The partitioning kinetics of various PAHs in crude oil was examined in response to a variety of environmental factors such as salinity and light exposure. Crude oil from Jay, FL was added to water and exposed to various treatments. Water and remaining oil fractions were extracted to quantify total PAH (primarily naphthalene, phenanthrene and chrysene) partitioning within the samples. Samples exposed over a 3-day interval showed increasing naphthalene concentration in the water fraction while chrysene showed a decrease. Concentrations of phenanthrene in the residual oil showed a steady decrease over time. The total concentration of naphthalene and phenanthrene extracted from both the oil and water fractions did not significantly change compared to the original unaltered oil. Total chrysene showed a slight loss over time. The effects of longer and varied wavelength light exposure as well as salinity effects on partitioning kinetics will also be discussed.

Photodegradation and salinity effects on crude oil PAH partitioning kinetics

245th National Meeting (2013)

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