Resolving the variability in dissolved organic matter fluorescence in a temperate estuary and its catchment using PARAFAC analysis

2005/03/01 by Colin A. Stedmon, Stiig Markager · 1,179 citations
Chemistry · Earth and Planetary Sciences · Environmental Science · #Air Quality Monitoring and Forecasting #Biology #Chemistry #Chromatography #Dissolved organic carbon #Drainage basin #Ecology #Environmental chemistry #Environmental science #Estuary #Fluorescence #Fluorescence spectrometry #Fluorescence spectroscopy #Fraction (chemistry) #Geography #Geology #Marine and coastal ecosystems #Oceanography #Organic matter #Sampling (signal processing) #TRACER #Temperate climate #Water Quality Monitoring and Analysis

paper · pdf · doi:10.4319/lo.2005.50.2.0686

published in Limnology and Oceanography 50(2), 686-697 (Wiley)

openalex publication_date 2005/03/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

Excitation emission matrix fluorescence spectroscopy combined with PARAFAC analysis provides a fast and effective method of characterizing the fluorescent fraction of dissolved organic matter (DOM). Fluorescence measurements can be used as a tracer for quantitative and qualitative changes occurring in the DOM pool as a whole. An earlier study found that the fluorescence signal could be modeled by five fractions. This study presents an analysis on a considerably larger data set (>1,200 samples) resulting from a 1-yr sampling program in Horsens Estuary, Denmark. Eight fluorescent fractions were identified. Four biogenic terrestrial, two anthropogenic, and two protein-like fractions were identified. Analysis of covariation between the components identified source-specific fractions and the presence of common factors controlling the composition of terrestrial DOM exported from different catchments.

Citations

• Spectrofluorometric characterization of dissolved organic matter for indication of precursor organic material and aromaticity

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