Göran Frank
Studierektor forskarutbildning
No particle mass enhancement from induced atmospheric ageing at a rural site in northern Europe
Författare
Summary, in English
A large portion of atmospheric aerosol particles consists of secondary material produced by oxidation reactions. The relative importance of secondary organic aerosol (SOA) can increase with improved emission regulations. A relatively simple way to study potential particle formation in the atmosphere is by using oxidation flow reactors (OFRs) which simulate atmospheric ageing. Here we report on the first ambient OFR ageing experiment in Europe, coupled with scanning mobility particle sizer (SMPS), aerosol mass spectrometer (AMS) and proton transfer reaction (PTR)-MS measurements. We found that the simulated ageing did not produce any measurable increases in particle mass or number concentrations during the two months of the campaign due to low concentrations of precursors. Losses in the reactor increased with hydroxyl radical (OH) exposure and with increasing difference between ambient and reactor temperatures, indicating fragmentation and evaporation of semivolatile material.
Avdelning/ar
- Centrum för miljö- och klimatvetenskap (CEC)
- Kärnfysik
- MERGE: ModElling the Regional and Global Earth system
- Ergonomi och aerosolteknologi
- NanoLund: Centre for Nanoscience
- Institutionen för naturgeografi och ekosystemvetenskap
Publiceringsår
2019-07-17
Språk
Engelska
Publikation/Tidskrift/Serie
Atmosphere
Volym
10
Issue
7
Dokumenttyp
Artikel i tidskrift
Förlag
MDPI AG
Ämne
- Meteorology and Atmospheric Sciences
Nyckelord
- Ambient aerosol
- Oxidation flow reactor
- PAM
- Secondary organic aerosol
Status
Published
Projekt
- Impact of a Salix biofuel plantation on the emission of Biogenic Volatile Organic Compounds and the production of Secondary
- The variability in Salix BVOC emissions and possible consequences for managed SRC plantations
ISBN/ISSN/Övrigt
- ISSN: 2073-4433