The Cocolourtion Reaction of Bismuth-Scandium with Asymmetric Bisazo of Chromotropic Acid Containing —AsO_3H_2 and the Study on Spectrophotometric Determination of Bismuth
Li Honghuang Luo Qingyao Wang Mingzhi(Shaugdong Agricultural Univresity) (Wuhan University)
The cocolourtion reaction of Bi-Sc with ten bisazo derivative of chromotropic acid containing —AsO_3H_2 have been studid in this paper. Five kind of reagents such as TBA were found to have cocolourtion reation with Bi-Sc. The apparent molar absorptivity of the polynuclear complex is 9.4×1~4L·mol~-1·cm~-1.A large amount of common ions don't interfere the determination of Bi. The trace Bi in alloy can be determined direatly without the separation.