【摘要】 本文研究了钪-间乙酰基偶氮氯膦-氯化十四烷基吡啶显色体系的光度特性,并确定了在该体系中以α型钪络合物进行测定的最佳条件。该体系与相应的二元体系相比,灵敏度、选择性和显色酸度均有较大提高。据此,提出了测定钪的新方法,用于铜基、镁基和铁基合成试样的测定,结果满意。更多还原

【Abstract】 The photometric properties of the ternary system of scandium—chlorophosphonazc-m-A—ttadecylpyridirnium chloride are studied. The optimum condition for determining scandium as α-type complex is established. The system obays Beer’s law in the range of 0-8μg Sc₂O₃/10ml. The apparent molar absorptivity is 5.2×10⁴. This system has higher sensitivity and selectivity than the binary system without tetradecylpyridinium chloride. A new method for determining scandium is proposed and is applied to the determination of scandium in synthetic samples of copper, magnesium and iron base alloys with satisfactory results,更多还原