| Acronym | Meaning |
| HDM | Humic Degradation Matter |
| EDS | Energy-dispersive Spectrometry |
| PKD | Protein Kinase D |
| MIES | Metastable Impact Electron Spectroscopy |
| CFHH-GLF | CFHH-generalized Laguerre Function |
| HMSA | Hybrid Mean Spherical Approximation |
| NTN | National Trends Network |
| TRXF | Total Reflection X-ray Fluorescence |
| HPTLC | High-Performance Thin-Layer Chromatography |
| VLWIR | Very Long Wavelength IR |