11 Notations
| Aγ | measured UV absorbance at 254 nm (dimensionless) |
| A254 | absorbance at 254 nm in units of inverse meters (L–1) |
| aγ | absorption coefficient (L-1) |
| C1, C2 | constants of integration (M/L3) |
| [DOC] | DOC concentration in units of milligrams per liter (mg/L) |
| k | first-order removal rate constant (T–1) |
| r | Path length (L) |
| SUVA254 | specific ultraviolet absorbance at 254 nm (dimensionless) |
| t | time since recharge event (T) |
| x(t) | DOC concentrations as a function of time, typically in micromoles per liter (M/L3) |