Elimination voltammetry of adenine and cytosine mixtures

L. Trnková, J. Friml, O. Dračka, Bioelectrochemistry 54 (2001) 131–136.

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Journal Article | Published
Author
Trnková, Libuše; Friml, JiríIST Austria ; Dračka, Oldřich
Abstract
The elimination voltammetry with linear scan (EVLS) was used to study adenine and cytosine reduction signals at the mercury electrode. In comparison with the linear scan voltammetry (which provides only one unresolved peak), two elimination functions provide good resolution of individual peaks and significant increase of sensitivity. The first elimination function eliminates the kinetic current (Ik) and conserves the diffusion current (Id). The second elimination function eliminates kinetic and charging currents (Ik and Ic) simultaneously and conserves the diffusion current (Id). Both functions give two well-resolved peaks of adenine and cytosine in a wide concentration range, while the linear sweep voltammetry gives badly resolved peaks due to hydrogen evolution. The best resolution of peaks is observed in acetate buffer at pH 3.8 and the detection limit for both substances is 500 nM. The concentration dependence of EVLS peak heights for one substance at the constant concentration of the other substance is linear. The peak potentials differ in these elimination functions. The difference in EVLS peak potentials gives the possibility to evaluate αna. Elimination voltammetry with linear scan contributes to the resolution of cathodic signals of purine and pyrimidine bases at very negative potentials near supporting electrolyte discharge. Copyright © 2001 Elsevier Science B.V.
Publishing Year
Date Published
2001-11-01
Journal Title
Bioelectrochemistry
Volume
54
Issue
2
Page
131 - 136
IST-REx-ID

Cite this

Trnková L, Friml J, Dračka O. Elimination voltammetry of adenine and cytosine mixtures. Bioelectrochemistry. 2001;54(2):131-136. doi:10.1016/S1567-5394(01)00119-0
Trnková, L., Friml, J., & Dračka, O. (2001). Elimination voltammetry of adenine and cytosine mixtures. Bioelectrochemistry, 54(2), 131–136. https://doi.org/10.1016/S1567-5394(01)00119-0
Trnková, Libuše, Jirí Friml, and Oldřich Dračka. “Elimination Voltammetry of Adenine and Cytosine Mixtures.” Bioelectrochemistry 54, no. 2 (2001): 131–36. https://doi.org/10.1016/S1567-5394(01)00119-0.
L. Trnková, J. Friml, and O. Dračka, “Elimination voltammetry of adenine and cytosine mixtures,” Bioelectrochemistry, vol. 54, no. 2, pp. 131–136, 2001.
Trnková L, Friml J, Dračka O. 2001. Elimination voltammetry of adenine and cytosine mixtures. Bioelectrochemistry. 54(2), 131–136.
Trnková, Libuše, et al. “Elimination Voltammetry of Adenine and Cytosine Mixtures.” Bioelectrochemistry, vol. 54, no. 2, Elsevier, 2001, pp. 131–36, doi:10.1016/S1567-5394(01)00119-0.

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