Comparative evaluation of boron distribution from ulexite, colemanite and DOT rods in Scots pine wood
| Autor: | Sabriye Pişkin, Aysel Kantürk Figen, Saip Nami Kartal, Seçil Aydin, Melek Cordan, Evren Terzi |
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| Rok vydání: | 2019 |
| Předmět: |
inorganic chemicals
0106 biological sciences Materials science genetic structures Moisture biology Diffusion Analytical chemistry Scots pine chemistry.chemical_element Forestry 04 agricultural and veterinary sciences engineering.material biology.organism_classification 01 natural sciences Colemanite Rod Ulexite chemistry 040103 agronomy & agriculture engineering 0401 agriculture forestry and fisheries Boron Water content 010606 plant biology & botany |
| Zdroj: | Journal of Forestry Research. 32:419-426 |
| ISSN: | 1993-0607 1007-662X |
| Popis: | This study evaluated boron diffusion 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 diffusion 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 diffusion. 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 diffusion rates as a result of higher water solubility of DOT than ulexite and colemanite. The results suggest that ulexite-based rods may be useful in the presence of ethylene glycol in sapwood when wood is at high moisture content for extended periods. |
| Databáze: | OpenAIRE |
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