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Citation: Xiao Xinliang, Liu Ruixian, Zhang Shufen, Shen Hanxi, Yang Junjiao. Third Derivative Spectrophtometric Simultaneous Determination of Copper,Cobalt and Cadmium[J]. Chinese Journal of Applied Chemistry, ;1995, 12(5): 50-53. shu

Third Derivative Spectrophtometric Simultaneous Determination of Copper,Cobalt and Cadmium

1.
Department of Chemistry, Tianjin University, Tianjin 300072;
2.
Department of Chemistry, Nankai University, Tianjin 300072

Received Date: 31 December 1994
Revised Date: 20 April 1995

A method of third derivative spectrophotometric simultaneous determination of micro amount of copper,cobalt and cadmium with meso-tetrakis[4-(trimethylammonium)phenyl]porphine has been established. The absorption maxima of the third derivative spectra for copper,cobalt and cadmium complexes were localed at 412nm,434nm,438nm,respec-tively. They could be used for simultaneous determinatlon of copper,cobalt and cadmium. The molar absorptivities of third derivative spectra were 1.11 × 10⁶(Cu),3.95 × 10⁵(Co) and 6.47 × 10⁵(Cd)L·mol^-1·cm^-1,respectively. The method has been used to determine syn-thetic mixtures of copper,cobalt and cadmium,and satisfactory results were obtained with relative errors < 4%.
- copper,
- cobalt,
- cadmium,
- simultaneous determination,
- derivative spectropho-tometry,
- meso-tetrakis[trimethylammonium phenyl]porphine
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