试剂硝酸钴中镍的分析一般按部颁标准丁二酮肟法。也有用二甲基乙二醛肟或α-联糠偶酰为试剂的比色法。这些方法需经萃取,从大量钴中分离少量镍,既费时又不易分离完全。采用示波极谱直接测定试剂硝酸钴中的镍,方法简单,半小时可以完成一组样品。方法是在1N的硫氰酸钾底液中,用加入法加入一定量的标准镍(pH为6—7.5),在峰值电位为-0.88伏(相对于饱 Reagents Analysis of nickel nitrate in cobalt generally according to ministerial standards dimethylglyoxime method. There are also dimethylglyoxime oxime or α-linked furil coupling reagent. These methods need to be extracted, separating a small amount of nickel from a large amount of cobalt, which is both time-consuming and difficult to separate completely. Using oscillopolarographic direct determination of nickel in cobalt nitrate reagent, the method is simple, a half hour to complete a set of samples. The method is to add a certain amount of standard nickel (pH 6-7.5) by addition method at a 1N potassium thiocyanate base solution at a peak potential of -0.88 volts