Formaldehyde Concentration in a Private Home.

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  • 住宅内ホルムアルデヒド濃度

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Abstract

Measurement of indoor and outdoor formaldehyde concentration was carried out in a private home in spring, summer and winter. Indoor formaldehyde concentration was higher in summer and spring than in winter because high temperature promotes volatility of formaldehyde. Formaldehyde concentration was higher in western-style rooms such as the living-room than in the Japanese-style room because there were many formaldehyde sources such as furniture and wallpaper in the former. Formaldehyde concentration was higher in rooms with window closed than with window open because opening a window causes decrease in formaldehyde concentration through ventilation.<br>Indoor formaldehyde concentration was measured by passive gas-tube over a year and a half. Formaldehyde concentration was higher in spring and fall than in summer, when outdoor air temperature is high, or winter, when windows are almost always closed. The relations between time window is open, room temperature, and formaldehyde concentration were investigated. There was a close correlation between time window was open and formaldehyde concentration in summer, when windows are almost always open. On the other hand, there was a close correlation between room temperature and formaldehyde concentration in winter, when windows are almost always closed.

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