Change search
ReferencesLink to record
Permanent link

Direct link
Influence of ozone initiated processing on the toxicity of aerosol particles from small scale wood combustion
Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
Show others and affiliations
2015 (English)In: Atmospheric Environment, ISSN 1352-2310, Vol. 102, 282-289 p.Article in journal (Refereed) Published
Abstract [en]

Black carbon containing emissions from biomass combustion are being transformed in the atmosphere upon processing induced by tropospheric ozone and UV. The knowledge today is very limited on how atmospheric processing affects the toxicological properties of the emissions. The aim of this study was to investigate the influence of ozone initiated (dark) atmospheric processing on the physicochemical and toxicological properties of particulate emissions from wood combustion. Emissions from a conventional wood stove operated at two combustion conditions (nominal and hot air starved) were diluted and transferred to a chamber. Particulate matter (PM) was collected before and after ozone addition to the chamber using an impactor. Detailed chemical and physical characterization was performed on chamber air and collected PM. The collected PM was investigated toxicologically in vitro with a mouse macrophage model, endpoints included: cell cycle analysis, viability, inflammation and genotoxicity. The results suggest that changes in the organic fraction, including polycyclic aromatic hydrocarbons (PAHs) are the main driver for differences in obtained toxicological effects. Fresh hot air starved emissions containing a higher organic and PAH mass-fraction affected cell viability stronger than fresh emissions from nominal combustion. The PAH mass fractions decreased upon aging due to chemical degradation. Dark aging increased genotoxicity, reduced viability and reduced release of inflammatory markers. These differences were statistically significant for single doses and typically less pronounced. We hypothesize that the alterations in toxicity upon simulated dark aging in the atmosphere may be caused by reaction products that form when PAHs and other organic compounds react with ozone and nitrate radicals.

Place, publisher, year, edition, pages
2015. Vol. 102, 282-289 p.
Keyword [en]
Biomass combustion, Polycyclic aromatic hydrocarbons, Aging, Cell studies
National Category
Environmental Sciences Meteorology and Atmospheric Sciences
URN: urn:nbn:se:umu:diva-102306DOI: 10.1016/j.atmosenv.2014.11.068ISI: 000349590300031OAI: diva2:825767
Available from: 2015-06-24 Created: 2015-04-23 Last updated: 2015-06-24Bibliographically approved

Open Access in DiVA

fulltext(2155 kB)41 downloads
File information
File name FULLTEXT01.pdfFile size 2155 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Search in DiVA

By author/editor
Nyström, RobinBoman, Christoffer
By organisation
Department of Applied Physics and Electronics
In the same journal
Atmospheric Environment
Environmental SciencesMeteorology and Atmospheric Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 41 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 52 hits
ReferencesLink to record
Permanent link

Direct link