| Acronym | Meaning |
| BJT | Bipolar Junction Transistors |
| PAG | Periaqueductal Gray |
| PPE | Porcine Pancreatic Elastase |
| ADP | Auger Depth Profiling |
| ITFM | Intergovernmental Task Force On Monitoring |
| ICP-OES | Inductively Coupled Plasma-optical Emission Spectroscopy |
| QSM | Quantum Shell Model |
| CSP | Cathodic Stripping Potentiometry |
| LCI-CNDO | Limited Configuration Interaction-complete Neglect Of Differential Overlap |
| ORAQI | Oak Ridge Air Quality Index |