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近年来,偶氮氯膦Ⅲ显色剂在稀土和碱土金属方面的研究和应用早有报导,然而在过渡金属元素的研究分析应用上却很少见。本文研究用灵敏度较高的偶氮氯膦Ⅲ显色剂,直接分光光度法测定钛。在pH=1的盐酸介质中,钛与偶氮氯膦Ⅲ生成1:1蓝紫色络合物,有色络合物最大吸收波长为690nm,摩尔吸光系数达1.5×10~5,钛含量在0～
In recent years, the research and application of the chlorophosphonazo Ⅲ chromogenic agent in rare earth and alkaline earth metals have been reported for a long time, however, rare in the research and application of transition metal elements. In this paper, the higher the sensitivity of chlorophosphonazo Ⅲ color reagent, direct spectrophotometric determination of titanium. In pH = 1 hydrochloric acid medium, titanium and chlorophosphonazo Ⅲ generated 1: 1 blue-violet complex, the maximum absorption wavelength of the colored complex was 690 nm, the molar absorption coefficient was 1.5 × 10 -5, and the content of titanium was 0 ~