Absorption and Permeability of Toxic Gases by Wood-based Materials

实验：采用红外气体分析仪和气相色谱法对二氧化碳和萜烯进行了分析。结果：1)木材对二氧化碳的吸收量过低，吸收量与木材含水量有关；2)测量了不同内部样品的二氧化碳渗透率。用木纤维或棉纤维制成的板材透气性好，对室内空气有一定的改善作用。3)当关闭门窗以减少通风时，二氧化碳浓度的降低幅度较小。4)气相色谱法分析萜烯油挥发物。从杉木和桧木幼叶中分别检测到松油醇Ac、4-松油醇、香莱酚、龙骨醇Ac、α -蒎烯和月桂烯。5)吸收的萜烯在肝脏中代谢，我们可以得到证据表明，暴露于萜烯气体会降低最高血压。

EXPERIMENT : Carbon dioxide and terpene were analyzed by using the infra-red gases analyzer and the gaschromatography.THE RESULTS OBTAINED1)Absorbing capacity of carbon dioxide of wood was too low and the amount of it was dependent on water content.2)Permeability of carbon dioxide was measured on various interior samples. Sheet materials made of wooden fiber or cotton fiber shows high permeation rate, and it seems good for indoor air condition.3)When windows and doors were closed so as to minimize ventilation, concentration of carbon dioxide showed less reduction.4)Volatile matters of terpene oil were analyzed by gaschromatography. Terpinyl Ac, 4-Terpineol, Elemol, Bornyl Ac, alpha -Pinene and Myrcene were detected from young leaves of sugi and hinoki.5)Absorbed terpene is metabolized in the liver and we can get an evidence that exposure to terpene gases decreases maximum blood pressure.