Oxidation of bilayer of labelled DPPC by aqueous hydroxyl radical – elucidating a mechanism for atmospheric science

DOI

Oxidation of atmospheric aerosol can produce cloud condensation nuclei capable of changing the reflectivity and lifetime of clouds. The oxidation of organic film on atmospheric mineral dust may activate mineral dust into cloud droplets. To assess the atmospheric importance the chemical lifetime of the organic material to a common atmospheric oxidant (OH radical) must be measured and compared to deposition lifetime of the mineral aerosol (4-10 days). The chemical lifetime will be assessed by measuring the rate of oxidation of a bilayer of a lipid DPPC from the solid-liquid interface of a silica mineral window, using neutron reflection. Selective deuteration, the ability to measure film thickness and amount of material at the solid-liquid interface will allow chemical mechanism to be deduced. Preliminary studies show the experiment viable, and these data are needed for publication.

Identifier
DOI https://doi.org/10.5286/ISIS.E.84763411
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/84763411
Provenance
Creator Professor Martin King; Dr Rebecca Welbourn; Dr Katherine Thompson; Dr Christy Kinane; Miss Rosalie Shepherd; Dr Andy Ward; Professor Adrian Rennie; Mr Tobias Robson
Publisher ISIS Neutron and Muon Source
Publication Year 2020
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Representation
Resource Type Dataset
Discipline Chemistry; Natural Sciences
Temporal Coverage Begin 2017-03-28T07:00:00Z
Temporal Coverage End 2017-03-31T07:00:00Z