The rates of copper fixation in copper amine preservative treated wood were investigated with different fixation conditions (20° with drying and 50° without drying) and post-steaming. We also measured the degree of leaching for other biocide components (azoles, quatz, and Cu-HDO). Treatments conditioned at 20° with drying required 50 days or more to fix in woods. While copper was stabilized in a single day at 50° without drying, the steam treatment finished fixation process less than 30 min. The steaming treatment did not increased cuprous oxide, reduction product of cupric oxide. Little amount of other biocide components were quantified even in samples held in the condition at 20° with drying except benzyl-dimethyl-dodecyl-ammoniumchloride (DBAC).

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