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CPApC与钪在0.56mol/l盐酸介质中形成2∶1的络合物,其最大吸收波长在735nm处,表现摩尔吸光率为6.79×10~4l·mol~(-1)·cm~(-1)。利用标准加入-回扣法,在25ml溶液中0~5μg的钪符合比耳定律。由于矿样中含钪量甚微而伴生元素众多,为此,经沉淀、萃取分离后,测定了地矿部提供的4种样品,分析结果与标准数据基本一致,回收率在96.5~102%之间。
CPApC and scandium formed a 2: 1 complex in 0.56mol / l hydrochloric acid medium with the maximum absorption wavelength at 735nm, which showed a molar absorptivity of 6.79 × 10 ~ 4l · mol ~ (-1) · cm ~ (- 1). With standard addition-rebate method, 0-5 μg of scandium in 25 ml of solution comply with Beer’s law. Due to the small amount of scandium in the ore sample and the large number of associated elements, four samples provided by the Ministry of Geology and Mineral Resources were determined after precipitation and extraction. The analytical results are in good agreement with the standard data, and the recovery rate is between 96.5 and 102% between.