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- Title
A highly sensitive 'test paper' for Hg<sup>2+</sup> ions based on polyurethane membrane.
- Authors
Li, Xianghong; Yang, Zhen; Cheng, Xinjian; Zhang, Huijuan; Wu, Guiping; Zhang, Aiqing
- Abstract
Heavy metals have caused a lot of serious problems to human beings. A reusable, highly sensitive metal sensor based on polyurethane membrane, which can detect and remove Hg2+ ions, was prepared and tested in this work. A sensor with hydroxyl (−OH) group was grafted to polyurethane, and the heavy metal sensitive membrane was synthesized accordingly. Upon addition of Hg2+ ion solution to the as-prepared membrane, the color change occurred instantly. Moreover, different colors appeared with different concentration of the Hg2+ ions, which could make the membrane be employed as a heavy metal 'test paper'. In addition, the membrane sensor could be recycled after the interaction with Hg2+ ions by treating the used membrane with dilute ethylenediaminetetraacetic acid 2Na solution. This efficient and easily prepared membrane-based sensor has a promising application in environmental science. Copyright © 2013 John Wiley & Sons, Ltd.
- Subjects
POLYURETHANES; ARTIFICIAL membranes; METAL detectors; ENVIRONMENTAL sciences; ENVIRONMENTAL research
- Publication
Polymers for Advanced Technologies, 2013, Vol 24, Issue 12, p1110
- ISSN
1042-7147
- Publication type
Article
- DOI
10.1002/pat.3192