Assessing the trihalomethane formation potential of aquatic fulvic and humic acids fractionated using thin-layer chromatography

Journal of Chromatography. a
Mohamed Y Z Aboul Eish, Martha J M Wells

Abstract

The significance of this research is the application of thin-layer chromatography (TLC) to fractionate well-characterized aquatic humic materials coupled with the novel evaluation of the trihalomethane formation potential (THMFP) of the fractionated materials. Disinfection by-products such as trihalomethanes (THMs) form when natural water is treated by chlorination. Nordic Aquatic and Suwannee River fulvic and humic acids, obtained from the International Humic Substances Society, were prepared at pH 6 and 9 and fractionated on silica gel plates using a mobile phase consisting of methanol and ethyl acetate (2:1, v:v). Based on retention factor (R(f)) values, three common fractions were identified in all substances examined. Additionally, other fractions were noted that were characteristic of specific humic substances. Each of the three primary fractions derived from Nordic Aquatic fulvic acid at pH 6 demonstrated the potential to contribute to formation of THMs. This research provides data to support the hypothesis that differences in the chemical structure and composition of natural organic matter (NOM) significantly affect the potential to react with chlorine to form THMs.

Citations

Aug 21, 2013·Journal of Hazardous Materials·Maoni N WuXiaoyan Y Ma
Apr 8, 2015·The Science of the Total Environment·Mohamed Y Z Abouleish, Martha J M Wells
Apr 11, 2007·Journal of Chromatography. a·A Serrano, M Gallego
Jan 29, 2019·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Enue E Sicairos-RuelasKelly R Bright

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