Rapid visual detection of aluminium ion using citrate capped gold nanoparticles |
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| Authors: | Chen Shan Fang Yi-Min Xiao Qing Li Ju Li Song-Bo Chen Hong-Ju Sun Jian-Jun Yang Huang-Hao |
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| Affiliation: | Ministry of Education Key Laboratory of Analysis and Determination for Food Safety, College of Chemistry & Chemical Engineering, Department of Chemistry, Fuzhou University, Fuzhou, 350108, China. |
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| Abstract: | We report the visual detection of Al(3+) using unlabeled gold nanoparticles (AuNPs) based on the complexation of Al(3+) with citric acid, resulting in the aggregation of AuNPs. The distinction of color change can be observed by the naked eye at concentrations down to 1.0 μM which is lower than the permissable level (7.4 μM) for drinking water as defined by the World Health Organization. |
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