Indicators suggest the amount of DOM in certain geographic wetlands has been increasing for several decades. Climate Change has been proposed as a potential contributor to the trend, and under this mechanism, the phenolic content of DOM may be experiencing a disproportionally large increase. We explored the possibility of assessing the phenolic character of DOM using multidimensional fluorescence spectroscopy as a more convenient alternative to �wet chemistry� methods. In this work, parallel factor analysis (PARAFAC) was applied to fluorescence excitation-emission matrices (EEMs) of humic samples in an attempt to analyze their phenolics.  PARAFAC results were correlated with phenol concentrations derived from the Folin-Ciocalteau reagent-based method. Results of the study show the potential for PARAFAC analysis of multidimensional fluorescence data to be a tool for monitoring phenolics in DOM.  Results are presented for the analysis of International Humic Substance Society standards and natural water samples.

Analytical measurements the phenolic composition of dissolved organic matter in wetlands

243rd National Meeting (2012)

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