Abstract

A rapid method for the estimation of organic carbon in natural waters which could be adapted to continuous measurement is needed to improve water quality monitoring. The fluorescent properties of natural organic molecules offer such a method. The fluorescence of natural waters from a variety of surface sources, using an excitation wavelength of 365 nm and emission wavelengths in the range 400–600 nm have been correlated with total organic carbon levels. The results are highly significant statistically and show that fluorescence can be used as a predictor of TOC over a wide range of concentrations.

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