| Acronym | Meaning |
| FRAT | Free Radical Assay Technique |
| IGCP | International Geological Correlation Program |
| EPEN | Empirical Potential (based On Interaction Of) Electrons (and) Nuclei |
| AEA-MO | All-electron Approxn.-mol. Orbital |
| NIES | National Institute For Environmental Studies (Japan) |
| NCEH | National Center For Environmental Health |
| SEAMOS | Single-excitations-adapted Molecular Orbitals |
| CWTC | Chemical Waste Transportation Council |
| SEXAFS | Surface-extended X-ray Absorption Fine Structure |
| P-A TEST | Presence-absence Test |