荧光法测定乙醇在十二烷基硫酸钠胶束中的分配行为

Fluorimetric Determination of Distribution Behaviour of Ethanol in SDS Micellar System

乙醇浓度Ｃ＜５×１０－３ｍｏｌ／Ｌ，乙醇主要与胶束相结合，Ｃ＞８×１０－２ｍｏｌ／Ｌ，乙醇主要进入水相，在５×１０－３～８×１０－２ｍｏｌ／Ｌ范围内，同时进入水相与胶束相。

Flourimetric determinations show that there are certain relations between the concentration of ethanol C and the binding constants K and the distribution coefficient Pmw of ethanol in SDS micellar systems. When C<5 ×10-3 mol·L-1, most of the alcohol molecules exist in micellar phase; when C>8 × 10-2 mol· L-1, most of the alcohol molecules exist in water phase ; and when C value is between 5 × 10-3- 8 × 10-2 mol· L-1, alcohol molecules exist in water phase and micellar phase simultaneously.