TY  - JOUR
AU  - Donahue, N.M.
AU  - Henry, K.M.
AU  - Mentel, Th.F.
AU  - Kiendler-Scharr, A.
AU  - Spindler, C.
AU  - Bohn, B.
AU  - Brauers, Th.
AU  - Dorn, H.P.
AU  - Fuchs, H.
AU  - Tillmann, R.
AU  - Wahner, A.
AU  - Saathoff, H.
AU  - Naumann, K.-H.
AU  - Möhler, O.
AU  - Leisner, Th.
AU  - Müller, L.
AU  - Reinnig, M.-C.
AU  - Hoffmann, T.
AU  - Salo, K.
AU  - Hallquist, M.
AU  - Frosch, M.
AU  - Bilde, M.
AU  - Tritscher, T.
AU  - Barmet, P.
AU  - Paraplan, A.P.
AU  - DeCarlo, P.F.
AU  - Dommen, J.
AU  - Prevot, A.S.H.
AU  - Baltensperger, U.
TI  - Aging of biogenic secondary organic aerosol via gas-phase OH radical reactions
JO  - Proceedings of the National Academy of Sciences of the United States of America
VL  - 109
IS  - 34
SN  - 0027-8424
CY  - Washington, DC
PB  - Academy
M1  - PreJuSER-22392
SP  - 1-6
PY  - 2012
N1  - Record converted from VDB: 12.11.2012
AB  - 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 conditions and potential sources of systematic error. We isolated the effect of OH aging, confirming our hypothesis while observing corresponding changes in SOA properties. The mass increases are consistent with an existing gap between global SOA sources and those predicted in models, and can be described by a mechanism suitable for implementation in those models.
KW  - Aerosols: chemistry
KW  - Atmosphere
KW  - Biogenesis
KW  - Free Radicals
KW  - Hydroxyl Radical
KW  - Mass Spectrometry: methods
KW  - Models, Chemical
KW  - Organic Chemicals: chemistry
KW  - Oxygen: chemistry
KW  - Ozone
KW  - Reproducibility of Results
KW  - Solvents: chemistry
KW  - Ultraviolet Rays
KW  - Aerosols (NLM Chemicals)
KW  - Free Radicals (NLM Chemicals)
KW  - Organic Chemicals (NLM Chemicals)
KW  - Solvents (NLM Chemicals)
KW  - Ozone (NLM Chemicals)
KW  - Hydroxyl Radical (NLM Chemicals)
KW  - Oxygen (NLM Chemicals)
LB  - PUB:(DE-HGF)16
C6  - pmid:22869714
C2  - pmc:PMC3427056
UR  - <Go to ISI:>//WOS:000308085200020
DO  - DOI:10.1073/pnas.1115186109
UR  - https://juser.fz-juelich.de/record/22392
ER  -