Author: Sezen KÜÇÜKÇONGAR, Mehmet Faik SEVİMLİ, Esra YEL
Publishing Date: 2012
ISSN: 1300-5200
E-ISSN: 1304-8708
Volume: 27 Issue: 2
ABSTRACT:
Natural organic matter (NOM) in surface waters and ground waters are heterogeneous compositions as a result of complex reactions. Approximately 90% of NOM is dissolved form in waters and aquatic humic matter (AHM) is the highest fraction of dissolved organic matter (DOM). The first of the main reasons for increased interest of AHM’s in water resources studies is the formation of disinfection by-products (trihalomethanes, halo acetic acids etc.) that are harmful for human health reacting with different oxidant and disinfectant used in drinking water treatment. The second reason is formation complex with organic and inorganic pollutants or sorption for transportation in water.
There are many different methods for isolation of AHM’s from waters. Resin adsorption chromatography (RAC) technique used different resins, is a method widely used for the removal of AHMs from waters and to concentrate of AHMs.
In this study, RAC method with using Amberlite XAD-8, Bio-Rad AG-MP-50 and Duolite A-7 resins was applied for fractionation of DOM in water. Resins were cleaned and conditioned with according to methods and modifications in the literature. RAC method was applied to different surface water samples and six different fractions were obtained according to the hydrophobic and hydrophilic properties for each water sample. Percentage distributions of these fractions of these fractions were determined for different surface water sources.
Key Words: Natural organic matter; fractionation; resin adsorption chromatography.