Transfer of Perfluorinated Compounds Formation Potentials to Sediments and Accumulation of their Transformation Products during Urban River Transport

Abstract

 Main objective of this study was to study on the behavior of perfluorinated carboxylates (PFCAs) and their formation potentilas (9 PFCA-FPs) during river transport where the main water source is treated wastewater. 9 PFCAs, 14 precursors and 9 PFCA-FPs were analyzed from wastewater (n=2), river water (n=35), and river sediment (n=7). A s a result, PFCA-FPs were remained in the treated wastewater and discharged to river. Formation of PFOA and PFHxA during river transport was suggested from the result of their loading increase and decrease of the corresponding formation potentials. Attempt on MRM analysis by LC-MS/MS for unknown fluorinated compounds resulted in detection of peaks which matches with the MRM condition of 5:2Ketone and 5:3FTCA and its occurrence in particulate-phase of river water and sediment indicated that 5:3FTCA was accumulated in the sediments in the surveyed river.