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	Electrocatalytic oxidation and simultaneous determination of uric acid and ascorbic acid on the gold nanoparticles-modified glassy carbon electrode
	Hu, Guangzhi1,2; Ma, Yonggen1,2; Guo, Yong1; Shao, Shijun1
刊名	Electrochimica acta
	2008-09-20
卷号	53期号:22页码:6610-6615
关键词	Gold nanoparticles self-assembled electrode Uric acid Ascorbic acid Simultaneous determination Differential pulse voltammetry
ISSN号	0013-4686
DOI	10.1016/j.electacta.2008.04.054
通讯作者	Shao, shijun(shaoguo@lzb.ac.cn)
英文摘要	A new gold nanoparticles-modified electrode (gnp/lc/gce) was fabricated by self-assembling gold nanoparticles to the surface of the l-cysteine-modified glassy carbon electrode. the modified electrode showed an excellent character for electrocatalytic oxidization of uric acid (ua) and ascorbic acid (aa) with a 0.306 v separation of both peaks, while the bare gc electrode only gave an overlapped and broad oxidation peak. the anodic currents of ua and aa on the modified electrode were 6- and 2.5-fold to that of the bare gce, respectively. using differential pulse voltammetry (dpv), a highly selective and simultaneous determination of ua and aa has been explored at the modified electrode. dpv peak currents of ua and aa increased linearly with their concentration at the range of 6.0 x 10(-7) to 8.5 x 10(-4) mol l-1 and 8.0 x 10(-6) to 5.5 x 10(-3) mol l-1, respectively. the proposed method was applied for the detection of ua and aa in human urine with satisfactory result. (c) 2008 elsevier ltd. all rights reserved.
WOS关键词	CHEMICALLY-MODIFIED ELECTRODE ; SELECTIVE VOLTAMMETRIC METHOD ; ELECTROCHEMICAL DETERMINATION ; AMPEROMETRIC DETERMINATION ; COVALENT MODIFICATION ; FILM ; DOPAMINE ; EPINEPHRINE ; PENICILLAMINE ; FABRICATION
WOS研究方向	Electrochemistry
WOS类目	Electrochemistry
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000258009800045
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2392703
专题	中国科学院大学
通讯作者	Shao, Shijun
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Key Lab Nat Med Gansu Prov, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Hu, Guangzhi,Ma, Yonggen,Guo, Yong,et al. Electrocatalytic oxidation and simultaneous determination of uric acid and ascorbic acid on the gold nanoparticles-modified glassy carbon electrode[J]. Electrochimica acta,2008,53(22):6610-6615.
APA	Hu, Guangzhi,Ma, Yonggen,Guo, Yong,&Shao, Shijun.(2008).Electrocatalytic oxidation and simultaneous determination of uric acid and ascorbic acid on the gold nanoparticles-modified glassy carbon electrode.Electrochimica acta,53(22),6610-6615.
MLA	Hu, Guangzhi,et al."Electrocatalytic oxidation and simultaneous determination of uric acid and ascorbic acid on the gold nanoparticles-modified glassy carbon electrode".Electrochimica acta 53.22(2008):6610-6615.

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