Abstract:Aqua regia digestion-inductively coupled plasma atomic emission spectrometry (ICP-AES) was used to simultaneously determine 9 heavy metal elements Cu, Zn, Cd, Pb, Cr, Be, Ba, As and Ni in the industrial salt of hazardous waste produced in the production process of xinjun’an. The effects of solid-liquid ratio, extraction time and extraction temperature on the leaching concentration of heavy metals were studied, and the standard curves were established by high salt matrix together with heavy metal elements to eliminate matrix interference. The 9 heavy elements had good linearity in the detection ranges with correlation coefficients more than 0.999, and the detection limits of the method were 0.0001～0.03 mg/L. The relative standard deviations RSDs of the results were 0.20%～1.84% , and the recoveries of standard addition were 93.0%～104.6%. The method has the advantages of simple operation, rapid determination, accurate results and low detection limit which meet the measurement requirements. It is applicable to the leaching toxicity analysis of 9 heavy metal elements in high salt hazardous wastes.