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离子选择电极电位法测定沉淀的溶度积的方法多为测出离子活度按活度乘积直接进行计算。作者在前文中介绍了利用滴定曲线方程式和最小二乘计算处理求得溶度积和等当点的方法。本文用自制的苯扎溴胺药物电极和服止宁药物电极,测定了它们与四苯硼钠形成缔合物沉淀的K_(sp),还用铜、铝离子电极测定了邻氨基苯甲酸和铜铁试剂与Cu~(2+),pb~(2+)离子生成沉淀的K_(sp)。用回归程序进行数据处理得到了满意的结果。
Ion-selective electrode potentiometric method for the determination of the solubility of precipitation precipitation method for the determination of ion activity by the activity of the direct calculation. The author introduced in the previous article using the titration curve equation and the least squares calculation to obtain the solution product and the equivalence point method. In this paper, the K_ (sp) precipitated by the tetraphenylboron sodium and the benzalkonium bromide drug electrode and the Fudingting drug electrode were measured, and the anthranilic acid and copper Iron reagent and Cu ~ (2 +), pb ~ (2+) ions generated precipitation K_ (sp). Satisfactory results have been obtained using regression programs for data processing.