鉻銅類保存劑處理臺灣杉木材經水浸漬後之藥劑保留性質研究

The Conservation of Chemicals by CCA and CCB Preserved Woods after Water-immersion

王振瀾(Chen-Lan Wang) ； 尹華文(Hwa-Wen Yin)

《林業試驗所研究報告季刊》 7卷4期 (1992/12) Pp. 359-370

https://doi.org/10.7075/BTFRI.199212.0359

摘要

Three preservatives, CCA-oxide, CCA-salt and CCB, were used to treat sap wood and heartwood of Taiwania cryptomerioides Hay. The absorption of chemicals by woods was found to be in the sequency of CCA oxide＞CCA-salt＞CCB. Sapwood absorbed more preservatives than heartwood did.
The conserving amount of chemicals was measured after five, fifteen and twenty-five days of water-immersion. For both sapwoods and heartwoods, the conserving ratio (conserving/absorption) of preservatives was determined to be as CCA-oxide CCA-salt＞CCB. Besides, the conserving ratio was inversely proportional to the immersing time.
The Chromium, Copper and Arsenic ions in the immersing water were detected by standard AA methods. The results showed that As was in the highest, Cu the second, and Cr the least concentrations. Thus, the fixation of chromium ton on wood was furtherly confirmed. However, the leaching property of As might cause problems to the environment.

關鍵字

臺灣杉 ； 邊材 ； 心材 ； 保存藥劑 ； 吸收量 ； 保留性 ； 鉻離子 ； 銅離子 ； 砷離子

並列摘要

Three preservatives, CCA-oxide, CCA-salt and CCB, were used to treat sap wood and heartwood of Taiwania cryptomerioides Hay. The absorption of chemicals by woods was found to be in the sequency of CCA oxide＞CCA-salt＞CCB. Sapwood absorbed more preservatives than heartwood did.
The conserving amount of chemicals was measured after five, fifteen and twenty-five days of water-immersion. For both sapwoods and heartwoods, the conserving ratio (conserving/absorption) of preservatives was determined to be as CCA-oxide CCA-salt＞CCB. Besides, the conserving ratio was inversely proportional to the immersing time.
The Chromium, Copper and Arsenic ions in the immersing water were detected by standard AA methods. The results showed that As was in the highest, Cu the second, and Cr the least concentrations. Thus, the fixation of chromium ton on wood was furtherly confirmed. However, the leaching property of As might cause problems to the environment.

並列關鍵字

Taiwania cryptomerioides Hay. ； sapwood ； heartwood ； preservatives ； absorption amount ； conserving property ； chromium-ion ； copper-ion ； arsenic-ion