APPLICATION OF MULTIVARIATE CURVE RESOLUTION TO VOLTAMMETRIC DATA .1. STUDY OF ZN(II) COMPLEXATION WITH SOME POLYELECTROLYTES

被引：59

作者：

DIAZCRUZ, JM ^{[1
]}

TAULER, R ^{[1
]}

GRABARIC, BS ^{[1
]}

ESTEBAN, M ^{[1
]}

CASASSAS, E ^{[1
]}

机构：

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

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1995年 / 393卷 / 1-2期

关键词：

VOLTAMMETRY; ZINC COMPLEXES; PRINCIPAL COMPONENT ANALYSIS; POLYELECTROLYTES;

D O I：

10.1016/0022-0728(95)04015-G

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Multivariate curve resolution is applied to the study of Zn(II) complexation with anions of polymethacrylic acid and polyacrylic acid in aqueous solution containing 0.01 M KNO3. Data matrices obtained by different electrochemical techniques (normal pulse polarography, reverse pulse polarography, differential pulse polarography and differential pulse anodic stripping voltammetry) and for different ligand deprotonation degrees have been analysed individually and simultaneously by a procedure which consists of using several chemometrical techniques based on factor analysis: principal component analysis, evolving factor analysis and multivariate curve resolution with alternating least-squares optimization. These techniques were used to investigate the number of species present in the systems, their concentration profiles at increasing ligand concentration and their individual voltammograms together with the global (apparent) stability constants K and the ratio of diffusion coefficients of the individual species. The comparison of the results obtained by soft (model free) and hard (model postulated a priori) modelling for the systems investigated is discussed.

引用

页码：7 / 16

页数：10

共 47 条

[21] EVOLUTIONARY SPECTRAL FACTOR-ANALYSIS OF DOPING UNDOPING PROCESSES OF THIN CONDUCTIVE POLYMER-FILMS
KANKARE, J
LUKKARI, J
PAJUNEN, T
AHONEN, J
VISY, C
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1990, 294 (1-2): : 59 - 72
[22] EVOLVING FACTOR-ANALYSIS
KELLER, HR
MASSART, DL
[J]. CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS, 1992, 12 (03) : 209 - 224
[23] LEATHERBARROW RJ, 1987, ENZFITTER MANUAL
[24] Malinowski E. R., 1987, J CHEMOMETR, V1, P33
[25] Malinowski E. R., 1988, J CHEMOMETR, V3, P49
[26] THEORY OF ERROR IN FACTOR-ANALYSIS
MALINOWSKI, ER
[J]. ANALYTICAL CHEMISTRY, 1977, 49 (04) : 606 - 612
[27] DETERMINATION OF NUMBER OF FACTORS AND EXPERIMENTAL ERROR IN A DATA MATRIX
MALINOWSKI, ER
[J]. ANALYTICAL CHEMISTRY, 1977, 49 (04) : 612 - 617
[28] Malinowski ER, 1991, FACTOR ANAL CHEM
[29] MALINOWSKI ER, 1987, ASTM SPEC TECH PUBL, V934, P155
[30] AN ALGORITHM FOR LEAST-SQUARES ESTIMATION OF NONLINEAR PARAMETERS
MARQUARDT, DW
[J]. JOURNAL OF THE SOCIETY FOR INDUSTRIAL AND APPLIED MATHEMATICS, 1963, 11 (02): : 431 - 441

← 1 2 3 4 5 →