Inventors: Gao YL
, Shen SC
, Yao KJ
Fluorescent ion imprinted sensor and application thereof in methyl mercury ion detection
Publication date: 2012
The invention provides an ion imprinted fluorescent sensor for selectively detecting methyl mercury ions and a preparation method for the ion imprinted fluorescent sensor. The sensor is prepared by the following three processes of: (1) forming a pre-copolymer by using the methyl mercury ions, a functional monomer and a fluorescent material through coordination; (2) adding a cross linker and an initiator, and performing initiated polymerization under proper conditions by using a microporous membrane as a supporting medium to immobilize template molecules in the polymer in a complementary spatial structure form; and (3) removing the template molecules from the polymer in an acid or ethylene diamine tetraacetic acid (EDTA) eluting mode, leaving specific holes, and thus obtaining the fluorescent methyl mercury ion imprinted composite membrane sensor. The obtained imprinted composite membrane shows high selectivity and sensitivity to methyl mercury ions, and can be reused for multiple times; and the fluorescent sensor is easy and fast to prepare, and can be used for selective detection of the methyl mercury ions in samples of environment and the like.
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