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报道了以钌(Ⅲ)催化KIO4氧化CPA DBC为基础的测定微量钌的催化光度分析,建立了一种在水相中直接测定微量钌的方法。钌(Ⅲ)含量在4.0～30.0μg·L-1范围内符合比耳定律,检出限为4.0μg·L-1。方法用于贵金属精矿中钌的测定,结果满意。
A catalytic spectrophotometric method for the determination of trace ruthenium based on ruthenium (Ⅲ) -catalyzed KIO4 oxidation of CPA DBC was reported. A method for the direct determination of trace ruthenium in aqueous solution was established. The Beer’s law was conformed to the ruthenium (Ⅲ) content in the range of 4.0 ~ 30.0μg · L-1 with the detection limit of 4.0μg · L-1. The method was applied to the determination of ruthenium in precious metal concentrates with satisfactory results.