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Comprehensive approach to preparative isolation and fractionation of dissolved organic carbon from natural waters and wastewaters



Comprehensive approach to preparative isolation and fractionation of dissolved organic carbon from natural waters and wastewaters



Environmental Science & Technology 15(5): 578-587



A series of resin adsorbents were used to isolate complex mixtures of organic solutes from water and inorganic salts and to fractionate these solutes into 6 compound classes. A multistep separation scheme, called preparative dissolved organic C fractionation, recovered 95% of dissolved organic Ca from the resin adsorbents for an oil-shale retort wastewater and 115% for a river water. After further evaporative concentration and desalting procedures were used on the organic-solute fractions obtained from the resin adsorbents, 81% of dissolved organic C was recovered from each sample. Organic-solute fractions of the river water samples were characterized by IR spectra that indicated a dissolved organic C fractionation into fulvic acid, hydrocarbon, protein, hydroxy acid and polysaccharide compound classes. Preparative dissolved organic C fractionation could be used as a basis for quantitative and qualitative organic analysis of water and to generate organic-solute fractions for chemical and biological testing.

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Accession: 052269991

Download citation: RISBibTeXText

PMID: 22283952

DOI: 10.1021/es00087a010


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