Berndt , T , Scholz , W , Mentler , B , Fischer , L , Herrmann , H , Kulmala , M & Hansel , A 2018 , ' Accretion Product Formation from Self- and Cross-Reactions of RO2 Radicals in the Atmosphere ' , Angewandte Chemie (International Edition) , vol. 57 , no. 14 , pp. 3820-3824 . https://doi.org/10.1002/anie.201710989
Title: | Accretion Product Formation from Self- and Cross-Reactions of RO2 Radicals in the Atmosphere |
Author: | Berndt, Torsten; Scholz, Wiebke; Mentler, Bernhard; Fischer, Lukas; Herrmann, Hartmut; Kulmala, Markku; Hansel, Armin |
Contributor organization: | Department of Physics |
Date: | 2018-03-26 |
Language: | eng |
Number of pages: | 5 |
Belongs to series: | Angewandte Chemie (International Edition) |
ISSN: | 1433-7851 |
DOI: | https://doi.org/10.1002/anie.201710989 |
URI: | http://hdl.handle.net/10138/325745 |
Abstract: | Hydrocarbons are emitted into the Earth's atmosphere in very large quantities by human and biogenic activities. Their atmospheric oxidation processes almost exclusively yield RO2 radicals as reactive intermediates whose atmospheric fate is not yet fully unraveled. Herein, we show that gas-phase reactions of two RO2 radicals produce accretion products composed of the carbon backbone of both reactants. The rates for accretion product formation are very high for RO2 radicals bearing functional groups, competing with those of the corresponding reactions with NO and HO2. This pathway, which has not yet been considered in the modelling of atmospheric processes, can be important, or even dominant, for the fate of RO2 radicals in all areas of the atmosphere. Moreover, the vapor pressure of the formed accretion products can be remarkably low, characterizing them as an effective source for the secondary organic aerosol. |
Subject: |
accretion products
atmospheric chemistry mass spectrometry radical reactions SECONDARY ORGANIC AEROSOL GAS-PHASE OZONOLYSIS PEROXY-RADICALS OXIDATION KINETICS AIR AUTOXIDATION PHOTOLYSIS MECHANISM YIELDS 116 Chemical sciences 114 Physical sciences |
Peer reviewed: | Yes |
Rights: | unspecified |
Usage restriction: | openAccess |
Self-archived version: | acceptedVersion |
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