- 一般社団法人 電気学会
- 電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)
- vol.122, no.6, pp.300-305, 2002 (Released:2003-03-28)
Plants have the capability to purify various atmospheric chemicals. There are, however, few studies on the plant purification-characteristics. In this paper, the purification capability of pothos plant for formaldehyde was investigated. Formaldehyde is one of the typical chemical substances, which cause a sick-building syndrome. The purification capability (Pa) was introduced using a tin oxide gas sensor-output. The experiment was conducted for six different soils. It is recognized that the purification capabilities considerably differ according to the kinds of soils. Namely, the soils, which are mixed with the porous materials such as ceramics, tend to have the high capability. It became obvious that room temperature had also the effects on the purification capability. The optimum temperature, at which the plant had the high capability, was about 22°C.