Simultaneous Determination of 3,4-Dihydroxyphenylacetic Acid, Uric Acid and Ascorbic Acid by Poly(L-Arginine)/Multi-Walled Carbon Nanotubes Composite Film

被引：18
作者：
Wu, Zhijiao [1 ]
Zhao, Hong [1 ]
Xue, Ying [1 ]
Li, Xiangjun [1 ]
He, Yujian [1 ]
Yuan, Zhuobin [1 ]
机构：
[1] Chinese Acad Sci, Coll Chem & Chem Engn, Grad Univ, Beijing 100049, Peoples R China
来源：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2011年 / 11卷 / 02期
基金：
中国国家自然科学基金;
关键词：
3,4-Dihydroxyphenylacetic Acid; Ascorbic Acid; Uric Acid; Poly(L-Arginine); MultiWalled Carbon Nanotubes; SELECTIVE DETERMINATION; ELECTROCHEMICAL SENSOR; MODIFIED ELECTRODE; DOPAMINE; OXIDATION; NOREPINEPHRINE; EPINEPHRINE; DOPAC;
D O I：
10.1166/jnn.2011.3081
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The poly(L-Arginine)(PArg)-multiwalled carbon nanotubes (MWCNTs) composite film was used to modify glassy carbon electrode (GCE) to fabricate PArg/MWCNTs/GCE through electropolymerization of L-Arginine on MWCNTs/GCE. The PArg/MWCNTs/GCE exhibited high electro-catalytic activities towards the oxidation of 3,4-dihydroxyphenylacetic acid (DOPAC), uric acid (UA), and ascorbic acid (AA), and could be sensitively used for simultaneous determination of DOPAC, AA, and UA in pH 7.4 phosphate-buffered solution (PBS). The linear ranges were 7 mu M to 2.7 mM for DOPAC, 3 mu M to 1.2 mM for UA, and 70 mu M to 1.4 mM for AA. The detection limits were 1.3 mu M for DOPAC, 0.7 mu M for UA and 20 mu M for AA.
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页码：1013 / 1018
页数：6
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