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Under the framework of the EU SCA project NUCVOC (ENV4-CT97-0391) smog chamber experiments have been conducted in which a series of cyclic monoterpenes were oxidised by ozone or hydroxyl radicals. The formed secondary aerosols were sampled on Teflon filters and analysed by large volume gas chromatography-mass spectrometry (GC-MS) (chemical ionization CI and electron ionization EI) after extraction and derivatization. The main gaseous products were all detected in the aerosol phase. However a number of carboxylic acids, dicarboxylic acids and ketocarboxylic acids were identified in relative yields of up to 3% such as cis-pinonic acid from alpha-pinene, cis-pinic acid from alpha-pinene, beta-pinene and myrthenol, and limononic acid and keto-limononic acid from limonene.

Additional information

Authors: GLASIUS M ET AL, JRC Ispra (IT)
Bibliographic Reference: Paper presented: EUROTRAC 98 Symposium, Garmisch - Partenkirchen (DE), March 23-27, 1998
Availability: Available from (1) as Paper EN 41202 ORA
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