Radiata pine sapwood stakes were treated with benzalkonium chloride (AAC) or copper-chrome-arsenate (CCA). After fixation and drying the outer 2 mm and 2-4 mm layers were removed from one radial longitudinal face. The planed face was coated with a waterproof coating and AAC-treated stakes were leached for 6, 12 or 18 weeks; 12 weeks for the CCA-treated stakes. After airdrying three 2 mm layers (0-2, 2-4, 4-6 mm from outer face) were removed sequentially from the uncoated radial longitudinal face. The results showed a depletion of AAC particularly from the outer 2 mm. The CCA redistributed within the outer 6 mm with copper and arsenic concentrations increased in the outer 2 mm.

Download document (359 kb)
free for the members of IRG. Available if purchased.

Purchase this document