【摘要】 主要研究了 Tb3＋－ TPA－ TPPO(Phen)体系在 TritonX－ 100与乙醇存在下的荧光性质及 Gd3＋、 Y3＋对 Tb3＋－ TPA－ TPPO荧光强度影响。试验表明：在 pH值为 6的溶液中， Tb3＋－ TPA体系的荧光并不见强；在 TB3＋－ TPA体系中加入 TPPO和 Triton X－ 100，并调节溶液的 pH至 4，则 Tb3＋的荧光强度大幅度提高； Gd3＋、 Y3＋对 Tb3＋－ TPA－ TPPO的荧光强度具有明显增强作用。此法用于痕量 Tb3＋的测定，其检出限可达 2× 10－ 9mol/L。更多还原

【Abstract】 In this paper,the fluorescence feature of Terbium－ TPA－ TPPO(Phen)and the influence of Yttrium,Gadolinium on the fluorescence intensity of Terbium－ TPA－ TPPO in Triton X－ 100－ ethanal solution were studied.The experimental result showed that the fluorescence intensity of Terbium－ TPA was not high at pH=6,the fluorescence intensity was enhanced when Terbium－ TPA was treated with TPPO and Triton X－ 100 at pH=4,the addition of Gadolinium or Yttrium could distinctly enhances the fluorescence intesity of Terbium－ TPA－ TPPO.This system was applied to the determination of trace Terbium,the detection limits of Terbium was 2× 10－ 9mol· L－ 1更多还原