: reagent in the complex from 1: 2 to 1: 3. By Babko's method, conditional stability constants of the complexes have been determined, calibration curves have been constructed, and molar light absorption coefficients have been calculated.