Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7148506 | Sensors and Actuators B: Chemical | 2013 | 6 Pages |
Abstract
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 8Â ÃÂ 10â9, 1.5Â ÃÂ 10â8, 10â8 and 10â8Â 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.
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Authors
Meiling Wang, Guowen Meng, Qing Huang, Yilin Lu, Yao Gu,