亚硝基红盐测定钴的方法在分析中被广泛采用,但铁的干扰较大,铁基试样和镍基试样曲线不能重合。我们试验了在铁基试样中加入一定量的镍;并以先加入硝酸,再加入亚硝基红盐及乙酸钠作空白,解决了 The method for the determination of cobalt by nitroso red salt is widely used in the analysis, but the interference of iron is larger, and the curve of the iron-based sample and the nickel-based sample can not be overlapped. We tested the iron-based sample by adding a certain amount of nickel; and first added nitric acid, then add nitroso red salt and sodium acetate as a blank to solve