Comparative evaluation of boron distribution from ulexite,colemanite and DOT rods in Scots pine wood  

作　　者：Saip Nami Kartal Evren Terzi Aysel Kanturk Figen Melek Cordan Secil Aydin Sabriye Piskin 

机构地区：[1]Department of Forest Biology and Wood Protection Technology Faculty of Forestry,Istanbul University-Cerrahpasa,34473 Bahcekoy,Istanbul,Turkey [2]Department of Chemical Engineering,Faculty of Chemistry-Metallurgical,Yıldız Technical University,34210 Davutpasa Esenler,Istanbul,Turkey

出　　处：《Journal of Forestry Research》2021年第1期419-426,共8页林业研究（英文版）

基　　金：TUBITAK(The Scientifi c and Technological Research Council of Turkey)under 1005—National New Ideas and Products R&D Funding Program(Project No:1160149).

摘　　要：This study evaluated boron diff usion from rods made of raw boron minerals,ulexite and colemanite with low water solubility,in comparison with di-sodium octaborate tetrahydrate(DOT).Scots pine(Pinus sylvestris L.)sapwood and heartwood blocks were conditioned to target moisture contents of 30%,60%,and 90%.The rods were inserted into the blocks through treatment holes and boron diff usion was observed at three assay zones across the blocks after 7,30,60 and 90-day-incubation at room temperature.Ethylene glycol was also inserted into the holes to improve boron diff usion.Boron levels increased with increased wood moisture content.With some exceptions,boron in the assay zones did not tend to follow consistent amount gradients with distance from the treatment hole.Boron levels from ulexite rods were higher than those from colemanite rods,with DOT rods with the highest diff usion rates as a result of higher water solubility of DOT than ulexite and colemanite.The results suggest that ulexite-based rods may be useful inthe presence of ethylene glycol in sapwood when wood is at high moisture content for extended periods.

关 键 词：Boron rods Remedial ULEXITE COLEMANITE Distribution DOT 

分 类 号：S781[农业科学—木材科学与技术]