用铅离子选择电极电位滴定钙芒硝中的硫酸根

Determination of Sulfuric Acid Root in Glauberite by the Lead Ion Choice Electrode Electric Potential Fitration

对利用铅离子选择电极作为指示电极 ,电位滴定法测定硫酸根的方法中测定条件进行选择和研究 ,硫酸铅于水中的溶解度较大 ,若用铅离子滴定水中的硫酸根 ,则灵敏度不高 ,电位突跃较差 ,须选择适当的低极性溶剂与水互溶形成混合体系 ,以降低硫酸铅的溶解度 ,使电位滴定终点获明显的突跃。

Using the lead ion choice electrode as instructions electrode, the electric potential titration method measured sulfuric acid root, in the method measuring conditions were studied, The result showed the measuring method was good.