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由于铑的广泛使用,迫切需要一种方便易行的分析方法。重量分析法、可见光分光光度法测铑均有不足之处。1959年C.K. J.φrgensen曾测出RhCl_3~(3_-)在255纳米处有一个紫外特征吸收峰。这个峰强度很大,ε=2.07×10~4。Hrabikova等在1974年测定这个峰在含铑几个ppm范围内遵守朗伯—比耳定律。但RhCl_6~(3_-)在HCl浓度达8M以上才有
Due to the widespread use of rhodium, there is an urgent need for a convenient analytical method. Gravimetric analysis, visible spectrophotometry rhodium have deficiencies. 1959 C.K. J.φrgensen has measured RhCl_3 ~ (3_) has a UV absorption peak at 255 nm. The peak intensity is very large, ε = 2.07 × 10 ~ 4. Hrabikova et al. Determined this peak in 1974 to comply with Lambert-Beer’s law within a few ppm of rhodium. But RhCl_6 ~ (3_-) in the HCl concentration above 8M only