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本文对采用铱(Ⅲ)-氯化亚锡-罗丹明B高灵敏显色体系浮选光度法测定铱进行了研究。表观摩尔吸光系数ε553nm=4.77×10~5L·mol~(-1)·cm~(-1),铱含量在0～18.0μg/25ml范围内符合比耳定律。对外来离子的干扰和分离进行了研究,拟定的方法可用于一些低品位物料中铱的分析。
In this paper, Iridium (Iridium) was studied by means of flotation spectrophotometry with iridium (Ⅲ) -tin chloride-rhodamine B highly sensitive system. The apparent molar absorptivity ε553nm = 4.77 × 10 ~ 5L · mol ~ (-1) · cm ~ (-1), and the iridium content complies with Beer’s law in the range of 0 ~ 18.0μg / 25ml. The interference and separation of extraneous ions have been studied. The proposed method can be used for the analysis of iridium in some low-grade materials.