Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1246476 | Talanta | 2006 | 5 Pages |
Abstract
A novel film modified electrode for the determination of trace lead was developed in this work. The modified electrode was prepared by the electropolymerization of N,Nâ²-(o-phenylene)-bis-benzenesulfonamide (PBSA) as the ion capturing reagent to create the functional film. The modified electrode shows a high selectivity towards Pb2+ over interfering cations, e.g. Cu2+, Cd2+, Co2+, Ni2+, Zn2+, Cr2+, and the calibration curve was linear in the concentration range of 2.0Â ÃÂ 10â9 to 1.0Â ÃÂ 10â7Â M with correlation coefficient of 0.999. For 20Â min accumulation, detection limit of 1.0Â ÃÂ 10â9Â M was obtained at the signal to noise ratio of 3. Analytical availability of the modified electrode was demonstrated by the application for samples from pond water.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Lei Zhang, Wei Li, Mianhong Shi, Jilie Kong,