Electrochemical determination of melamine using oligonucleotides modified gold electrodes
文献类型：期刊论文
| 作者 | Cao, Qian1; Zhao, Hong1; Zeng, Lixi1; Wang, Jian1; Wang, Rui2; Qiu, Xiaohui2; He, Yujian1,3 |
| 刊名 | Talanta
 |
| 出版日期 | 2009-12-15 |
| 卷号 | 80期号:2页码:484-488 |
| 关键词 | Oligonucleotides Melamine Differential pulse stripping voltammetry Electrochemical impedance spectrometry |
| ISSN号 | 0039-9140 |
| DOI | 10.1016/j.talanta.2009.07.006 |
| 通讯作者 | Zhao, hong(hongzhao@gucas.ac.cn) |
| 英文摘要 | A novel and simple electrochemical method for determination of melamine is developed based on oligonucleotides film modified gold electrodes. the electrochemical probe of ferricyanide was used to investigate the interactions between oligonucleotides and melamine. results of cyclic voltammetries, differential pulse stripping voltammetries, electrochemical impedance spectrometry and atomic force microscope, proved that melamine might interact with oligonucleotides mainly through electrostatic and hydrogen-bonding interactions. the interactions between oligonucleotides and melamine lead to the increase in the peak currents of ferricyanide, which could be used for electrochemical sensing of melamine. the redox peak currents of ferricyanide were linear with the concentration of melamine in the range from 3.9 x 10(-8) to 3.3 x 10(-6) m with a linear coefficiency of 0.990. the detection limit was 9.6 x 10(-9) m. the proposed electrochemical biosensor is rapid, convenient and low-cost for effective sensing of melamine. particularly, the proposed method was applied successfully to the determination of melamine in milk products, and the recovery was 95%. (c) 2009 elsevier b.v. all rights reserved. |
| WOS关键词 | IMPEDANCE SPECTROSCOPY ; DNA IMMOBILIZATION ; CYANURIC ACID ; SURFACE |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Analytical |
| 语种 | 英语 |
| WOS记录号 | WOS:000271701900012 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2404990 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zhao, Hong |
| 作者单位 | 1.Chinese Acad Sci, Grad Univ, Coll Chem & Chem Engn, Beijing 100049, Peoples R China 2.Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China 3.Peking Univ, State Key Lab Nat & Biomimet Drugs, Beijing 100191, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao, Qian,Zhao, Hong,Zeng, Lixi,et al. Electrochemical determination of melamine using oligonucleotides modified gold electrodes[J]. Talanta,2009,80(2):484-488. |
| APA | Cao, Qian.,Zhao, Hong.,Zeng, Lixi.,Wang, Jian.,Wang, Rui.,...&He, Yujian.(2009).Electrochemical determination of melamine using oligonucleotides modified gold electrodes.Talanta,80(2),484-488. |
| MLA | Cao, Qian,et al."Electrochemical determination of melamine using oligonucleotides modified gold electrodes".Talanta 80.2(2009):484-488. |
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来源：中国科学院大学
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