Electrochemical behaviors of uric acid, xanthine, and hypoxanthine at polythiophene-chitosan-modified glassy-carbon electrode
Vol. 128 No. 1C (2019), Original Article
Vol. 128 No. 1C (2019)

Electrochemical behaviors of uric acid, xanthine, and hypoxanthine at polythiophene-chitosan-modified glassy-carbon electrode

Original Article
https://doi.org/10.26459/hueuni-jns.v128i1C.5403
Published 2019-11-12
Dang Thi Thanh Nhan
University of Education, Hue University, 34 Le Loi St., Hue, Vietnam
Nguyen Hai Phong
University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
Huynh Thi Linh Phuong
University of Education, Hue University, 34 Le Loi St., Hue, Vietnam
Le Quoc Thang
University of Education, Hue University, 34 Le Loi St., Hue, Vietnam
PDF (Vietnamese)

How to Cite

1.
Nhàn Đặng TT, Phong NH, Phương HTL, Thắng LQ. Electrochemical behaviors of uric acid, xanthine, and hypoxanthine at polythiophene-chitosan-modified glassy-carbon electrode. hueuni-jns [Internet]. 2019Nov.12 [cited 2024Nov.14];128(1C):95-101. Available from: https://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/5403
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Abstract

In this study, polythiophene-chitosan-modified glassy-carbon electrodes were used for the simultaneous determination of xanthine, hypoxanthine, and uric acid by the differential pulse anodic stripping voltammetry method. The electrochemical behaviors of the three analytes on the electrode surfaces were studied through the investigation of the influence of pH and the scanning rate. The results show that the number of electrons and protons involved in the electrode process is equal. An irreversible process takes place on the electrode. The electrochemical processes are adsorption-controlled for hypoxanthine and mixed diffusion/adsorption-controlled for xanthine and uric acid.

https://doi.org/10.26459/hueuni-jns.v128i1C.5403
PDF (Vietnamese)

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