| Acronym | Meaning |
| ATD | Atmospheric Technology Division |
| EIQ | Emission Inventory Questionnaire |
| SEDM | Selective Excitation Double Moessbauer |
| CLF | Current Literature File |
| SRXFA | Synchrotron Radiation X-ray Fluorescence Analysis |
| BEEM | Ballistic Electron Emission Microscopy |
| PHF | Perturbative Hartree-Fock |
| BIRD | Blackbody Infrared Radiative Dissociation |
| VMD | Volumetric Mean Diameter (particulate Air Pollution) |
| PMLG | Phase Modulated Lee-Goldburg (NMR Spectrometry) |