Atmospheric Oxidation of Biogenic Hydrocarbons: Reaction of Ozone with β-Pinene, d-Limonene and trans-Caryophyllene

Daniel Grosjean, Edwin L. Williams, Eric Grosjean, Jean M. Andino, John H. Seinfeld

Research output: Contribution to journalArticle

138 Scopus citations

Abstract

Several gas-phase carbonyl products of two terpenes, β-pinene and D-limonene, and of the sesquiterpene, trans-caryophyllene, have been identified and their concentrations measured in experiments involving the reaction of these unsaturated biogenic hydrocarbons with ozone in the dark. Cyclohexane was added as a scavenger for the hydroxyl radical to minimize interferences from OH, which forms as a product of the ozone-hydrocarbon reaction. Carbonyl products were formaldehyde (yield = 0.42) and nopinone (yield = 0.22) from β-pinene, formaldehyde (yield = 0.10) and 4-acetyl-1-methylcyclohexene from D-limonene, and formaldehyde (yield 0.08) from trans-caryophyllene. The nature and yields of these products are discussed in terms of the ozone-olefin reaction mechanism. The ozone-β-pinene reaction rate constant, measured in the presence of cyclohexane, is 12.2 ± 1.3 × 10−18 cm3 molecule−1 s−1 at 22 ± 1 °C. Carbonyl products have also been identified in exploratory experiments with trans-caryophyllene and NO in sunlight.

Original languageEnglish (US)
Pages (from-to)2754-2758
Number of pages5
JournalEnvironmental Science and Technology
Volume27
Issue number13
DOIs
StatePublished - Jan 1 1993
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

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