| Acronym | Meaning |
| BI | Bond Increment (method In Calcns. On Large Molecules) |
| APLI | Atmospheric Pressure Laser Ionization |
| EMBL | European Molecular Biology Laboratory |
| QIT | Quadrupole Ion Trap |
| GPD | Gaussian Phase Distribution |
| RCRIS | Resource Conservation And Recovery Information System |
| ADW | Asymptotic Distorted Wave |
| QAMB | Quality Assurance Materials Bank (USEPA) |
| CTB | Computer Technology Branch |
| SXPS | Soft X-ray Photoelectron Spectroscopy |