GB/T 34500.4-2017 "Methods for chemical analysis of rare earth waste residues and wastewater, Part 4: Determination of copper, zinc, lead, chromium, cadmium, barium, cobalt, manganese, nickel, titanium content Inductance coupled plasma atomic emission spectroscopy (AES) method" stipulates the determination of the content of various metal elements in the leaching liquid and wastewater of rare earth waste residues generated in mining, beneficiation and smelting processes. This standard applies to the determination of copper, zinc, lead, chromium, cadmium, barium, cobalt, manganese, nickel, and titanium in rare earth waste residues and wastewater. It provides detailed steps and requirements for analysis by Inductance Coupled Plasma Atomic Emission Spectroscopy (AES) method (ICP-AES), and provides a technical basis for environment monitoring and pollution control.