چكيده لاتين :
Photooxidation is an important process in the degradation of petroleum spilled in the marine environment.
Most crude oils spilled at sea spread rapidly to form slicks with greatly increased surface area. Thus, a
fundamental understanding of the effect of photooxidation on oil is a prerequisite for providing an accurate
description of the recent history and potential fate of oil spilled in a marine environment. The present work
describes a reliable method for evolution and studies the nature of the photoproducts and composition of
the residual hydrocarbons of an oil film over the seawater. The maltenic fraction of Iranian oil was exposed
to sunlight with simulated natural conditions as a film of oil over seawater . The effect of ultraviolet
illumination on using a variety of techniques including GC/MS and FT-IR was examined. The saturated
hydrocarbons were very resistant, but the aromatic hydrocarbons were particularly sensitive to
photochemical degradation . Greater size and increasing alkyl substitution increased the sensitivity of
aromatic compounds to photooxidation.
