GB/T 39560.5-2021 is for the determination of substances in electrical and electronic products. It stipulates the use of AAS, AFS, ICP-OES and ICP-MS methods to determine the content of cadmium, lead, chromium in polymers and electronic parts, as well as cadmium and lead in metals. The standard details the sample pretreatment steps, such as the digestion of polymers and the dissolving method of metals. Clarify the test parameters and operating specifications of each instrument, as well as the data processing process. This provides a unified method for accurately detecting the content of these heavy metals in products, and helps the industry to control the environmental protection indicators of products. It is suitable for the production and Quality control of electrical and electronic products.