| Acronym | Meaning |
| EGTA | Ethylene Glycol Bis(2-aminoethyl Ether)-N |
| SPE | Solar Proton Event |
| RO | Reverse Osmosis |
| PDI | Polydispersity Index |
| CBD | Citrate-bicarbonate-dithionite (sample Treatment In Soil Analysis) |
| ATDHF | Adiabatic Time-dependent Hartree-Fock |
| NTS | Nucleus Of The Solitary Tract |
| ECID | Electron Capture Induced Decomposition |
| NEDS | National Emission Data System (USEPA) |
| EGU | European Geosciences Union |