Characteristics of <TEX>${\alpha}$</TEX>-Cyclodextrin Modified Carbon Paste Electrode

Jeon, Young-Guk; 전영국; Kim, Bong-Weon; 김봉원; Kim, Hee-Jung; 김희정; Cho, Young-Dal; 조영달; Chung, Chinkap; 정진갑

오늘 하루 그만보기

P-ISSN1225-0163
E-ISSN2288-8985
SCOPUS, ESCI, KCI

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P-ISSN 1225-0163
E-ISSN 2288-8985

e-Submission

Vol.9, No.3

PubReader Citation

Characteristics of ${\alpha}$-Cyclodextrin Modified Carbon Paste Electrode

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985

1996, v.9 no.3, pp.235-243

Jeon, Young-Guk
Kim, Bong-Weon
Kim, Hee-Jung
Cho, Young-Dal
Chung, Chinkap

Jeon, Y., Kim, B., Kim, H., Cho, Y., & Chung, C. (1996). Characteristics of <TEX>${\alpha}$</TEX>-Cyclodextrin Modified Carbon Paste Electrode. , 9(3), 235-243.

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Abstract

A carbon paste electrode were chemically modified using ${\alpha}$-cyclodextrin. Characteristics of chemically modified carbon paste electrodes were studied on the basis of the inclusion complex formation of ${\alpha}$-cyclodextrin and p-nitrophenol in solution. Cyclic voltammetry and differential pulse voltammetry were used to monitor the efficiency of the chemical modification. When the ${\alpha}$-cyclodextrin and carbon powder ratio of 2 : 1 in weight were used, the reduction peak current of p-nitrophenol was decreased almost completely, whereas those of o-nitrophenol and hydroquinone were not changed much. This result is due to the large difference in the inclusion complex formation constants of p-nitrophenol and the other probes with ${\alpha}$-cyclodextrin. Taking advantage of this difference, we can determine the concentration of o-nitrophenol even in the presence of p-nitrophenol.