Method for measuring content of non-cobalt metal element in cobaltosic oxide

The invention discloses a method for determining the content of non-cobalt metal elements in cobaltosic oxide, which comprises the following steps: step 1, mixing a cobaltosic oxide sample with hydrochloric acid, stirring and dissolving, then fixing the solution, taking 10 ml of solution into a test tube, adding 10.4 g of cobalt detection powder, shaking and dissolving, standing for 5 minutes, then adding 0.3 g of cobalt detection powder II, shaking and dissolving, standing for 10 minutes, taking 10 ml of solution out of the test tube, and taking 10 ml of solution out of the test tube; directly obtaining the concentration of cobalt in the sample by using a water quality rapid detector, and recording the concentration as Ccobalt; step 2, calculating the total concentration of the cobaltosic oxide according to weighing, recording the total concentration as Ctotal, and then according to a formula C (non-cobalt) = Ctotal-Ccobalt; according to the method, the concentration of the cobalt metal element in the cobalt