Protection of terpenes against oxidative and acid decomposition on adsorbent cartridges
Journal article, 1992

Sampling of monoterpenes from air on Tenax porous polymer may introduce analytical errors owing to oxidation and acid rearrangements on the adsorbent. Particularly terpenes which react rapidly with ozone, e.g. myrcene and limonene, are partially lost when sampling air with high photooxidant levels. On acidified adsoption cartridges, alpha-pinene and beta-pinene may be converted into camphene, limonene, para-cymene and several minor monoterpenes. Pretreatment of the adsorption cartridges with thiosulphate as an antioxidant and hydrogencarbonate as a buffer were found to prevent decomposition and rearrangements. Applications to monoterpenes emitted from the kraft, thermo-mechanical and sulphite pulp industries are presented.


Ann-Margret Hvitt Strömvall

Department of Chemical Environmental Science

Göran Petersson

Department of Chemical Environmental Science

Journal of Chromatography

Vol. 589 385-389

Subject Categories

Analytical Chemistry

Environmental Sciences

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