Photo-oxidation of pinonaldehyde at low NOx: from chemistry to organic aerosol formation
Item
Title (Dublin Core)
Photo-oxidation of pinonaldehyde at low NOx: from chemistry to organic aerosol formation
Description (Dublin Core)
Pinonaldehyde oxidation by OH radicals under low-NO<sub>x</sub> conditions produces significant secondary organic aerosol (SOA) mass yields. Under concurrent UV illumination, mass yields are lower than high-NO<sub>x</sub> yields published earlier by our group. However, when OH radicals are produced via dark ozonolysis the SOA mass yields are comparable at high and low NO<sub>x</sub>. Because pinonaldehyde is a major first-generation gas-phase product of α-pinene oxidation by either ozone or OH radicals, its potential to form SOA serves as a molecular counterpoint to bulk SOA aging experiments involving SOA formed from α-pinene. Both the general tendency for aging reactions to produce more SOA and the sensitivity of the low-NO<sub>x</sub> products to UV photolysis observed in the bulk clearly occur for this single species as well. Photochemical oxidation of pinonaldehye and analogous first-generation terpene oxidation products are potentially a significant source of additional SOA in biogenically influenced air masses.
Creator (Dublin Core)
Chacon-Madrid, H. J.
Henry, K. M.
Donahue, N. M.
Date (Dublin Core)
2018-01-15
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-13-3227-2013
https://acp.copernicus.org/articles/13/3227/2013/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
