镧-偶氮氯膦mA极谱络合吸附波研究

极谱法测定稀土元素镧,文献报导较少.高小霞等研究了镧—8—羟基喹啉—马来酸体系的极谱行为,姚修仁等研究了镧—铜铁试剂—二苯胍体系的极谱行为.偶氮氯膦mA(CPA—mA)是一种良好的显色剂,用于直接光度法测定稀土总量已有指导.而用于极谱络合吸附波测定镧.文献未见报导.为此我们提出了镧—偶氮氯膦—mA在NH_4OH—NH_4Cl体系的示     

ENERGY TRANSFER FROM PHTHALIC ACID-TERBIUM COMPLEX TO EUROPIUM(Ⅲ)

The intramolecular energy transfer of ortho-phthalic acid-terbium[Tb(phth)_3]and ortho-toluicacid-terbium[Tb(tolu)_3],the intermolecular energy transfer from Tb(phth)_3 to Eu~(3 ) in solution and theirluminescent property have been studied by absorption,Infrared,fluorescence and time-resolved emissionspectroscopic method.The influences of solvents and pH of the media on the emission intensity and thelifetime are discussed as well.