| Acronym | Meaning |
| FEE | Field Electron Energy |
| BIFL | Burst Integrated Fluorescence Lifetime |
| AU | Absorbance Units |
| INDO/2-AHP | INDO/2-average Hole Potential |
| AISIT | Automatic Intelligent Sampler For Inorganic Trace Constituents |
| AIEMP | Ab Initio Environment Model Potential |
| PLL | Phase Locked Loop |
| FFPC | Forced-flow Planar Chromatog. |
| ARAS | Atomic Resonance Absorption Spectroscopy |
| MCRHF | Multiconfigurational Relativistic Hartree-Fock |