银量法的改进及银的回收

The improvement of silver coulometry and recovery of silver

文中报道了以示波图形突变来确定银量法的终点。由于终点直观，不受溶液颜色、沉淀的影响，具有准确、快速、简单、省药的特点，克服了经典法的不足。此外，还介绍了从废液中回收银的原理和几种方法。

In this paper,the terminal of silver coulometry is ascertained according to the sudden change of the pattern of oscillogram.Due to the terminal is visual without influence of solution color and precipitate,this method is characterized by accuracy,speediness,simplicity and decreasing of reagent consumption,by which the effects from classical method are overcome.In addition,the principle of recovering silver from waste solution and methods of recovering silver are introduced.