Atmospheric peroxy radicals: ROXMAS, a new massspectrometric methodology for speciated measurements of HO2 and SRO2 and first results

ROXMAS (ROx Chemical Conversion/CIMS), a novel method for atmospheric speciated measurements of HO2 and the sum of organic peroxy radicals (SRO2) developed by MPI-K, has been successfully deployed in a field campaign on Monte Cimone, Italy, June-July 2000. The method relies on amplifying chemical conversion of peroxy radicals to gaseous sulfuric acid via the chain reaction with NO and SO2 and detection of the sulfuric acid by CIMS. Speciated measurements have been realized by diluting atmospheric air in either N2 or O2 buffer, thus exploiting the dependence of the conversion efficiency of RO2 to HO2 on [O2], [NO], and [SO2]. Speciated measurements of HO2 and RO2 are required to provide further insight into radical partitioning and thus to elucidate further the mechanisms of the oxidation of volatile organic compounds in the troposphere. This methodology yields useful speciated results for atmospheric conditions where CH3O2 makes a major contribution to total RO2. Under other conditions it gives an upper limit for [HO2] and a lower limit for [SRO2].
 
Citation proposal
Markus Hanke (Max-Planck Institute for Nuclear Physics, Atmospheric Physics Division) - Jens Uecker (Max-Planck Institute for Nuclear Physics, Atmospheric Physics Division) - T. Reiner (Max-Planck Institute for Nuclear Physics, Atmospheric Physics Division) - Frank Arnold (Max-Planck Institute for Nuclear Physics, Atmospheric Physics Division) (2002) . Atmospheric peroxy radicals: ROXMAS, a new massspectrometric methodology for speciated measurements of HO2 and SRO2 and first results. Elsevier Science Publishing Company https://geoportal.mountaingenius.org/geonetwork/srv/api/records/7e95f63a-7387-472c-91d8-3f839439606f
 

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7e95f63a-7387-472c-91d8-3f839439606f   XML
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eng
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  • Climatology, meteorology, atmosphere
  • Environment
 

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  • SHARE
Keywords
  • ROXMAS
Keywords
  • chemical flow reactor , Chemical ionization mass spectrometry (CIMS) , atmospheric speciated measurements
Keywords
  • HO2 radical , RO2 radical
 
 

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2002-02-10T00:00:00
 

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"Atmospheric peroxy radicals: ROXMAS, a new massspectrometric methodology for speciated measurements of HO2 and SRO2 and first results".

International Journal of Mass Spectrometry, 213, 2002.

Hanke, M., Uecker, J., Reiner, T., Arnold, F.

 

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Max-Planck Institute for Nuclear Physics, Atmospheric Physics Division
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markus.hanke@mpi-hd.mpg.de
Organisation name
Max-Planck Institute for Nuclear Physics, Atmospheric Physics Division
Email
jens.uecker@mpi-hd.mpg.de
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Max-Planck Institute for Nuclear Physics, Atmospheric Physics Division
Email
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Max-Planck Institute for Nuclear Physics, Atmospheric Physics Division
Email
frank.arnold@mpi-hd.mpg.de
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Elsevier Science Publishing Company
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nlinfo@sciencedirect.com
 

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Organisation name
Max-Planck Institute for Nuclear Physics, Atmospheric Physics Division
Email
markus.hanke@mpi-hd.mpg.de
Organisation name
Max-Planck Institute for Nuclear Physics, Atmospheric Physics Division
Email
jens.uecker@mpi-hd.mpg.de
Organisation name
Max-Planck Institute for Nuclear Physics, Atmospheric Physics Division
Email
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Max-Planck Institute for Nuclear Physics, Atmospheric Physics Division
Email
frank.arnold@mpi-hd.mpg.de
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Elsevier Science Publishing Company
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nlinfo@sciencedirect.com
 

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Ev-K2-CNR
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metadata@evk2cnr.org
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2012-02-28T16:23:24
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eng
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