Fig. 6. Correlations between intensities at four different wavelengths from synchronous fluorescence spectra for mixtures with known amounts of both the Suwannee River fulvic acid sample (SRF) and the unfractionated dissolved organic carbon sample from a tertiary wastewater treatment plant (MWW) (dissolved organic carbon [DOC] of all analyzed solutions equaled 1 mg/L; pH = 3; inner-filter correction applied).

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