铜镍合金和镍合金中高含量镍的测定一般用重量法,此法准确度高,但速度慢,比色法速度快,但准确度差,以上两种方法都不能满足当前生产的需要。现在应用较多的是络合滴定法.资料[1]用电解除铜或用盐酸羟胺使铜(Ⅱ)还原 The determination of high nickel content in copper-nickel alloys and nickel alloys is generally carried out by gravimetric method. This method has high accuracy, but the method is slow, the colorimetric method fast, but the accuracy is poor, the above two methods can not meet the current production needs. Now more applications are complexometric titration. [1] The use of electrolytic copper or hydroxylamine hydrochloride to reduce copper (Ⅱ)