1 Method Summary
The sample is digested with aqua regia, and the determination is performed with air‑acetylene flame at the wavelength of 324.7 nm.
2 Scope of Application
This method is used for the determination of copper in graphite powder.
3 Reference Standard
GB/T 24533-2009
4 Testing Instruments
· Flame Atomic Absorption Spectrophotometer 1 unit Copper hollow cathode lamp
