1 Method Summary
Wet digestion: dissolve the sample with hydrochloric acid, nitric acid and hydrogen peroxide. Determine at 283.3 nm using air‑acetylene neutral flame.
2 Scope
Applicable to the determination of lead in aluminum alloys.
3 Reference Standard
GB 20975
3 Test Instruments
· Flame Atomic Absorption Spectrophotometer 1 set – Lead hollow cathode lamp
· Acetylene 1 cylinder Purity ≥99.99%
· Air Compressor 1 set Rated discharge pressure: 0.3 MPa
