共 24 条
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
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Chinese Acad Sci, Coll Chem & Chem Engn, Grad Univ, Beijing 100049, Peoples R China Chinese Acad Sci, Coll Chem & Chem Engn, Grad Univ, Beijing 100049, Peoples R China

Zhao, Hong
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Chinese Acad Sci, Coll Chem & Chem Engn, Grad Univ, Beijing 100049, Peoples R China Chinese Acad Sci, Coll Chem & Chem Engn, Grad Univ, Beijing 100049, Peoples R China

Xue, Ying
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Chinese Acad Sci, Coll Chem & Chem Engn, Grad Univ, Beijing 100049, Peoples R China Chinese Acad Sci, Coll Chem & Chem Engn, Grad Univ, Beijing 100049, Peoples R China

Li, Xiangjun
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Chinese Acad Sci, Coll Chem & Chem Engn, Grad Univ, Beijing 100049, Peoples R China Chinese Acad Sci, Coll Chem & Chem Engn, Grad Univ, Beijing 100049, Peoples R China

He, Yujian
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Chinese Acad Sci, Coll Chem & Chem Engn, Grad Univ, Beijing 100049, Peoples R China Chinese Acad Sci, Coll Chem & Chem Engn, Grad Univ, Beijing 100049, Peoples R China

Yuan, Zhuobin
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Chinese Acad Sci, Coll Chem & Chem Engn, Grad Univ, Beijing 100049, Peoples R China Chinese Acad Sci, Coll Chem & Chem Engn, Grad Univ, Beijing 100049, Peoples R China
机构:
[1] Chinese Acad Sci, Coll Chem & Chem Engn, Grad Univ, Beijing 100049, Peoples R China
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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