STUDIES ON GUIDELINES TO KEEP HEALTHY DAILY LIFE FROM INJURIES CAUSED BY INDOOR AIR POLLUTANTS

这项研究的目的是为编制保持舒适和健康的室内空气质量指南提供有用的信息。基于被动采样方法，对东京周围约100个家庭客厅的室内空气污染物进行了检测。结果表明：夏季由于高温高湿，空气中甲醛浓度升高。然而，观察到的大部分浓度都低于室内空气质量标准的80ppb。新建和改造的房屋会释放出高水平的甲醛，但在三年内会大大减少。冬季发现二氧化氮水平较高，因为没有烟囱的供暖设施，如燃气和煤油炉，被用来在室内排放燃烧的气体。偶尔，空气中的氨浓度会超过空气质素标准4至6倍。夏季的氨浓度普遍偏高，这可能与环境温度有关。此外，他们在与家猫共处的房子里度过了一年的时光。真菌数量夏季高，冬季低。这一趋势是由季节湿度变化引起的。枝孢霉和青霉菌是室内环境中最常见的真菌种类。结论是，本研究的这些发现将是编制指南的重要信息，以从室内空气质量的角度确保我们的健康日常生活。

The aim of this study is to obtain the useful information for compilation of the guidelines to keep the comfortable and healthy indoor air quality. Indoor air pollutants in living rooms in about 100 families in around Tokyo were examined based on a passive sampling methodology. As a result, the characteristics of the pollutants were grasped as follows : Concentration of formaldehyde was raised in summer due to high temperature and humidity. However, most of the concentrations were observed to be less than 80 ppb of indoor air quality standard. Newly built and reformed houses would release high level formaldehyde but it would be greatly decreased in three years. Nitrogen dioxide was found at a high level in winter because heating facilities without stack such as gas and kerosene stoves were used to emit burned gas indoors. Occasionally, the concentrations ranged more than air quality standard by a factor of 4 to 6. Ammonia concentrations were generally high in summer which may be related to the ambient temperature. Moreover, they were very high in a house with domestic cats through a year. Fungi amount was high in summer and low in winter. This trend would be derived from the seasonal humidity variation. Cladosporium, and Penicillium were observed to be the most popular fungus species in indoor environment. It is concluded that these findings in this study will be important information to compile the guidelines to secure our healthy daily lives from the standpoint of indoor air quality.