| Acronym | Meaning |
| ADA | N-(2-acetamido) Iminodiacetic Acid |
| ESA | Electrokinetic Sonic Amplitude |
| WPCF | Water Pollution Control Federation |
| CIR | Cylindrical Internal Reflection |
| NGWA | National Ground Water Association |
| OCS | Outer Continental Shelf |
| LPFF | Laser Photolysis Fragment Fluorescence |
| FFP | Femtosecond Flash Photolysis |
| PIERS | Polarized Infrared External Reflection Spectroscopy |
| PEOE | Partial Equalization Of Orbital Electronegativity (model) |