Document Detail

Evidence for the existence of organosulfates from beta-pinene ozonolysis in ambient secondary organic aerosol.
MedLine Citation:
PMID:  17969680     Owner:  NLM     Status:  MEDLINE    
The formation of organosulfates from the gas-phase ozonolysis of beta-pinene in the presence of neutral or acidic sulfate particles was investigated in a series of indoor aerosol chamber experiments. The organosulfates were analyzed using high-performance liquid chromatography (LC) coupled to electrospray ionization-time-of-flight mass spectrometry (MS) in parallel to ion trap MS. Organosulfates were only found in secondary organic aerosol from beta-pinene ozonolysis in the presence of acidic sulfate seed particles. One of the detected organosulfates also occurred in ambient aerosol samples that were collected at a forest site in northeastern Bavaria, Germany. beta-Pinene oxide, an oxidation product in beta-pinene/O3 and beta-pinene/NO3 reactions, is identified as a possible precursor for the beta-pinene-derived organosulfate. Furthermore, several nitroxy-organosulfates originating from monoterpenes were found in the ambient samples. These nitroxy-organosulfates were only detected in the nighttime samples, suggesting a role for nighttime chemistry in their formation. Their LC/MS chromatographic peak intensities suggest that they represent an important fraction of the organic mass in ambient aerosols, especially at night.
Yoshiteru Iinuma; Conny Müller; Torsten Berndt; Olaf Böge; Magda Claeys; Hartmut Herrmann
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Environmental science & technology     Volume:  41     ISSN:  0013-936X     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2007 Oct 
Date Detail:
Created Date:  2007-10-30     Completed Date:  2008-01-24     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  6678-83     Citation Subset:  IM    
Leibniz-Institut für Troposphärenforschung, Permoserstrasse 15, D-04318 Leipzig, Germany.
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MeSH Terms
Air Pollutants / chemistry*
Bicyclo Compounds / chemistry*
Monoterpenes / chemistry*
Oxidants / chemistry*
Ozone / chemistry*
Sulfates / chemistry*
Sulfuric Acids / chemistry
Reg. No./Substance:
0/Aerosols; 0/Air Pollutants; 0/Bicyclo Compounds; 0/Monoterpenes; 0/Oxidants; 0/Sulfates; 0/Sulfuric Acids; 10028-15-6/Ozone; 127-91-3/beta-pinene; 7664-93-9/sulfuric acid

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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