应用离子选择性电极的电位测定法是近年发展起来的一种新的分析方法,具有简单、快速、准确、选择性强和灵敏度高等优点,对分析化学、冶金、地质、化工、海洋、医药卫生及环境保护等均有重大意义。湖南冶金研究所于1974年在自力更生的原则基础上研制成氟化镧单晶膜电极。利用该所二厂干法氟化制得的LaF_3粉末由长沙半导体材料厂拉制的单晶 Application of ion selective electrode potentiometry is developed in recent years, a new analytical method, with the advantages of simple, fast, accurate, selective and high sensitivity, analytical chemistry, metallurgy, geology, chemical, marine, medical and health And environmental protection are of great significance. Hunan Institute of Metallurgy in 1974 on the principle of self-reliance developed into single-crystal lanthanum fluoride membrane electrode. The use of the two factories dry fluoridation of LaF_3 powder by the Changsha Semiconductor Materials Factory drawn single crystal