STUDY ON THE MICROSTRUCTURE AND PROPERTIE S OF EXTRACTED ORGANIC-PHASE

Extracted organic phases of HDEHP [di(2-ethylhexyl) phosphoric acid] c ontaining lanthanide ions have been characterized by FTIR, fluorescenc e and ICP/AES spectroscopic measurements. The result demonstrates that (1) the water content in extracted organic phase decreases as the loa ding percentage of lanthanide increases; (2) The fluorescence investig ation displays no mixed micelle of Na (or K)-HDEHP and Re-HDEHP formed in the organic phase; (3) The extracted organic phase is a sort of co mplex fluid, which has multiple aggregation states and different micro structures.