GB/T 13747.20-2017 "Methods for chemical analysis of zirconium and zirconium alloys, Part 20: Determination of hafnium content Inductance coupled plasma atomic emission spectroscopy (AES) method" specifies the method for the determination of hafnium content in zirconium and zirconium alloys using Inductance coupled plasma atomic emission spectroscopy (AES) method (ICP-AES), which is applicable in the range of 0.0050% to 5.00%. The standard describes the acid dissolving steps and determination methods of the sample in detail, and provides specific operations for calculating the hafnium content by working Linear dispersion method. It provides a standardized detection method for compositional analysis and quality control of related materials.