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作者用银离子选择电极直接电位法测定水中微量及痕量CN~-。以Ag(CN)_2~-为指示剂,采用多次标准加入法和格氏作图法求出溶液中CN~-含量。此法比用氰离子选择电极灵敏度高,比用比色法简便快速。
The authors used silver ion selective electrode direct potential method for the determination of trace and trace CN in water. Using Ag (CN) 2 ~ - as indicator, the content of CN ~ - in solution was determined by standard addition method and Grignard plotting method. This method is more sensitive than using cyanide ion selective electrode, than the colorimetric method is simple and fast.