铽-亚氨基二乙酸-钛铁试剂-表面活性剂荧光体系的研究

• 作 者: 朱贵云 杨景和 徐世瑶 牛衍涛
• 机 构: 山东大学化学系,山东大学化学系,山东大学化学系,山东大学化学系
• 出 处: 高等学校化学学报
• 发表日期: 1986年02期
• 关键词: 亚氨基二乙酸 表面活性剂 钛铁 荧光 CTMAB 最佳条件 离子缔合物 比耳定律 阴离子 试剂

本文研究了表面活性剂对于Tb(Ⅲ)-亚氨基二乙酸-钛铁试剂荧光体系的增敏作用,在表面活性剂CTMAB参与下,形成的四元离子缔合物的荧光强度比没有CTMAB时增加12倍,确定了测定的最佳条件,Tb~(3+)浓度在6.4×10~(-4)μg/ml—0.32pg/ml范围内符合比耳定律,100倍过量的十一种稀土离子,600倍过量的10种常见阳离子和1000倍过量的七种常见阴离子不干扰测定。

In this paper, the sensitizing effect of surfactants on the fluorescence system of Tb (Ⅲ) -iminodiacetic acid-ilmenite reagent was studied. Under the condition of surfactant CTMAB, the fluorescence intensities of quaternary ion-association complexes formed were less than that of CTMAB And the optimum conditions were determined. The concentration of Tb 3+ in the range of 6.4 × 10 -4 -4 μg / ml-0.32 pg / ml was in accordance with Beer’s law and 100-fold excess of eleven Rare earth ions, a 600-fold excess of 10 common cations and 1000-fold excess of seven common anions do not interfere with the assay.