Among three kinds of extractant , the entropy of tbdooda extraction is biggest , that of tbopda is least . lt means that configuration entropy makes the greatest contribution to the whole entropy change of extraction 只有tbopda适宜于从hllw中问收分离钢系和澜系元素,对三价崩谰苹取分配比高。选择的稀释剂为40煤油辛醇。