Application of an evolving factor analysis-based procedure to speciation analysis in the copper(II)-polyuridylic acid system
✍ Scribed by E. Casassas; R. Gargallo; I. Giménez; A. Izquierdo-Ridorsa; R. Tauler
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 837 KB
- Volume
- 283
- Category
- Article
- ISSN
- 0003-2670
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✦ Synopsis
The acid-base. properties and the copper(II)_complexing behaviour of the polynucleotide polyuridylic acid were studied by means of potentiometric, spectrophotometric and electron spin resonance titrations in a working aqueous medium of 0.15 M ionic strength and at 37°C. Spectrophotometric data were treated with an evolving factor analysis-based procedure that allows different sets of speetrometric titrations of the same multi-equilibria system to be analysed simultaneously. A dimeric macromokcular complex species between copper ions and polyuridylic acid was detected in the system and its formation constant was evaluated.