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Protection of terpenes against oxidative and acid decomposition on adsorbent cartridges

Ann-Margret Strömvall (Institutionen för kemisk miljövetenskap) ; Göran Petersson (Institutionen för kemisk miljövetenskap)
Journal of Chromatography Vol. 589 (1992), p. 385-389.
[Artikel, refereegranskad vetenskaplig]

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.

Denna post skapades 2008-08-03. Senast ändrad 2015-06-12.
CPL Pubid: 72633


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Institutioner (Chalmers)

Institutionen för kemisk miljövetenskap (1900-2003)


Analytisk kemi

Chalmers infrastruktur