Practical and regenerable electrochemical aptasensor based on nanoporous gold and thymine-Hg²⁺-thymine base pairs for Hg²⁺ detection

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• 作者：Guangming Zeng^a ; ^b ; ^{zgming@hnu.edu.cn} ; Chen Zhang^a ; ^b ; Danlian Huang^a ; ^b ; ^{huangdanlian@hnu.edu.cn} ; Cui Lai^a ; ^b ; Lin Tang^a ; ^b ; Yaoyu Zhou^a ; ^b ; ^c ; Piao Xu^a ; ^b ; Hou Wang^a ; ^b ; Lei Qin^a ; ^b ; Min Cheng^a ; ^b
• 关键词：Hg2+ ; Nanoporous gold ; Electrochemistry ; Thymine-Hg2+-thymine ; Amplification
• 刊名：Biosensors and Bioelectronics
• 出版年：2017
• 出版时间：15 April 2017
• 年：2017
• 卷：90
• 期：Complete
• 页码：542-548
• 全文大小：785 K
• 卷排序：90

文摘

Nanoporous gold was used to fabricate the electrochemical aptasensor. The enhancement of active surface was 9.4-fold by modification of nanoporous gold. A low detection limit of 0.0036 nM was obtained for Hg2+ detection. The electrochemical aptasensor could be easily regenerated. The aptasensor showed an application potential for detecting Hg2+ in drinking water.