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Rapid Fractionation of Natural Organic Matter in Water Using a Novel Solid‐Phase Extraction Technique
Author(s) -
Ratpukdi Thunyalux,
Rice James A.,
Chilom Gabriela,
Bezbaruah Achintya,
Khan Eakalak
Publication year - 2009
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143009x407302
Subject(s) - fractionation , cartridge , elution , solid phase extraction , chromatography , extraction (chemistry) , chemistry , fraction (chemistry) , dissolved organic carbon , natural organic matter , organic matter , environmental chemistry , materials science , organic chemistry , metallurgy
This paper introduces a novel natural organic matter (NOM) fractionation technique using solid‐phase extraction cartridges. The new technique requires only 6 hours of fractionation time, which is much faster than traditional fractionation techniques (24 hours). It uses three Bond Elute ENV cartridges (Varian, Inc., Lake Forest, California), one Strata X‐C cartridge (Phenomenex, Torrance, California), and one Strata X‐AW cartridge (Phenomenex) in series and was tested by using to fractionate NOM from Suwannee River, Georgia (SRNOM) and Red River, Minnesota (RRNOM). Hydrophobic acid was a major fraction and accounted for 66 to 70% and 36% of SRNOM and RRNOM, respectively. The NOM fractions obtained from the developed method were characterized using Fourier transformed infrared spectroscopy and 13 C nuclear magnetic resonance. The acid fractions of SRNOM mainly consisted of carboxylic acids. An application of this new technique was demonstrated by using it to investigate the effectiveness of water treatment processes in removing different NOM fractions.