简易型pH复合电极的研制

作者研制了无液接Ag/AgCl参比电极和简易型金属pH复合电极,并测试了它们的性能。该参比电极响应快,性能稳定。复合电极虽受氧化还原剂、络合剂干扰,但用于常见天然水、土壤及水果pH值的测定,结果仍然满意,用于酸碱自动电位滴定亦简便、快速,精密度高。

Preparation on a Simply Complex pH-Electrode

Silver/silver chlorde reference electode without liquid junction and a complex electrode of simple pH are suggested. Their properties are also measured. The experiments show that the reference electrode respondes fast, have a good stability. The complex electrode determation of pH values in natural water, soil and fruit are still satisfactory, though the eletrode is interfered by oxidation-reduction agents and complexing agents. It is found to be conveniently, fast and high accuracy to carry out acid-base automatic potential titration.