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1988
Journal Article
Titel
A smog chamber for studies of the reactions of terpenes and alkanes with ozone and OH.
Alternative
Eine Smogkammer fuer Untersuchungen der Reaktionen von Terpenen und Alkanen mit Ozon und OH
Abstract
The design and performance of a smog chamber for the study of photochemical reactions under simulated environmental conditions is described. The chamber is thermostated for aerosol experiments, and it comprises a gas chromatographic sample enrichment system suitable for monitoring hydrocarbons at the ppbv level. By irradiating NOx/alkane-mixtures rate constants for the reaction of OH radicals with n-alkanes are determined from n-pentane to n-hexadecane to be (k+-2sigma)/10E12 cubicmeters s-1 = 4.29+-0.16, 6.2+-0.6, 7.52 (reference value),8.8+-0.3, 10.2+-0.3, 11.7+-0.4, 13.7+-0.3, 15.1+-0.5, 17.5+-0.6, 19.3+-0.7, 22.3+-1.0, and 25.0+-1.3, respectively at 312 K. Rate constants, (k+-2sigma)/10E17 cubicmeters s-1, for the reaction of ozone with trans-2-butene (21.2+-1.0), cis-3-methylpentene-(2) (47.2+-1.7), cyclopentene (62.4+-0.2), cycloheptene (28.3+-1.5), alpha-pinene (8.6+-1.3, and beta-pinene (1.4+-3.5) are determined in the dark at 297 K using cis-2-butene(13.0) as reference standar d. (ITA)
Language
English