44 samples were analyzed for copper and nickel using Atomic Absorption Spectroscopy after HCl:HNO3 (3:1) acid digestion. 44 samples were analyzed for chromium using Atomic Absorption Spectroscopy after HF-HNO3-HClO4 acid digestion with HCl leach.
Summary
44 samples were analyzed for copper and nickel using Atomic Absorption Spectroscopy after HCl:HNO3 (3:1) acid digestion. 44 samples were analyzed for chromium using Atomic Absorption Spectroscopy after HF-HNO3-HClO4 acid digestion with HCl leach.