二つの改良デシケータ装置のホルムアルデヒド除去効果の比較

概要

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The former desiccator system (Type I) and the new desiccator system (Type II) for the measurement of the dew condensation and the relative humidity were produced, and the formaldehyde (FA) removal rates were compared between the two desiccator systems. Those experiments were performed in the early morning in winter when the dew condensation tends to occur. The dew condensation was observed in the Type I. In the Type II, passage of FA gas through the hygroscopic bottle containing a desiccant resulted in the prevention of the dew condensation and maintenance of humidity at about 50%. The FA removal rates by coffee powders, black tea leaves, and green tea leaves were higher using the Type II than with the Type I. The FA removal rate using the Type II was higher for used-tea leaves or coffee powders than with unused ones. In particular with green tea leaves, the FA removal rates increased with the frequency and time of decoction. These results suggest the superiority of the Type II to the Type I in the measurement of the FA removal rates with various adsorbents.
東北薬科大学の論文