| Natural dissolved organic matter(DOM) in aquatic systems plays an importantrole and has been a research focus in recent years, In the natural conditions, thedifferent characteristics of the dissolved organic matter mix, so that its influence toenvironment is more complicated to estimate.(1)Based on the three dimensional fluorescence spectrum, ultraviolet-visiblespectrum, combined and a variety of physical and chemical water quality parameters,the dissolved organic matter in the watershed of Liaohe River and in the Three Gorgesin summer and autumn were studied. The excitation-emission fluorescence matrices(EEMs) of water samples.(2)Study the sorption behavior between polycyclic aromatic hydrophobic (PAHs)organic compounds and DOM in sediments from different sources. By applyingfluorescence quenching method, find out the binding constant (Kdoc) of phenanthreneand DOM. In addition, we investigated the influence of mixing of binary DOMs onthe Kdoc. |
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