Highly Selective Colorimetric Detection of Copper Ions Using Cysteamine Functionalized Gold Nanoparticles |
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| Authors: | Le Li Zhiqin Yuan Xinkai Peng Lin Li Jiantai He Yangde Zhang |
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| Affiliation: | 1. National Hepatobiliary and Enteric Surgery Research Center, Central South University, Changsha 410008, P.?R. China, Tel: +86 731 84327942;2. Fax: +86 731 84327943;3. Food Safety Engineering Technology Research Center of Hunan Province, Changsha 410008, P.?R. China;4. Department of Chemistry, National Taiwan University, 1, Section?4, Roosevelt Road, Taipei 10617, Taiwan |
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| Abstract: | In this study, we designed a system of integrating gold nanoparticles and cysteamine to detect Cu2+ based on a colorimetric strategy. The quantified limit of detection towards Cu2+ is 0.4 µM, which is ～50 times lower than the maximum contamination level (～20 µM) in drinking water permitted by US environmental protection agency. The practicality of this system was further validated by detecting Cu2+ in different water samples. |
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| Keywords: | Copper ions Gold nanoparticles Colorimetric Cysteamine |
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