| 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.
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