d_pretreatment_so
| CODE | DESCRIPTION | CATEGORY | FROM_YEAR | TO_YEAR |
|---|---|---|---|---|
| PA01 | Extraction H2O | Extraction methods | 1984 | |
| PA02 | Extraction CaCl2 | Extraction methods | 1984 | |
| PA03 | Extraction single BaCl2 | Extraction methods | 1984 | |
| PA04 | Extraction triple BaCl2 | Extraction methods | 1984 | |
| PA05 | Extraction with Acid Ammonium Oxalate | Extraction methods | 1984 | |
| PA99 | Other extraction method | Extraction methods | 1984 | |
| PB01 | Aqua regia (HCl/HNO3, 3/1) extract | Digestion methods (open system) | 1984 | |
| PB08 | Modified Kjeldahl H2SO4 with Ti/Cu catalyst | Digestion methods (open system) | 1984 | |
| PB09 | Total digestion with HF/HClO4 | Digestion methods (open system) | 1984 | |
| PB10 | Total digestion with LiBO2 | Digestion methods (open system) | 1984 | |
| PB99 | Other digestion method (open system) | Digestion methods (open system) | 1984 | |
| PC03 | Pressure digestion HNO3/HF (total digestion) | Pressure digestion methods | 1984 | |
| PC99 | Other pressure digestion method | Pressure digestion methods | 1984 | |
| PD05 | Microwave pressure digestion HNO3/HF (total digestion) | Microwave pressure digestion methods | 1984 | |
| PD99 | Other microwave pressure digestion method | Microwave pressure digestion methods | 1984 | |
| PZ01 | Material melted and formed (tablet) for XRF methods | Other methods | 1984 | |
| PZ02 | Material pressed (pellet) for XRF methods | Other methods | 1984 | |
| PZ98 | No pretreatment | Other methods | 1984 | |
| PZ99 | Pretreatment method not in this list | Other methods | 1984 |