Evidence for ≥C3 alkyl nitrates in rural and remote atmospheres

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Abstract

Interactions of odd-nitrogen compounds with non-methane hydro-carbons and a variety of radical species have been shown to have a potential impact on atmospheric chemistry on local, regional, and even global scales1-9. To understand the interactions of atmospheric nitrogen compounds requires an accurate budget of individual reactive nitrogen species. But recent attempts to obtain a mass balance between total reactive nitrogen (NOy) and individual reactive nitrogen species (NO-I-NO2+HNO3+PAN (peroxyacetyl nitrate) +PPN (peroxypropionyl nitrate) + particulate NO -3) have not accounted for all NO9,10 y. One class of compound proposed to account for some of the NO y deficit is the alkyl nitrates (RONO2)5,10-12, although ambient measurements have not been available to test this hypothesis. Here I report measurements of RONO2 made in the North Pacific atmosphere, providing the first direct evidence for existence and transport of ≥C 3 alkyl nitrates in the troposphere. I also observed a variation in alkyl nitrate concentration which suggests these compounds may be used as unique tracers of 'polluted' air masses to remote areas. These observations are significant because relatively long-lived alkyl nitrates can serve as reservoirs of reactive nitrogen in the remote troposphere, where they can be converted to NOx, a key catalyst in ozone formation and destruction3,4.

Original languageEnglish (US)
Pages (from-to)426-428
Number of pages3
JournalNature
Volume331
Issue number6155
StatePublished - 1988
Externally publishedYes

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nitrate
atmosphere
nitrogen compound
nitrogen
troposphere
peroxyacetyl nitrate
atmospheric chemistry
air mass
mass balance
catalyst
tracer
ozone
carbon

ASJC Scopus subject areas

  • General

Cite this

Evidence for ≥C3 alkyl nitrates in rural and remote atmospheres. / Atlas, Elliot L.

In: Nature, Vol. 331, No. 6155, 1988, p. 426-428.

Research output: Contribution to journalArticle

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