Chromatographic study of anionic complexes

Summary

The diffusion of tartrate complexes of Cu²⁺, Co²⁺, Ni²⁺ and Cd²⁺ through filter paper strips has been examined using 50% and 60% ethanol as solvents. The R_f values are higher when 50% ethanol is used. When 50% ethanol is used, it is noted in the case of Cu²⁺, Co²⁺ and Ni²⁺ that the R_f values decrease with the addition of tartrate in the beginning. Then the value increases and finally becomes constant. In case of Cd²⁺ the R_f value decreases by the addition of tartrate. In 60% ethanol the R_f value does not change by small additions of tartrate but decreases with higher concentration of the complexing agent. In case of Cd²⁺ the R_f value becomes zero by increasing the concentration of tartrate.