Extinction efficiencies of coated absorbing aerosols measured by cavity ring down aerosol spectrometry
Item
Title (Dublin Core)
Extinction efficiencies of coated absorbing aerosols measured by cavity ring down aerosol spectrometry
Description (Dublin Core)
In this study, we measure the extinction efficiency at 532 nm of absorbing aerosol particles coated with a non-absorbing solid and liquid organic shell with coating thickness varying between 5 and 100 nm using cavity ring down aerosol spectrometry. For this purpose, we use nigrosin, an organic black dye, as a model absorbing core and two non-absorbing organic substances as shells, glutaric acid (GA) and Di-Ethyl-Hexyl-Sebacate (DEHS). The measured behavior of the coated particles is consistent with Mie calculations of core-shell particles. Errors between measured and calculated values for nigrosin coated with GA and DEHS are between 0.5% and 10.5% and between 0.5% and 9%, respectively. However, it is evident that the calculations are in better agreement with the measured results for thinner coatings. Possible reasons for these discrepancies are discussed.
Creator (Dublin Core)
Abo Riziq, A.
Trainic, M.
Erlick, C.
Segre, E.
Rudich, Y.
Date (Dublin Core)
2018-01-15
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-8-1823-2008
https://acp.copernicus.org/articles/8/1823/2008/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
