| Preparation of novel mercury-doped silver nanoparticles film glassy carbon electrode and its application for electrochemical biosensor. | |
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MedLine Citation:
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PMID: 15866527 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A novel mercury-doped silver nanoparticles film glassy carbon (Ag/MFGC) electrode was prepared in this study. Electrochemical behaviors of cysteine on the Ag/MFGC electrode were investigated by electrochemical impedance spectroscopy and cyclic voltammetry (CV). The results indicated that cysteine could be strongly adsorbed on the surface of the Ag/MFGC electrode to form a thin layer. The doped electrode could catalyze the electrode reaction process of cysteine, and the cysteine displayed a pair of well-defined and nearly reversible CV peaks at the electrode in an acetate buffer solution (pH 5.0). The Ag/MFGC electrode was used for determination of cysteine by differential pulse voltammetry. The linear range was between 4.0x10(-7) and 1.3x10(-5) mol/L, with a detection limit of 1.0x10(-7) mol/L and a signal-to-noise ratio of 3. The relative standard deviation was 2.4% for seven successive determinations of 1.0x10(-5) mol/L cysteine. The determinations of cysteine in synthetic samples and urinal samples were carried out and satisfactory results were obtained. Amperometric application of the Ag/MFGC electrode as biosensors is proposed. |
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Authors:
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Mao-Guo Li; Yong-Jia Shang; Ying-Chun Gao; Guang-Feng Wang; Bin Fang |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Analytical biochemistry Volume: 341 ISSN: 0003-2697 ISO Abbreviation: Anal. Biochem. Publication Date: 2005 Jun |
Date Detail:
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Created Date: 2005-05-03 Completed Date: 2006-07-14 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0370535 Medline TA: Anal Biochem Country: United States |
Other Details:
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Languages: eng Pagination: 52-7 Citation Subset: IM |
Affiliation:
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School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, People's Republic of China. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adsorption Biosensing Techniques* / instrumentation, methods Carbon* Cysteine / chemistry Electrochemistry / instrumentation, methods Electrodes Mercury* Nanostructures* Silver* |
| Chemical | |
Reg. No./Substance:
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52-90-4/Cysteine; 7439-97-6/Mercury; 7440-22-4/Silver; 7440-44-0/Carbon |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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