探讨了吡啶—2.6—二羧酸纸上荧光法测定痕量铕、铽的最佳条件与各种影响。实验结果表明:利用本方法可测定分别低于18ng的痕量Eu~(3+)、Tb~(3+),检测限分别达到0.5、1.9ng,线性关系良好,且相互不干扰。将该法应用于人工合成试样中Eu~(3+)、Tb~(3+)的测定,回收率在92～110％之间,相对标准偏差均小于6.7％。 The optimum conditions and various influences of trace europium and terbium on the pyridine-2,6-dicarboxylic acid paper were discussed. The experimental results show that the detection limits of Eu 3+ and Tb 3+ can reach 0.5 and 1.9 ng, respectively, which are less than 18 ng. The linearity is good and the results do not interfere with each other. The method was applied to the determination of Eu ~ (3 +) and Tb ~ (3+) in synthetic samples. The recoveries ranged from 92% to 110% with relative standard deviations less than 6.7%.