YB/T 4217.3-2010 "Hot-dip galvanized (aluminum-zinc) steel plate platings. Determination of lead and cadmium content. Inductance-coupled plasma emission Light spectrum method" specifies the principle, scope of application, analytical procedures and results calculation method for the determination of lead and cadmium content in hot-dip galvanized (aluminum-zinc) steel plate platings by Inductance-coupled plasma emission Light spectrum method. This standard applies to hot-dip galvanized (aluminum-zinc) steel plate platings with lead and cadmium content determination ranges from 5.0 μg/g to 1000 μg/g. During the analysis process, the coated platings are disbonded and digested by acid treatment to obtain the solution to be tested, and then the lead and cadmium content in the sample is measured using an Inductance Coupled Plasma Emission Light Spectrometer. This standard refers to the "Specifications and Test Methods for Water in Analytical Laboratories" (GB/T 6682) and "Numerical Revision Rules" (GB/T 8170) to ensure the accuracy and Reliability of the analysis process.