標題: Improving the detection of hydrogen peroxide of screen-printed carbon paste electrodes by modifying with nonionic surfactants
作者: Yuan, Chiun-Jye
Wang, Yen-Chi
Reiko, Ohara
生物科技學系
Department of Biological Science and Technology
關鍵字: Nomonic surfactant;Screen-printed carbon paste electrode;Triton X-100;Tween-20 Electrocatalytic activity
公開日期: 19-Oct-2009
摘要: Nonionic surfactants, such as Triton X-100 and Tween-20, were shown in this study to improve the electroatalytic activity of screen-printed carbon paste electrodes (SPCE) The electrochemical response of SPCE to hydrogen peroxide increased 8-10-fold with the modification of nonionic surfactants. In addition, the glucose biosensors fabricated from nonionic surfactant-modified SPCE exhibited 64-8 6-fold higher response to glucose than that fabricated from unmodified SPCE A concentration effect is proposed for nonionic surfactant to bring neutral reactants to the surface of electrode. Moreover, nonionic surfactant-modified SPCE exhibits a capability of repetitive usage and good reproducibility (R S D < 5%) in the measurement of H(2)O(2) Interestingly, the nonionic surfactant-modified SPCE exhibited an opposite effect to ascorbic acid, a common electroactive agent, which causes interference during clinical diagnosis The differential responses of nonionic surfactant-modified SPCE to H(2)O(2) and ascorbic acid Suggest its potential in the development of biosensors for clinical diagnosis (C) 2009 Elsevier B.V. All rights reserved
URI: http://dx.doi.org/10.1016/j.aca.2009.08.035
http://hdl.handle.net/11536/6560
ISSN: 0003-2670
DOI: 10.1016/j.aca.2009.08.035
期刊: ANALYTICA CHIMICA ACTA
Volume: 653
Issue: 1
起始頁: 71
結束頁: 76
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