Hydrophobic organic pollutants (HOPs) with a log KOW (octanol/water partition coefficient) of &gt;5 have the ability to sorb to dissolved organic matter (DOM). This process can enhance the solubility as well as the decreased uptake to biota (i.e., less bioavailability) of HOPs. It has been shown that log KDOM (HOP/DOM partition coefficient) for a particular HOP will vary in different natural waters with different DOM present. Perylene a less toxic polyaromatic hydrocarbon has been developed to be an excellent HOP probe to characterize the ability of DOM to attenuate contamination in different runoff waters. The objective of this paper is to see if we could consider using Perlyene as a probe to study the effects of drinking water treatment on its ability to attenuation HOPs present by measuring its sorption after drinking water processes. Then, this method could be used to determine the potential free hazardous HOP that would be present in any drinking water source and how the drinking water treatment would effect DOMs ability to attenuate it. As an application of this method, the sorption of Perylene to two drinking water sources of 1-3 mgC/L TOC was followed through treatment. Each drinking water source attenuated the Perylene probe differently, once again showing that treatment of drinking water is a site specific depending on the NOM present for disinfection byproducts as well as for it ability to sorb HOPs.

Understanding DOM-organic contaminant attenuation of non-polar organic pollutants

253rd National Meeting (2017)

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