Polarographic and Voltammetric Behavior of Cadmium(Ⅱ)-meso-tetrakis (p-sulfophenyl)porphyrin Complex
- VernacularTitle:镉(Ⅱ)-meso(4-磺基苯)卟啉络合物的极谱伏安行为
- Author:
Xiaoping WANG
;
Yong ZHANG
;
Jinghao PAN
- Publication Type:Journal Article
- From:
Chinese Journal of Analytical Chemistry
2001;29(3):290-292
- CountryChina
- Language:Chinese
-
Abstract:
The Polarographic and voltammetric behavior of Cd (Ⅱ)-meso-tetrakis(p-sulfophenyl)prophyrin (TPPS4） complex was defined and the cyclic voltammetric peak was obtained at 1.200 V (vs. SCE) in 0.3 mol/L NaoH solution. The characteristics of the peak have been examined in detail and the experimental results prove that the peak has adsorption properties. In addition to the number of electrons transferred in the reaction and the complex ratio, the stability const ant (β=1.19×107) was calculated. The peak current was proportional to the concentration of Cd (Ⅱ) over the rang 3×10－7～1×10－5 mol/L and the limit of detection was 6×10－8 mol/L. Furthermore a possible mechanism was proposed for the reduction of the complex.
