| Acronym | Meaning |
| DSMS | Depth-selective Moessbauer Spectroscopy |
| MES | Methyl Ester Sulfonates (surfactants) |
| RFB | Recycle Fluidized-bed |
| RSEW | Resistance Seam Welding |
| EIGA | European Industrial Gases Association |
| QCC | Quadrupole Coupling Constant |
| LBM | Laser Beam Machining |
| BMDL | Below Method Detection Level |
| SNIF | Site-specific Natural Isotope Fractionation |
| AOC | Administrative Order Of Consent |