| Acronym | Meaning |
| PWG SCF | Plane-wave Gaussian Self-consistent Field Method |
| SEGH | Society For Environmental Geochemistry And Health |
| MOA | Maximum Overlap Approximation |
| AIST | Agency Of Industrial Science And Technology (Japan) |
| GSD | Geometric Std. Deviation |
| AHP | Average Hole-potential (method For Electronic-structure Calcns. On Mols.) |
| SUVA | Specific UV Absorbance |
| FSMRCC | Fock Space Multireference Coupled Cluster |
| TCR | Total Chlorine Residual |
| XRF | X-ray Fluorescence |