APPLICATION OF AN EVOLVING FACTOR ANALYSIS-BASED PROCEDURE TO SPECIATION ANALYSIS IN THE COPPER(II) POLYURIDYLIC ACID SYSTEM

Authors
CASASSAS E GARGALLO R GIMENEZ I IZQUIERDORIDORSA A TAULER R
Citation
E. Casassas et al., APPLICATION OF AN EVOLVING FACTOR ANALYSIS-BASED PROCEDURE TO SPECIATION ANALYSIS IN THE COPPER(II) POLYURIDYLIC ACID SYSTEM, Analytica chimica acta, 283(1), 1993, pp. 538-547
Citations number
21
Categorie Soggetti
Chemistry Analytical
Journal title
Analytica chimica acta → ACNP
ISSN journal
00032670
Volume
283
Issue
1
Year of publication
1993
Pages
538 - 547
Database
ISI
SICI code
0003-2670(1993)283:1<538:AOAEFA>2.0.ZU;2-N
Abstract
The acid-base properties and the copper(II)-complexing behaviour of th e polynucleotide polyuridylic acid were studied by means of potentiome tric, spectrophotometric and electron spin resonance titrations in a w orking aqueous medium of 0.15 M ionic strength and at 37-degrees-C. Sp ectrophotometric data were treated with an evolving factor analysis-ba sed procedure that allows different sets of spectrometric titrations o f the same multi-equilibria system to be analysed simultaneously. A di meric macromolecular complex species between copper(II) ions and polyu ridylic acid was detected in the system and its formation constant was evaluated.