Selective Voltammetric and Flow-Injection Determination of Guanosine and Adenosine at a Glassy Carbon Electrode Modified with a Ruthenium Hexachlororuthenate Film
- Authors: Shaidarova L.G.1, Gedmina A.V.1, Demina V.D.1, Chelnokova I.A.1, Budnikov H.C.1
-
Affiliations:
- Butlerov Institute of Chemistry
- Issue: Vol 73, No 4 (2018)
- Pages: 390-398
- Section: Articles
- URL: https://journals.rcsi.science/1061-9348/article/view/183010
- DOI: https://doi.org/10.1134/S1061934818040111
- ID: 183010
Cite item
Abstract
An inorganic film of ruthenium hexachlororuthenate (RuRuCl6), deposited on the surface of a glassy carbon electrode, exhibits electrocatalytic activity in the oxidation of purine nucleosides, such as guanosine and adenosine. Appropriate operating conditions are found for fabricating a polymer film on the surface of glassy carbon and for recording the maximum electrocatalytic current for the modified electrode. A method for the selective voltammetric determination of guanosine and adenosine in their simultaneous presence at an electrode modified by a RuRuCl6 film is developed. A procedure is proposed for the amperometric detection of purine nucleosides with this modified electrode under the conditions of flow-injection analysis. The linear dependence of the analytical signal on the concentration of guanosine and adenosine is observed up to 5 × 10–6 M in the stationary mode and up to 5 × 10–7 M in the flow system. The proposed method for the selective determination of guanosine and adenosine was tested in the analysis of human urine.
About the authors
L. G. Shaidarova
Butlerov Institute of Chemistry
Author for correspondence.
Email: larisashaidarova@mail.ru
Russian Federation, Kazan, 420008
A. V. Gedmina
Butlerov Institute of Chemistry
Email: larisashaidarova@mail.ru
Russian Federation, Kazan, 420008
V. D. Demina
Butlerov Institute of Chemistry
Email: larisashaidarova@mail.ru
Russian Federation, Kazan, 420008
I. A. Chelnokova
Butlerov Institute of Chemistry
Email: larisashaidarova@mail.ru
Russian Federation, Kazan, 420008
H. C. Budnikov
Butlerov Institute of Chemistry
Email: larisashaidarova@mail.ru
Russian Federation, Kazan, 420008