Abstract:Industrial sulfuric acid waste catalysts contain a large amount of vanadium, sodium, potassium, sulfur, and a small amount of aluminum, iron, and arsenic elements. They are often used as important raw materials for extracting vanadium and alkali metal salts. Rapid and accurate determination of the content of relevant components in waste catalysts and leaching residues is crucial for their separation and extraction. On the basis of column chromatography separation, this article investigated the leaching rates of V, Na, S, and K in the samples after leaching treatment, which were 95.28%, 98.39%, 98.88%, and 97.82%, respectively. The SEM characterization results showed that the sediment dissolved and disappeared on the surface of the carrier and in the pores. At the same time, the inductively coupled plasma emission spectroscopy (ICP-OES) method was used for determination, and the spectral lines of each element (V 309.311, Na 589.490, K 766.490, S180.731, Al 394.401, Fe238.204, As 189.042) were determined. The results showed that the mass concentration of each element was linear with emission intensity within a certain range, and the linear correlation coefficient of the calibration working curve was greater than 0.9999, except for arsenic, which was 0.9997, The detection limit of each element is 0.004~0.017 ppm, and the relative deviation (RSD, n=11) of the determination results is 2.25% except for arsenic. All other elements are less than 0.9%, and the recovery rate of the added standard is between 98.89% and 101.75%. The accuracy and precision of the method can meet the requirements for testing various elements in industrial sulfuric acid waste catalysts, providing data reference for the content of each element in the leaching and separation process of waste catalysts.