STUDY ON THE CO-LUMINESCENCE SYSTEM SM-GD-BPMPHD-CTMAB AND ITS ANALYTICAL APPLICATION

It has been found that the Sm-BPMPHD-CTMAB ion association system show s a strong fluorescence intensity. In this system some rare earth ions , such as Lu3+, Y3+, Gd3+ and Tb3+, exert an evident fluorescence enha ncement effect. The formation conditions of the system and the factors affecting the columinescence effect were studied in detail in order t o determine trace amounts of Sm3+. Under optimum conditions a linear r elationship was obtained between the fluorescence intensity and the Sm 3+ Concentration in the range of 5.0 x 10(-8)-8.0 x 10(-6) mol . L-1. The detection limit of Sm3+ was 2.0 x 10(-8) mol . L-1. The determinat ion gave satisfactory results.