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铊的吸光光度多数是Tl(Ⅲ)与HBr或HCl形成络阴离子,加入碱性染料形成离子缔合物被有机溶剂萃取后测吸光度。常用碱性染料有:甲基紫、罗丹明等,其显色体系的摩尔吸光系数分别为6.4×10~4和8.7×10~4。这些方法虽有较高的灵敏度,但选择性较差。本文所提出以Tl(Ⅲ)I一次甲基蓝浮选光度法测
Thallium absorbance luminosity majority of Tl (III) and HBr or HCl to form a complex anion, adding basic dyes to form ion-association was extracted by the organic solvent measured absorbance. Commonly used basic dyes are: methyl violet, rhodamine, the molar absorption coefficient of the color system were 6.4 × 10 ~ 4 and 8.7 × 10 ~ 4. Although these methods have higher sensitivity, but less selective. In this paper, Tl (Ⅲ) I methyl blue flotation spectrophotometric method