The objective of the study was impregnated with CCB and CB preservatives pine wood of moisture content varying from 12% to 55% subjected to leaching. Losses of copper and chromium were determined for individual layers of wood up to 3 cm from the girth. The results were compared to the total amount of metals determined in water extracts. The degree of leaching of metal ions from wood of 55% moisture content was higher than for air-dry wood. Spectrophotometric analysis of individual layers of wood after leaching revealed in some cases the increase of metal ions concentration in deeper layers.

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