0181716 - UFCH-W 20030150 RIV CH eng J - Článek v odborném periodiku
Zuman, P. - Rozbroj, Dan - Ludvík, Jiří - Aleksić, M. - Camaione, L. - Celik, H.
The Use of Limiting Currents in Determination of the Effect of Viscosity in Electrochemical Experiments Performed in Mixtures of Water with Some Organic Co-Solvents.
Journal of the Electroanalytical Chemistry and Journal of Electroanalytical Chemistry and Interfacial Electrochemistry. Roč. 553, - (2003), s. 135-138. ISSN 0022-0728
Grant CEP: GA ČR GA203/02/0983
Výzkumný záměr: CEZ:AV0Z4040901
Klíčová slova: limiting currents * viscosity * polarography
Kód oboru RIV: CG - Elektrochemie
Impakt faktor: 2.076, rok: 2003

Ratios of limiting diffusion controlled currents recorded in aqueous solutions to those obtained in mixture with water-soluble organic co-solvents yield values of rel1/2. These values can be used for evaluation of electrochemical experiments in such media and for distinguishing currents affected solely by a change in viscosity from those caused by other solvent-solute interactions, e.g. covalent additions. Limiting currents of Cd2+ ions and of 2-hydroxy-1,4-naphthoquinone proved to yield most reliable result, values of rel1/2 obtained with Tl+ ions showed somewhat poorer correlation. The average values of rel1/2 obtained from comparison of limiting currents for mixtures of water with ethanol and acetonitrile are in very good agreement with average values of rel1/2 reported in the literature and in acceptable agreement for mixtures of water with 2-propanol. Nevertheless, the electrochemical data show much smaller standard deviations.
Trvalý link: http://hdl.handle.net/11104/0078246