earticle

영어

Human activites significantly increase the input of organic pollutants. Although dissolved organic matter (DOM) are fundamentally important to the fate of hydrophobic organic compounds (HOCs), deep understanding of the adsorption mechanism of HOCs on water and sediment under the influence of DOM input is needed. Moreover, how the chemodiversity and diverse fractions of DOM affect HOCs sorption still unclear. The current study investigated the effects of different DOM sources on the sorption of HOCs in water and sediment. The sorption experiments demonstrated that DOM increased HOCs sorption amount of sediment, with the greatest and lowest enhancement on Leonardite humic acid and Suwannee river natural organic mater, respectively. The average apparent sorption coefficient (KBC-water, mL/g) of Leonardite humic acid and Suwannee river natural organic mater were (2.5 x 108 mL/g) and (1.0 x 108 mL/g), respectively. Nevertheless, the mechanism was differentiated accordingly to the DOM fractions in term of increased humic and fulvic acid-like content and decreased protein-like content. Futhermore, the characteristic of DOM before and after sorption were figured out but SUVA254 and 3D fluorescence matrix EEM-FRI. The correlation between the reduction in total volume from EEM FIR results and the increasing of the apparent sorption coefficient (KBC-water, mL/g) was observed To apply this hypothesis to the real case, DOM from three water sources (groundwater, tap water and wastewater) and two DOM from two sediments (Andong dam and Hyeonsan river) were utilized to carry out the effect of DOM fractions on HOCs sorption.