Abstract: The molecularly imprinted polymers were synthesized with CH3Hg+ as a template, 4-vinylpyridine as a functional monomer. 8-Mercaptoquinoline was used as both a complex-forming agent and a fluorescence tag. The free-radical polymerization was performed within PVDF films and was initiated by 4,4'-azobisisobutyronitrile at 65 °C in dimethyl sulfoxide. The polymer showed a high selectivity for methylmercury ion. The optimum pH value was at 7.0. The detection limit for the method was up to 3.5 x 10-7 mol/L. The polymer was applied in the determination of methylmercury ions in real water samples. The method showed a high selectivity against other metal ions and the recoveries for methylmercury ions were in the range of 93%-104%.
Template and target information: methylmercury cation
Author keywords: methylmercury ion, 8-mercaptoquinoline, molecular imprinting technology, Fluorescence sensor