Amperometric Sensor Used for Determination of Thiocyanate with a Silver Nanoparticles Modified Electrode

A novel electrode modified with silver nanoparticles was fabricated. It is found that the reducibility of silver nanoparticles is higher than for bulk silver by comparing a silver nanoparticles modified electrode with a silver micro-disk electrode. When SCN(-) was added, a new oxidation peak occurre...

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Autores principales: Wang, Guang-Feng, Li, Mao-Guo, Gao, Ying-Chun, Fang, Bin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2004
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4008873/
http://dx.doi.org/10.3390/s040900147
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author Wang, Guang-Feng
Li, Mao-Guo
Gao, Ying-Chun
Fang, Bin
author_facet Wang, Guang-Feng
Li, Mao-Guo
Gao, Ying-Chun
Fang, Bin
author_sort Wang, Guang-Feng
collection PubMed
description A novel electrode modified with silver nanoparticles was fabricated. It is found that the reducibility of silver nanoparticles is higher than for bulk silver by comparing a silver nanoparticles modified electrode with a silver micro-disk electrode. When SCN(-) was added, a new oxidation peak occurred and the anodic peak current of silver nanoparticles decreased. The new anodic peak current is proportional to the thiocyanate concentration in the range of 5.0×10(-7)∼4.0×10(-4) mol/L in pH 6.0 NaH(2)PO(4)-Na(2)HPO(4) buffer solutions (PBS). The detection limit (S/N=3) is 4×10(-8) mol/L. This method has been applied to the determination of saliva (smoker and non-smoker).
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spelling pubmed-40088732014-05-05 Amperometric Sensor Used for Determination of Thiocyanate with a Silver Nanoparticles Modified Electrode Wang, Guang-Feng Li, Mao-Guo Gao, Ying-Chun Fang, Bin Sensors (Basel) Article A novel electrode modified with silver nanoparticles was fabricated. It is found that the reducibility of silver nanoparticles is higher than for bulk silver by comparing a silver nanoparticles modified electrode with a silver micro-disk electrode. When SCN(-) was added, a new oxidation peak occurred and the anodic peak current of silver nanoparticles decreased. The new anodic peak current is proportional to the thiocyanate concentration in the range of 5.0×10(-7)∼4.0×10(-4) mol/L in pH 6.0 NaH(2)PO(4)-Na(2)HPO(4) buffer solutions (PBS). The detection limit (S/N=3) is 4×10(-8) mol/L. This method has been applied to the determination of saliva (smoker and non-smoker). Molecular Diversity Preservation International (MDPI) 2004-10-01 /pmc/articles/PMC4008873/ http://dx.doi.org/10.3390/s040900147 Text en © 2004 by MDPI (http://www.mdpi.net). Reproduction is permitted for non-commercial purposes.
spellingShingle Article
Wang, Guang-Feng
Li, Mao-Guo
Gao, Ying-Chun
Fang, Bin
Amperometric Sensor Used for Determination of Thiocyanate with a Silver Nanoparticles Modified Electrode
title Amperometric Sensor Used for Determination of Thiocyanate with a Silver Nanoparticles Modified Electrode
title_full Amperometric Sensor Used for Determination of Thiocyanate with a Silver Nanoparticles Modified Electrode
title_fullStr Amperometric Sensor Used for Determination of Thiocyanate with a Silver Nanoparticles Modified Electrode
title_full_unstemmed Amperometric Sensor Used for Determination of Thiocyanate with a Silver Nanoparticles Modified Electrode
title_short Amperometric Sensor Used for Determination of Thiocyanate with a Silver Nanoparticles Modified Electrode
title_sort amperometric sensor used for determination of thiocyanate with a silver nanoparticles modified electrode
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4008873/
http://dx.doi.org/10.3390/s040900147
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AT gaoyingchun amperometricsensorusedfordeterminationofthiocyanatewithasilvernanoparticlesmodifiedelectrode
AT fangbin amperometricsensorusedfordeterminationofthiocyanatewithasilvernanoparticlesmodifiedelectrode

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