A Simple and Novel Electrochemical Sensor Based on Phosphomolybdic-Polypyrrole Film Modified Electrode for Highly Sensitive Detection of Cholic Acid
A Simple and Novel Electrochemical Sensor Based on Phosphomolybdic-Polypyrrole Film Modified Electrode for Highly Sensitive Detection of Cholic Acid作者机构：Institute of Environmental Science Shanxi University Taiyuan Sharnxi 030006 China Department of Chemistry and Chemical Engineering Shanxi University Taiyuan Shanxi 030006 China
出 版 物：《Chinese Journal of Chemistry》 (中国化学（英文版）)
年 卷 期：2016年第34卷第11期
页 面：1177-1182页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 080202[工学-机械电子工程] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 0802[工学-机械工程] 070301[理学-无机化学]
基 金：This work was supported by the Natural Science Foundation of Shanxi Province China (No. 201601D202008) and the Joint Funds of the National Natural Science Foundation of China (No. U 1510103)
主 题：phosphomolybdate polypyprrole cholic acid 0.5 order differential voltammetry
摘 要：A simpe electrochemical sensor for detection of cholic acid （CA） was designed by modifying phosphomolybdate （PMol2） doped polypyrrole （PPy） film on glassy carbon electrode （PMo12-PPy/GCE）. The electrochemical behavior of CA on PMo12-PPy/GCE was investigated by cyclic voltammetry and 0.5 order differential voltammetry. The results indicated that CA had high inhibitory activity toward the peak currents of PMo12-PPy/GCE. The reduction peak currents were linearly related to the logarithmic value of the concentration of CA from 1.0 × 10^- 7 to 1.0 × 10^-3 mol/L with a low detection limit of 1.0 × 10^- 8 mol/L. The developed sensor exhibited excellent sensitivity, selectivity and stability for detection of CA, and it could be successfully applied to detect the level of CA in the urine samples. Moreover, the response mechanism of CA on the PMo12-PPy/GCE was discussed in detail.
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