DNA-Modified Electrodes. Part 5. Electrochemical Behavior of Co2+ at DNA-Modified Gold Electrodes in the Presence of 2,2′-Bipyridyl

• PANG Dai-Wen

  Department of Chemistry, Wuhan University

• ZHAO Yuan-Di

  Department of Chemistry, Wuhan University

• ZHANG Min

  Department of Chemistry, Wuhan University

• QI Yi-Peng

  Institute of Virology, Wuhan University

• WANG Zong-Li

  Department of Chemistry, Wuhan University

• CHENG Jie-Ke

  Department of Chemistry, Wuhan University

書誌事項

タイトル別名

• DNA-Modified Electrodes. Part 5. Electrochemical Behavior of Co2+ at DNA-Modified Gold Electrodes in the Presence of 2,2'-Bipyridyl.

抄録

The electrochemical behavior of Co²⁺, whose response is abnormally enhanced at DNA-modified gold electrodes in the presence of 2,2′-bipyridyl, was found. After it forms an adduct with Co²⁺, excess 2,2′-bipyridyl can enhance the electro-chemical response of this adduct at DNA-modified gold electrodes by synergism. ssDNA-modified gold electrodes that are highly sensitive to Co²⁺ were utilized to determine trace Co²⁺ in the presence of 2,2′-bipyridyl by cyclic voltammetry. It was found that the peak currents for cobalt increase linearly over the concentration range of 1.0×10^-7 - 1.1×10^-6 mol/l with a detection limit of 4.0×10^-8 mol/l. For seven preconcentration/voltammetric detection/renewal cyclic experiments with 1.0×10^-7 mol/l and 1.0×10^-6 mol/l Co²⁺ solutions, relative standard deviations of 2.7% and 1.9% were found, respectively, indicating that the DNA-modified gold electrodes were stable and repeatable.

収録刊行物

• Analytical Sciences

  Analytical Sciences 15 (5), 471-475, 1999

  社団法人 日本分析化学会

キーワード

• Analytical Chemistry

詳細情報

• CRID: 1390282679229971328
• NII論文ID: 130004440054
• NII論文ID: 10002419790
• NII書誌ID: AA10500785
• DOI: 10.2116/analsci.15.471
• COI: 1:CAS:528:DyaK1MXjtFeqtb8%3D
• ISSN: 13482246
• ISSN: 09106340
• NDL書誌ID: 4721915
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4721915
• Web Site: https://link.springer.com/content/pdf/10.2116/analsci.15.471.pdf
• Web Site: https://link.springer.com/article/10.2116/analsci.15.471/fulltext.html
• Web Site: http://www.jstage.jst.go.jp/article/analsci/15/5/15_5_471/_pdf
• 本文言語コード: en
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