| Acronym | Meaning |
| PEC | Predicted Environmental Concentration |
| SCCM | Self-consistent Cell Model |
| HASL | Hypothetical Active Site Lattice |
| MINI-N | Minimal-type Contracted Gto Basis Set (n= 1 |
| NIA | National Institute On Aging |
| PICI | Positive-ion Chemical Ionization |
| FV-CAS-SCF | Full Valence-complete Active Space-SCF |
| ASM | Activated-sludge Model |
| OPIA | Optical Precision Instrument Associates |
| HDF | Human Diploid Fibroblast |