Using Sm 3+ as an example, the extraction spectrophotometric characteristic of the system of Ln 3+ 5,7 dichloro 8 hydroxyquinoline(DCO) safranine T(SFT) has been investigated.

• 以Sm3＋为例研究了Ln3＋?5，7?二氯?8?羟基喹啉（DCO）?藏红花（SFT）形成三元离子缔合物的萃取?光度特征。