SPECTROSCOPIC RESOLUTION OF MACROMOLECULAR COMPLEXES USING FACTOR-ANALYSIS - CU(II)-POLYETHYLENEIMINE SYSTEM

被引：49

作者：

TAULER, R ^{[1
]}

CASASSAS, E ^{[1
]}

机构：

[1] UNIV BARCELONA,DEPT ANALYT CHEM,DIAGONAL 647,E-08028 BARCELONA,SPAIN

来源：

CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS | 1992年 / 14卷 / 1-3期

关键词：

D O I：

10.1016/0169-7439(92)80114-J

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The complexes of Cu(II) ion with polyethyleneimine formed during a VIS spectroscopic titration of solutions containing different amounts of Cu(II) and polyethyleneimine at various pH values have been studied using a new self-resolving approach based on different factor analysis techniques, including evolving factor analysis, error in factor analysis, cross-validation, target factor analysis, and rank annihilation. Three different macromolecular complex species between Cu(II) and polyethyleneimine were detected in the system, and their concentration profiles and individual spectra were estimated without any previous knowledge of the underlying chemical model (set of stoichiometric coefficients and set of stability constants). The method developed is proposed for use in the deduction of the metal complexing properties of macromolecular systems.

引用

页码：305 / 317

页数：13

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