| Acronym | Meaning |
| CNAEL | Committee On National Accreditation Of Environmental Laboratories (US EPA) |
| AUHF | Annihilated Unrestricted Hartree-Fock Method |
| DWRD | Drinking Water Research Division (EPA) |
| MAP | Magnesium Ammonium Phosphate |
| APS | Adiabatic Pseudopotential |
| PAMPA | Parallel Artificial Membrane Permeation Assay |
| NCAP | Noncriteria Air Pollutants |
| PAECE | Protective Action Evaluator For Chemical Emergencies |
| ERRIS | Emergency And Remedial Response Information System |
| DTGF | Double-time Green Function |