摘要
研究了用玻璃ｐＨ电极作参比电极测定废水中氰含量的新方法。方法的ｐＣＮ线性域为１．０～５．５，酸度范围为ｐＨ＝４～１３，回收率为１００％～１０７％，响应时间不大于３０ｓ。方法快速简单，样品不需分离，精密度和准确度满足分析要求。
A new potentiometric method for the determination of total cyanide is described, inwhich cyanide electrode served as a senstive electrode and pH glass electrode as a reference elective in basic and acid media. The cyanide electrode exhibited Nernstian response for totalcyanide concentrtion ranging from 10-5.5 to 10-1 mol·L-1 at pH 4～13, the response time wasless than 30s. This method has been applied to determinate the content of cyanide in acid wastewater. It was simple and fast with recovery of 100%～107%.
出处
《西北林学院学报》
CSCD
1995年第4期76-79,共4页
Journal of Northwest Forestry University
关键词
离子选择性电极
氰化物
废水分析
ion selective electrode
cyanide
waste water analysis
