| Acronym | Meaning |
| EIH | Electron Ion Hybrid |
| LEO | Low Earth Orbit |
| CMBR | Completely Mixed Batch Reactor |
| HAP | Hazardous Air Pollutants |
| PERCI | Photoelectron Resonance Capture Ionization |
| ELSA | Emergency Level Scale Assessment |
| OEAO | Overlap Enhanced Atomic Orbital |
| GAC | Granular Activated Carbon |
| GIRMS | Gas Isotope Ratio Mass Spectrometry |
| MAE | Microwave-assisted Extraction |