Twin samples of sawn timber of Pinus sylvestris and Picea sp. were treated with copper-chromate-containing wood preservatives and subsequently kiln resp. air dried. After drying, the distribution of preservative and rate of fixation were determined. Drying of freshly treated wood in a condenser type kiln at temperatures of 60°C and 80°C and in a vacuum type kiln at 55°C with a pressure of about 200 hPa leads to an almost complete fixation of copper-chromate-containing wood preservatives after about 70 to 100 hours resp. 10 hours depending on the drying schedule applied. In the course of drying the amount of preservative increases on the wood surface. Chromium from treated wood was not found in the "condensate" of the condenser type kiln. Further experiments are ongoing with the vacuum type kiln for collection and analyses of "condensate".

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