Aging of biogenic secondary organic aerosol via gas-phase OH radical reactions
نویسندگان
چکیده
منابع مشابه
Aging of biogenic secondary organic aerosol via gas-phase OH radical reactions.
The Multiple Chamber Aerosol Chemical Aging Study (MUCHACHAS) tested the hypothesis that hydroxyl radical (OH) aging significantly increases the concentration of first-generation biogenic secondary organic aerosol (SOA). OH is the dominant atmospheric oxidant, and MUCHACHAS employed environmental chambers of very different designs, using multiple OH sources to explore a range of chemical condit...
متن کاملCloud condensation nucleus activation properties of biogenic secondary organic aerosol
[1] Organic aerosols in general and secondary organic aerosol (SOA) in particular are known to contribute significantly to the atmospheric population of cloud condensation nuclei (CCN). However, current knowledge is limited with respect to the nature of this contribution. This study presents a series of experiments wherein the potential for biogenically derived SOA to act as CCN is explored. Fi...
متن کاملMultiphase reactions in secondary organic aerosol formation
Evaluation of the atmospheric significance of multiphase reactions in atmospheric secondary organic aerosol formation A. Gelencsér and Z. Varga Air Chemistry Group of the Hungarian Academy of Sciences, P.O. Box 158, H-8201 Veszprém, Hungary Department of Earth and Environmental Sciences, University of Veszprém, Egyetem u. 10, H-8200 Veszprém, Hungary Received: 4 May 2005 – Accepted: 19 May 2005...
متن کاملOH-initiated heterogeneous aging of highly oxidized organic aerosol.
The oxidative evolution ("aging") of organic species in the atmosphere is thought to have a major influence on the composition and properties of organic particulate matter but remains poorly understood, particularly for the most oxidized fraction of the aerosol. Here we measure the kinetics and products of the heterogeneous oxidation of highly oxidized organic aerosol, with an aim of better con...
متن کاملKinetic modeling of secondary organic aerosol formation: effects of particle- and gas-phase reactions of semivolatile products
The distinguishing mechanism of formation of secondary organic aerosol (SOA) is the partitioning of semivolatile hydrocarbon oxidation products between the gas and aerosol phases. While SOA formation is typically described in terms of partitioning only, the rate of formation and ultimate yield of SOA can also depend on the kinetics of both gasand aerosol-phase processes. We present a general eq...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2012
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1115186109