RESOLUTION OF OVERLAPPING UV-VISIBLE ABSORPTION-BANDS - QUANTITATIVE-ANALYSIS OF TAUTOMERIC EQUILIBRIA

被引：30

作者：

ANTONOV, L ^{[1
]}

STOYANOV, S ^{[1
]}

机构：

[1] HIGHER FORESTRY INST,DEPT CHEM & BIOCHEM,BU-1756 SOFIA,BULGARIA

来源：

ANALYTICA CHIMICA ACTA | 1995年 / 314卷 / 03期

基金：

美国国家科学基金会;

关键词：

UV-VISIBLE SPECTROPHOTOMETRY; TAUTOMERIC EQUILIBRIA; 1-PHENYLAZO-4-NAPHTHOL; CHEMOMETRICS;

D O I：

10.1016/0003-2670(95)00281-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A quantitative approach for the analysis of two-component mixtures with unknown spectra of the pure components, based on resolution of the UV-visible absorption spectra into individual bands is proposed and its reliability is confirmed. The proposed method is applied for the analysis of the tautomeric equilibrium of 1-phenylazo-4-naphthol. The molar parts and individual spectra of both tautomeric forms and tautomeric constant K-t are determined. The proposed general approach could be applied for quantitative analysis of any other two-component equilibria including aggregation, acid-base processes, complex formation, where the absorption spectra of the individual forms cannot be obtained experimentally.

引用

页码：225 / 232

页数：8

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