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在盐酸一六次甲基四胺缓冲溶液(pH5.7)中,Sc(Ⅲ)与CAS和CPC形成兰色络合物,λ_(max)=620 nm,ε_(max)=1.73×10~5,Sc(Ⅲ)含量在0～10 μg/25 mL范围内符合比尔定律。方法用于测定南方矿中的微量钪。
The results showed that Sc (Ⅲ) formed a blue complex with CAS and CPC (λ max = 620 nm and ε max = 1.73 × 10 ~ (-1)) in a solution of hexamethylenetetramine hydrochloride (pH5.7) 5, Beer’s law is obeyed in the range of 0 ~ 10 μg / 25 mL for Sc (Ⅲ). The method was applied to the determination of trace scandium in southern mines.