Abstract:A method for the determination of vanadium in waste hydrodesulfurization (HDS) catalyst by alkali fusion inductively coupled plasma atomic emission spectrometry (ICP-OES) was established to assist in the recovery experiment of HDS catalyst. Sodium peroxide was used to melt the sample, the volume was fixed after leaching with hydrochloric acid, the acidity of hydrochloric acid was controlled to 10% after diluting the test solution, and vanadium 292.401 nm was selected as the analytical spectral line. The test results show that in order to eliminate the influence of matrix effect, it is necessary to make the content of sodium and hydrochloric acid in the test solution the same as that in the standard solution. The mass concentration of vanadium is 1.00-20.00 μ At g / ml, it has a linear relationship with the emission intensity, and the correlation coefficients are all 1. Vanadium in five waste HDS catalyst samples was determined according to the above method, and tested 11 times by grubs test method. The determination results have no abnormal value, and the recovery rate of standard addition is 99% - 101%. This method effectively solves the problem of vanadium determination in waste hydrodesulfurization (HDS) catalyst, and can be used to determine HDS catalyst with vanadium content of 0.50% - 10.00%. At the same time, it provides a new idea for the determination of vanadium in other products.