Issue 2, 2012
From the journal:

Analytical Methods

A simple and sensitive colorimetric method for detection of mercury ions based on anti-aggregation of gold nanoparticles†

Tingting Lou,ad   Ling Chen,ad   Chunrong Zhang,b   Qi Kang,b   Huiyan You,c   Dazhong Shenb  and  Lingxin Chen*a  

* Corresponding authors

a Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
E-mail: lxchen@yic.ac.cn
Fax: +86-535 2109130
Tel: +86-535 2109130

b The Key Lab in Molecular and Nano-materials Probes of the Ministry of Education of China, College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, China

c Environmental and Chemical Engineering College, Dalian University, Dalian, China

d Graduate University of Chinese Academy of Sciences, Beijing, China

Abstract

A simple and sensitive method for the colorimetric detection of mercury ions (Hg2+) has been proposed by using anti-aggregation of gold nanoparticles (AuNPs) based on the co-ordination between thymine and mercury ions. The thymine can bind to the AuNPs through Au–N bonds and induce aggregation of AuNPs. In the presence of Hg2+, the thymine was released from the surface of AuNPs via the formation of a thymine-Hg2+ coordination complex, leading to the dispersion of AuNPs. The detection reagent can be simply prepared by mixing thymine with citrate-capped AuNPs. This method is not only cost-effective, but also avoids complicated surface modifications and tedious separation processes.

Graphical abstract: A simple and sensitive colorimetric method for detection of mercury ions based on anti-aggregation of gold nanoparticles

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Article information

DOI
https://doi.org/10.1039/C2AY05764F
Article type
Paper
Submitted
09 Nov 2011
Accepted
07 Dec 2011
First published
13 Jan 2012

Anal. Methods, 2012,4, 488-491

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A simple and sensitive colorimetric method for detection of mercury ions based on anti-aggregation of gold nanoparticles

T. Lou, L. Chen, C. Zhang, Q. Kang, H. You, D. Shen and L. Chen, Anal. Methods, 2012, 4, 488 DOI: 10.1039/C2AY05764F

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