STUDY OF THE FLUORESCENCE ENHANCEMENT IN THE SYSTEM OF EUROPIUM-OR SAMAR-IUM-TERBIUM-DIBENZOYLMETHANE-CETYLTRIMETHYLAMMONIUM BROMIDE-TRITON X-100 AND ITS APPLICATION  

出　　处：《Chinese Chemical Letters》1992年第2期145-148,共4页中国化学快报（英文版）

摘　　要：A fluorescence enhancement phenomenon on adding terbium to the Eu or Sm-DBM-CTMAB-Triton X-100 fluorescence system was observed. The fluorescence intensity of this system was 50 times greater than that of the system without terbium at pH 9.0. The fluorescence intensity is a linear function of the concentration of europium or samarium in the range of 1.0×10^(-10)-8.0×10^(-6) mol/L and 1.0×10^(-7)-8.0×10^(-6) mol/L, respectively. The deteetion limits for them were 1.0×10^(-12) mol/L and 1.0×10^(-9) mol/L, respectively. This system was used for the determination of europium or samarium in rare earth samples with satisfactory results.A fluorescence enhancement phenomenon on adding terbium to the Eu or Sm-DBM-CTMAB-Triton X-100 fluorescence system was observed. The fluorescence intensity of this system was 50 times greater than that of the system without terbium at pH 9.0. The fluorescence intensity is a linear function of the concentration of europium or samarium in the range of 1.0×10^(-10)-8.0×10^(-6) mol/L and 1.0×10^(-7)-8.0×10^(-6) mol/L, respectively. The deteetion limits for them were 1.0×10^(-12) mol/L and 1.0×10^(-9) mol/L, respectively. This system was used for the determination of europium or samarium in rare earth samples with satisfactory results.

分 类 号：O6[理学—化学]