| Acronym | Meaning |
| SCOP | Spherical Complex Optical Potential (in Quantum Calcn. On Mol. Scattering) |
| RSCPA | Reduced (second Order) Self-consistent Phonon Approxn. (a Green-function Calcn. Method) |
| CDOM | Chromophoric Dissolved Organic Matter |
| GAC | Granular Activated Carbon |
| BS | Breathing Sphere (approxn. In Mol.-scattering Calcns.) |
| PDF | Pair Distribution Function |
| LSCM | Laser Scanning Confocal Microscopy |
| AMS | Accelerator Mass Spectrometry Or Spectroscopy |
| GSZ | Green-Sellin-Zachor Model Potential (for Atoms) |
| ABO | Antibonding Bond Orbital |