| Acronym | Meaning |
| IRMS | Isotope Ratio Mass Spectrometry |
| EINECS | European Inventory Of Existing Commercial Chemical Substances |
| GPC | Gel Permeation Chromatography |
| EMS | Ethyl Methanesulfonate |
| NTIS | National Technical Information Service |
| MFA | Molecular-field Approximation |
| LEEP | Low-energy Solvent Extraction Process |
| TFE | Thermionic Fuel Element |
| CGA | Compressed Gas Association |
| GIWA | Global International Waters Assessment |