Sensitive and selective colorimetric detection of Hg2+ by a Hg2+ induced dual signal amplification strategy based on cascade-type catalytic reactions

Suping Li; Jianping Lai; Liming Qi; Muhammad Saqib; Saadat Majeed; Yuejing Tong; Guobao Xu

doi:10.1039/C5AN02672E

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Sensitive and selective colorimetric detection of Hg²⁺ by a Hg²⁺ induced dual signal amplification strategy based on cascade-type catalytic reactions†

Suping Li,^ab Jianping Lai,^bc Liming Qi,^bc Muhammad Saqib,^bc Saadat Majeed,^bc Yuejing Tong*^a and Guobao Xu*^b

Author affiliations

* Corresponding authors

^a College of Chemistry and Chemical Engineering, Fujian Normal University, Fuzhou 350007, People's Republic of China
E-mail: tongyuejin@fjnu.edu.cn
Fax: +86 591 83531762
Tel: +86 591 83531762

^b State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
E-mail: guobaoxu@ciac.ac.cn
Fax: +86 431 85262747
Tel: +86 431 85262747

^c University of the Chinese Academy of Sciences, Chinese Academy of Sciences, No. 19A Yuquanlu, Beijing 100049, PR China

Abstract

A simple and fast colorimetric method is developed for the sensitive and selective detection of Hg²⁺ based on a dual signal amplification strategy: in situ Hg²⁺ induced catalytic synthesis of oxidase-like AuHg nanoparticles and subsequent catalytic oxidation of TMB by AuHg nanoparticles.

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Article information

DOI: https://doi.org/10.1039/C5AN02672E
Article type: Communication
Submitted: 30 Dec 2015
Accepted: 08 Mar 2016
First published: 08 Mar 2016

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Analyst, 2016,141, 2362-2366

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Sensitive and selective colorimetric detection of Hg²⁺ by a Hg²⁺ induced dual signal amplification strategy based on cascade-type catalytic reactions

S. Li, J. Lai, L. Qi, M. Saqib, S. Majeed, Y. Tong and G. Xu, Analyst, 2016, 141, 2362 DOI: 10.1039/C5AN02672E

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