| Acronym | Meaning |
| AS | Activated Sludge |
| TSA | Thermal Swing Adsorption |
| ICEAS | Intermittent Cycle Extended Aeration System (activated Sludge) |
| PAHO | Pan American Health Organization |
| CBF | Cerebral Blood Flow |
| AESA | Association Of Environmental Scientists And Administrators |
| AL:PE | Acidification Of Mountain Lakes: Paleolimnol. And Ecol. |
| DTDA | Differential Thermal Desorption Analysis |
| EKC | Electrokinetic Chromatography |
| BRS | Biennial Reporting System |