GB/T 26416.3-2010 belongs to the standard for chemical analysis of dysprosium ferroalloys, focusing on its third part. This part uses plasma emission Light spectrum method to determine the content of seven elements such as calcium and mg in dysprosium ferroalloys. The standard begins with a clear determination principle, puts forward requirements for equipment and reagents, and describes the whole process from sample collection, preparation to instrument measurement in detail, covering sample digestion, solution preparation, calibrated Linear dispersion drawing and measurement operations. With this standard, the content data of each element can be accurately obtained, providing key support for mass control of dysprosium ferroalloys, and promoting the standardization of detection in related industries.