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PHOTOOXIDATION OF A REFINED PETROLEUM OIL: INHIBITION BY β‐CAROTENE AND ROLE OF SINGLET OXYGEN
Author(s) -
Larson Richard A.,
Hunt Laura L.
Publication year - 1978
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1978.tb06968.x
Subject(s) - singlet oxygen , photochemistry , petroleum , quenching (fluorescence) , chemistry , oxygen , carotene , environmental chemistry , organic chemistry , fluorescence , optics , physics
— β‐Carotene, at concentrations 0.1 m M , inhibits the formation of hydroperoxides and other oxidation products in a refined petroleum oil exposed to Pyrex‐filtered UV. The effect appears to be due to 1 O 2 quenching. A mechanism incorporating 1 O 2 and radical processes is proposed as a model for environmental photooxidation of petroleum.