Studies on Solvation Effect on Colour Reactionof Multicomponent Complexes (Ⅱ) ——The Effects of Organic Solvents on Distribution Constants of Chrome Azurol S Between Micellar Phase and Water

Chem. J. Chinese Universities ›› 1989, Vol. 10 ›› Issue (8): 857.

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Studies on Solvation Effect on Colour Reactionof Multicomponent Complexes (Ⅱ) ——The Effects of Organic Solvents on Distribution Constants of Chrome Azurol S Between Micellar Phase and Water

Zhu Youyu, Yie Xiaolan

Department of Chemistry, Hangzhou University, Hangzhau

Received:1987-12-09 Online:1989-08-24 Published:1989-08-24

Abstract

Abstract: The distribution constants (K_D) of CAS (HR^3-) between micellar (CTMAB) and aqueous phase in the presence of organic solvents (DMSO, MeOH, EtOH, Me₂CO, i-PrOH, Dioxane) were determined by spectrophotometric method.The K_Dof the systems in the presence of organic solvent is higher than that of the systems without the presence of organic solvents.This indicates that the organic solvents increase the effective concentration of CAS (HR^3-) on the surface of the micelle, which is beneficial to colour reaction.The relationship between the distribution constant and sensitivity of colour reaction is studied in detail.

Key words: Chrome azurol S, Organic solvents, CTMAB, Distribution constants, Spectrophotometric method

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Zhu Youyu, Yie Xiaolan . Studies on Solvation Effect on Colour Reactionof Multicomponent Complexes (Ⅱ) ——The Effects of Organic Solvents on Distribution Constants of Chrome Azurol S Between Micellar Phase and Water[J]. Chem. J. Chinese Universities, 1989, 10(8): 857.

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Studies on Solvation Effect on Colour Reactionof Multicomponent Complexes (Ⅱ) ——The Effects of Organic Solvents on Distribution Constants of Chrome Azurol S Between Micellar Phase and Water

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