D2EHPA, Span 80 and Sulphonating-kerosene are used as carrier , surfactant and diluent, resppectively, to compose the liquid membrane system.

• 采用二-(2-乙基己基)磷酸为载体和表面活性剂失水山梨醇单油酸酯、磺化煤油组成液膜体系。