Fig. 3. Emission spectra (symbols) and Gaussian fit using Eq. [2] (lines) of the Suwannee River fulvic acid sample (SRF) and the unfractionated dissolved organic carbon sample from a tertiary wastewater treatment plant (MWW) (dissolved organic carbon = 1 mg/L; pH = 3; _Excit = 370 nm; inner-filter correction applied).