Determination of the stability constant of the ternary complex formed in the copper-bipyridyl-eriochrome cyanine R system, by an isosbestic point-spectrophotometric method.
This paper reports a new method for determining the stability constants of ternary complexes, based on analysis of isosbestic points. First, it is necessary to determine the absolute molar absorptivities of the various species concerned, then their concentrations and the stability constant. In this method, the approximate treatment of classical photometric methods is not required. The conditional constant can be calculated directly from the measured data.
Zou
S F
SF
Department of Chemistry, Shandong University, Jinan, Shandong, People's Republic of China.
Liang
W A
WA