The transfer behavior of copper(Ⅱ) through the emulsion liquid membrane system was studied.Kerosene and span80-SDS(sodium dodecyl sulfate)were used as the membrane solvent and the surfactants,respectively.NH3 was used as the reagent in internal phase.The effect of stirring velocity for emulsifing,the emulsifing time and mixing time of milk and external phase solution,the concentration of surfactants and NH3,the ratio of milk to water and oil phase to internal phase were discussed in detail.The optimum conditions were established.
