GB/T 4698.4-2017 "Methods for chemical analysis of titanium sponge, titanium and titanium alloys, Part 4: Determination of manganese content, periodate Spectrophotometric method, spec-trophotometry and Inductance coupled plasma atomic emission spectroscopy (AES) method" stipulates the determination method of manganese content in sponge titanium, titanium and titanium alloys, which is suitable for the determination of manganese content in 0.005% to 3.00%. The standard provides two methods of periodate Spectrophotometric method, spec-trophotometry and Inductance coupled plasma atomic emission spectroscopy (AES) method, detailing Sample Handling and interference elimination measures, which are suitable for mass detection and arbitration analysis of related materials.