Fast Neutron Reflectometry for Study of Oxidation of Poly-Unsaturated Fatty Acids
Arachidonic acid (AA) is the most common unsaturated fatty acid in cellular membranes and recent evidence suggests that its increased intake may contribute to the rise in allergies in the Western World. AA will partition to the surface of aqueous droplets and thus be exposed to gas-phase atmospheric oxidants. The fast-kinetics capability of our newly commissioned MIMIK chamber will be exploited to study the oxidation of d8-AA which recently became commercially available. We will investigate its oxidative ageing in reaction with ozone and nitrogen oxides at the air-water interface for the first time. Development of fast kinetics is a distinct part of the ILL-based NEATNOx studentship. We propose the first kinetic study of a poly-unsaturated surfactant in a step towards a more realistic representation of atmospheric aerosols with multiple reactive sites. The experimental work in conjunction with the kinetic modelling interpretation will allow tentative extrapolation to atmospheric conditions. This research will showcase FIGARO as the premier instrument for fast kinetic studies and climate change science.
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PFRANG Christian; Richard A. Campbell; SEBASTIANI Federica and WATKINS Erik. (2013). Fast Neutron Reflectometry for Study of Oxidation of Poly-Unsaturated Fatty Acids. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-10-1233
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