以表面活性剂二 (2 -乙基己基 )磷酸铵作为反胶束 ,测定其浓度对萃取精氨酸的影响 ,确定最适宜的表面活性剂浓度 .测定水相中 Na Cl浓度对反胶束吸水率和萃取精氨酸的影响 .结果表明 ,以二 (2 -乙基己基 )磷酸铵为表面活性剂所形成的反胶束具有较其它反胶束更强的萃取能力 ,具有良好的吸水性能 .适合于从高盐浓度 (4.5mol·L-1 )的水溶液中 ,萃取出氨基酸 . The surfactant, di (2 - ethylhexyl) ammonium phosphate, was used as reverse micelles to determine the effect of its concentration on the extraction of arginine and to determine the most suitable surfactant concentration. Water absorption and extraction of arginine.The results showed that the reverse micelles formed by using di (2 - ethylhexyl) ammonium phosphate as surfactant had stronger extraction ability than other reverse micelles and had good water absorption It is suitable for extracting amino acids from aqueous solution of high salt concentration (4.5 mol·L-1).