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首页> 外文期刊>African Journal of Biotechnology >Preliminary evaluation of boron release and biological resistance of wood treated with disodium octoborate tetrahydrate (DOT) and a water-repellent compound
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Preliminary evaluation of boron release and biological resistance of wood treated with disodium octoborate tetrahydrate (DOT) and a water-repellent compound

机译：辛硼酸四水合二钠（DOT）和憎水化合物处理的木材中硼的释放和生物抗性的初步评估

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Wood specimens were vacuum-treated with disodium octoborate tetrahydrate (DOT) and a commercial water repellent compound. Leachates sampled from the leaching cycles for 10 days and extracts from treated wood specimens were analyzed for boron content. Treated wood specimens were exposed to wood degrading fungi in Petri dishes. Wood specimens were also subjected to termite resistance tests by using the subterranean termites. Treatments with the water repellent compound resulted in nearly 50% less boron leaching at 0.5 and 1% DOT concentration levels in comparison with DOT-only treated specimens. More boron release was seen in the specimens treated with 0.1% DOT and the water repellent compound when compared to either 0.5 or 1% DOT + water repellent compound treatments. Wood specimens treated with the compound and 0.5% DOT or more concentrations were well protected from fungal attack even after leaching course. All unleached specimens showed perfect protection against termites; however, mass losses in control specimens and leached specimens were nearly 30%. After treatments with 0.5 and 1% DOT and the compound, nearly 50% of total boron remained in these specimens after leaching course increased termite resistance of wood. The termite mortalities were in accordance with the mass losses that occurred in the specimens.
机译：木材标本用四水合八水合硼酸二钠（DOT）和市售的憎水化合物进行真空处理。从浸提周期为10天的浸出液中取样，并分析处理过的木材标本中的浸出液中的硼含量。将处理过的木材标本置于培养皿中的木材降解真菌中。还使用地下白蚁对木材标本进行了防白蚁试验。与仅用DOT处理的标本相比，用憎水化合物处理的硼在0.5和1％DOT浓度水平下的浸出减少了近50％。与0.5或1％DOT +拒水化合物处理相比，在用0.1％DOT和拒水化合物处理的样品中发现更多的硼释放。即使经过沥滤过程，用化合物和0.5％DOT或更高浓度的化合物处理的木材标本也能很好地防止真菌侵袭。所有未浸出的标本均表现出对白蚁的完美保护;但是，对照样品和沥滤样品的质量损失接近30％。用0.5％和1％DOT和该化合物处理后，浸出过程增加了木材的白蚁抗性后，这些样品中几乎保留了总硼的50％。白蚁死亡率与样本中发生的质量损失一致。

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