室内空気中ホルムアルデヒドおよびギ酸濃度の実態調査と低減化実験

概要

論文の詳細を見る
In modern living environments, humans can be exposed numerous types of pollutants in indoor air. However, secondary products generated through chemical reactions were not fully concerned in relation to so-called Sick House Syndrome. In this study, we focused on an irritant formic acid (HCOOH) which might be an oxidation product of formaldehyde(HCHO). Then field measurements of indoor HCOOH and HCHO were conducted in new apartment houses. The HCOOH measured 0.11〜0.19 mg/m^3 in summer and 0.004〜0.01mg/m^3 in winter. The indoor concentrations showed significantly higher than those measured outdoor. Furthermore, concentration ratios between HCOOH and HCHO in summer were higher than those in winter. These results lead to the suggestion that a room temperature and photochemical oxidants had potential influences on the formation of indoor HCOOH from HCHO. On the other hand, as a preliminary reduction experiment, passive and active air-cleaning materials were tested to remove HCOOH in a full-scale laboratory (20m^3) having F2-grade plywood inside. The results showed that these materials were effective to reduce not only HCHO but also HCOOH concentrations in the laboratory.
2001-10-30