| Acronym | Meaning |
| HRELS | High-resolution Electron Energy-loss Spectroscopy |
| PIS | Penning Ionization Spectroscopy |
| CDOM | Colored Dissolved Organic Matter |
| MSWLF | Municipal Solid Waste Landfill |
| SWTR | Surface Water Treatment Rule |
| ESD | Element-Specific Detector |
| TESS | Triboelectrostatic Separation |
| SEMPA | Scanning Electron Microscopy With Polarization Analysis |
| SIMS | Surface Impoundment Modeling System |
| FBL | Fixed Bed Loop |