氟离子选择电极测定镀铬液中的氟硅酸

Ion Selective Electrode Analysis of Silicofluoric Acid in Chromium Plating Solution

试验用氟离子选择电极测定复合镀铬溶液中的氟硅酸。采用柠檬酸钠消除Ａｌ３＋、Ｆｅ３＋和稀土金属离子的干扰，控制溶液的ｐＨ值为５～６。本方法简便快速。

Rapid analysis of H2SiF6 in the mixed-catalyst chromim plating solution can be made simply with an ion selective electrode. Interferences of Al3+,Fe3+and rare metal ions are eliminated by the addition of sodium citrate solution at a pH of 5-6.