Mechanical sample preparation
- Direct measurement
- Cryogenic grinding
Chemical sample preparation
- Microwave digestion
- Acid digestion
- Dry ashing
- Solvent extraction
- Accelerated solvent extraction (ASE)
Screening
- X-ray fluorescence XRF
- Laser ablation inductively coupled plasma mass spectrometry (LA ICP-MS)
Verification Procedures
- Gas chromatography – mass spectrometry (GC-MS)
- Alkaline digestion/ colorimetric method (UV-VIS)
- Spot-test procedure/ boiling water extraction procedure
- Inductively coupled plasma optical emission spectrometry (ICP-OES)
- Inductively coupled plasma mass spectrometry (ICP-MS)