Photochemical production of hydroxy radical (*OH) from petroleum water accommodated fractions

Various petroleum products leak into the environment through different mechanisms, and may include crude oil or refined motor oil. These compounds and their accompanying weathered by-products can be damaging to the environment. To help assess the impact of weathered petroleum products on the environment. this study investigates the formation of reactive oxygen species, such as hydroxy radical. Water accommodated fractions (WAFs) are samples of water mixed with either crude or moto, on and are used to mimic environmental conditions. Over time water soluble components of the oil separate into the water layer of the WAF. The water layer is mixed with a chemical probe (i.e. benzoic acid) and then irradiated using a solar simulator. The amount of p-hydroxybenzoic acid (formed from hydroxy radicals and benzoic acid) is measured by UV detection-HPLC to determine hydroxyl radical 
production rates.
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Abstract/Description: Various petroleum products leak into the environment through different mechanisms, and may include crude oil or refined motor oil. These compounds and their accompanying weathered by-products can be damaging to the environment. To help assess the impact of weathered petroleum products on the environment. this study investigates the formation of reactive oxygen species, such as hydroxy radical. Water accommodated fractions (WAFs) are samples of water mixed with either crude or moto, on and are used to mimic environmental conditions. Over time water soluble components of the oil separate into the water layer of the WAF. The water layer is mixed with a chemical probe (i.e. benzoic acid) and then irradiated using a solar simulator. The amount of p-hydroxybenzoic acid (formed from hydroxy radicals and benzoic acid) is measured by UV detection-HPLC to determine hydroxyl radical production rates.
Subject(s): the impact of weathered petroleum products on the environment
Undergraduate Research
Hydroxy radical (*OH)