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Licensed Unlicensed Requires Authentication Published by De Gruyter September 10, 2012

Effects of climatic test parameters on acetic acid emission from beech (Fagus sylvatica L.)

Vera Steckel , Anna Knöpfle and Martin Ohlmeyer EMAIL logo
From the journal Holzforschung

Abstract

Acetic acid (AA) emission from beech samples was studied in test chambers operated according to ISO 16000 part 9 and as a function of temperature and relative humidity (RH). The impact of RH was higher than that of temperature. AA emission was about 45% higher at 75% RH than under standard parameters (50% RH, 23°C). Probably, RH influences AA emission both by enhanced hydrolysis of acetyl groups, as well as by facilitating the release of AA into the surrounding air by diffusion. The concentration of AA in test chamber air was determined with thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS) as well as with ion chromatography (IC). Both techniques provided similar results. The values measured by IC ranged constantly 15% below those obtained with TD-GC-MS. This can be ascribed to losses during sampling of test chamber air.


Corresponding author. Thünen-Institut für Holztechnologie und Holzbiologie, Leuschnerstraße 91c, 21031 Hamburg, Germany

Received: 2011-11-25
Accepted: 2012-7-30
Published Online: 2012-09-10
Published in Print: 2013-01-01

©2013 by Walter de Gruyter Berlin Boston

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