Fluorophore-modified Fe₃O₄-magnetic-nanoparticles for determination of heavy metal ions in water

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• 作者：Meiling Wang ; Guowen Meng ; Qing Huang ; Yilin Lu ; Yao Gu
• 关键词：Fe3O4 nanoparticles ; Fluorescence detection ; Cu2+ ; Cd2+ ; Zn2+ ; Hg2+
• 刊名：Sensors and Actuators B: Chemical
• 出版年：2013
• 出版时间：August, 2013
• 年：2013
• 卷：185
• 期：Complete
• 页码：47-52
• 全文大小：1740 K

文摘

A prototype of fluorescence sensor, based on 1,4-dihydroxyanthraquinone (1,4-DHAQ) derivative and 9-fluorenylmethyl chloroformate (Fmoc-Cl) co-modified Fe₃O₄ magnetic nanoparticals (MNPs) (denoted as 1,4-DHAQ/Fmoc-Cl co-modified Fe₃O₄ MNPs), has been achieved via solvothermal synthesis of amine-functionalized Fe₃O₄ MNPs and subsequent surface co-modification of 1,4-DHAQ derivative and Fmoc-Cl onto the Fe₃O₄ MNPs. The 1,4-DHAQ/Fmoc-Cl co-modified Fe₃O₄ MNPs can be used for not only simple rapid qualitative detection of Cu²⁺, Cd²⁺, Zn²⁺ and Hg²⁺ in aqueous solution, but also quantitative analysis of the above four heavy metal ions with lower detection limits of 8 ¡Á 10^?9, 1.5 ¡Á 10^?8, 10^?8 and 10^?8 M, respectively. This is the first prototype of fluorescence sensor that has potentials in the detection of Cu²⁺, Cd²⁺, Zn²⁺ and Hg²⁺ in aqueous solutions and even in drinking water. The sensor designing idea might be extended to other multifunctional chemosensors.