| Title: | Identification of organic hydroperoxides and hydroperoxy acids in secondary organic aerosol formed during the ozonolysis of different monoterpenes and sesquiterpenes by on-line analysis using atmospheric pressure chemical ionization ion trap mass spectrometry |
| Author(s): | Reinnig MC; Warnke J; Hoffmann T; |
| Address: | "Institut fur Anorganische Chemie und Analytische Chemie der Johannes Gutenberg-Universitat Mainz, Duesbergweg 10-14, D-55099 Mainz, Germany" |
| Journal Title: | Rapid Commun Mass Spectrom |
| ISSN/ISBN: | 1097-0231 (Electronic) 0951-4198 (Linking) |
| Abstract: | "On-line ion trap mass spectrometry (ITMS) enables the real-time characterization of reaction products of secondary organic aerosol (SOA). The analysis was conducted by directly introducing the aerosol particles into the ion source. Positive-ion chemical ionization at atmospheric pressure (APCI(+)) ITMS was used for the characterization of constituents of biogenic SOA produced in reaction-chamber experiments. APCI in the positive-ion mode usually enables the detection of [M+H](+) ions of the individual SOA components. In this paper the identification of organic peroxides from biogenic volatile organic compounds (VOCs) by on-line APCI-ITMS is presented. Organic peroxides containing a hydroperoxy group, generated by gas-phase ozonolysis of monoterpenes (alpha-pinene and beta-pinene) and sesquiterpenes (alpha-cedrene and alpha-copaene), could be detected via on-line APCI(+)-MS/MS experiments. A characteristic neutral loss of 34 Da (hydrogen peroxide, H(2)O(2)) in the on-line MS/MS spectra is a clear indication for the existence of an organic peroxide, containing a hydroperoxy functional group" |
| Keywords: | "Aerosols/chemistry Air Pollutants/*chemistry Carboxylic Acids/*analysis Hydrogen Peroxide/*analysis Monoterpenes/*chemistry Online Systems Peroxides/*analysis Pressure Sesquiterpenes/*chemistry Spectrometry, Mass, Electrospray Ionization/instrumentation/*;" |
| Notes: | "MedlineReinnig, Marc-Christopher Warnke, Jorg Hoffmann, Thorsten eng Evaluation Study Research Support, Non-U.S. Gov't England 2009/05/05 Rapid Commun Mass Spectrom. 2009 Jun; 23(11):1735-41. doi: 10.1002/rcm.4065" |
