Change search
ReferencesLink to record
Permanent link

Direct link
Atmospheric chemistry in stereo: A new look at secondary organic aerosols from isoprene
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
Show others and affiliations
2011 (English)In: Geophysical Research Letters, ISSN 0094-8276, Vol. 38, L11807- p.Article in journal (Refereed) Published
Abstract [en]

Isoprene, a compound emitted by vegetation, could be a major contributor to secondary organic aerosols (SOA) in the atmosphere. The main evidence for this contribution were the 2-methylbutane-1,2,3,4-tetraols, or 2-methyltetrols (2-methylerythritol and 2-methylthreitol) present in ambient aerosols. In this work, the four stereoisomers of these tetraols were analyzed in aerosols from Aspvreten, Sweden. 2-C-methyl-D-erythritol was found in excess over its enantiomer in the Spring/Summer, by up to 29% in July. This clearly indicated some biological origins for this enantiomer, consistent with its well-documented production by plants and other living organisms. In addition, a minimum of 20 to 60% of the mass of racemic tetraols appeared from biological origin. Thus, the SOA mass produced by isoprene in the atmosphere is less than what indicated by the 2-methyltetrols in aerosols. Our results also demonstrate that stereochemical speciation can distinguish primary and secondary organic material in atmospheric aerosols.

Place, publisher, year, edition, pages
2011. Vol. 38, L11807- p.
Keyword [en]
National Category
Environmental Sciences
URN: urn:nbn:se:kth:diva-35621DOI: 10.1029/2011GL047323ISI: 000291813300002ScopusID: 2-s2.0-79959392794OAI: diva2:429579
Swedish Research Council, NT-2006-5129
QC 20110705Available from: 2011-07-05 Created: 2011-07-04 Last updated: 2011-07-05Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Borg-Karlson, Anna-KarinPei, YuxinPettersson Redeby, Johan
By organisation
Organic ChemistryAnalytical Chemistry
In the same journal
Geophysical Research Letters
Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar
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: 27 hits
ReferencesLink to record
Permanent link

Direct link