Abstract
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.
Highlights
Изучено влияние поверхностно-активных веществ различного типа на комплексообразование ионов алюминия и железа (III) с эриохромцианином R
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
Summary
КОМПЛЕКСООБРАЗОВАНИЕ ЭРИОХРОМЦИАНИНА R С ИОНАМИ АЛЮМИНИЯ И ЖЕЛЕЗА (III) В ПРИСУТСТВИИ ПАВ. Найдены условия количественного извлечения широкого круга ионов металлов с последующим фотометрическим окончанием в системах, использующих ПАВ различного типа: в системах на основе КПАВ (катамина АБ) – свинца с пирогалловым красным и меди с пиридилазонафтолом [13], галлия с пирокатехиновым фиолетовым [14]; на основе НПАВ (синтанола) – кобальта с пиридилазонфтолом [15], алюминия с хромазуролом [16], галлия с пирокатехиновым фиолетовым [17]; на основе НПАВ (неонола) – свинца с сульфарсозеном [18]; на основе АПАВ (оксифоса Б) – кобальта с пиридилазонафтолом [19]. Целью настоящей работы является изучение влияния промышленно выпускаемых ПАВ различной природы: катинного типа – катамина АБ, неионогенного – синтанола ДС-10 и анионного – оксифоса Б на спектрофотометрические характеристики комплексов эриохромцианина R (ЭХЦ) с ионами алюминия и железа (III)
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