Rapid Fractionation of Natural Organic Matter in Water Using a Novel Solid Phase Extraction Technique
Abstract:This paper introduces a novel natural organic matter (NOM) fractionation technique using a series of solid phase extraction cartridges. The new technique requires only 6 hours of fractionation time, which is much faster than traditional fractionation techniques (24 hours). Three Bond Elute® ENV cartridges, one Strata™X-C cartridge, and one Strata™X-AW cartridge were used in series to fractionate NOM from Suwannee River, GA (SRNOM) and Red River, MN (RRNOM) into six fractions: hydrophobic acid, hydrophobic base, hydrophobic neutral, hydrophilic acid, hydrophilic base, and hydrophilic neutral. Hydrophobic acid was a major fraction accounted for 66–70% and 36% of SRNOM and RRNOM, respectively. The NOM fractions obtained from the developed method were characterized using Fourier transformed infrared spectroscopy and 13C nuclear magnetic resonance. An application of this new technique was demonstrated by using it to investigate the effectiveness of water treatment processes in removing different NOM fractions.
Document Type: Research Article
Publication date: January 1, 2008
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