Preparation and Application of Molecular Imprinting Polymer Based Zero Current Potential Sensor for Benzidine
10.11895/j.issn.0253-3820.150052
- VernacularTitle:联苯胺分子印迹聚合物零流电位法传感器的制备及其应用
- Author:
Mingming MA
;
Chenglong LIU
;
Xinke SU
;
Fengqiu AN
;
Wei ZHANG
- Publication Type:Journal Article
- Keywords:
Benzidine;
Molecular imprinting polymer;
Zero current potential;
Graphene
- From:
Chinese Journal of Analytical Chemistry
2015;(7):1021-1026
- CountryChina
- Language:Chinese
-
Abstract:
The effects of polymerization conditions including scan potential range, scan cycles, the concentration ratio of template molecules to functional monomer, pH of the buffer, and washing time for removing the template molecule from the imprinted polymer on the difference of zero current potential of benzidine ( BZ) interaction with BZ-MIP were investigated. The optimum preparations were obtained. The imprinted capacity of benzidine, 4-chloroaniline, and 4-aminobiphenyl and carmine was calculated as 0. 632, 0. 1123, 0. 1123, 0. 0847 and 0. 0725, respectively. This indicated that BZ-MIP had good specific recognition and selectivity to benzidine, and other substances did not interfere with the binding of BZ-MIP with BZ. The zero current potential variation was linear with the lorgarithm of BZ concentration in the range of 4í10-8-1í10-5 mol/Lwith detection limitation of 1. 89í10-8 mol/L. The sensor was used to detect BZ in waste water sample with recoveries of 95 . 7%-104 . 2%.
