Environmental Processing of Lipids Driven by Aqueous Photochemistry of α-Keto Acids.
ACS Cent Sci
; 4(5): 624-630, 2018 May 23.
Article
em En
| MEDLINE
| ID: mdl-29806009
ABSTRACT
Sunlight can initiate photochemical reactions of organic molecules though direct photolysis, photosensitization, and indirect processes, often leading to complex radical chemistry that can increase molecular complexity in the environment. α-Keto acids act as photoinitiators for organic species that are not themselves photoactive. Here, we demonstrate this capability through the reaction of two α-keto acids, pyruvic acid and 2-oxooctanoic acid, with a series of fatty acids and fatty alcohols. We show for five different cases that a cross-product between the photoinitiated α-keto acid and non-photoactive species is formed during photolysis in aqueous solution. Fatty acids and alcohols are relatively unreactive species, which suggests that α-keto acids are able to act as radical initiators for many atmospherically relevant molecules found in the sea surface microlayer and on atmospheric aerosol particles.
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MEDLINE
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article