GB/T 4698.24-2017 Methods for chemical analysis of titanium, titanium and titanium alloys in sponges - Part 24: Determination of nickel content - Spectrophotometric method, spectra-trophotometry and Inductance-coupled plasma atomic emission spectroscopy (AES) method specifies methods for the determination of nickel content in titanium, titanium and titanium alloys in sponges. This standard provides two methods: Spectrophotometric method, spectra-trophotometry, for the determination of nickel content from 0.10% to 2.00%; Inductance-coupled plasma emission Light spectrum method, for the determination of nickel content from 0.010% to 2.00%. In addition, an arbitration analysis method is also included. The standard describes in detail the sample processing process and required reagents, and is suitable for quality control and testing of related materials.