Tanaka-Kagawa Toshiko, Jinno Hideto, Furukawa Yoko, Nishimura Tetsuji
Kokuritsu Iyakuhin Shokuhin Eisei Kenkyusho Hokoku. 2010(128):71-7.
Organic chemicals are widely used as ingredients in household products. Therefore, furniture and other household products as well as building products may influence the indoor air quality. This study was performed to estimate quantitatively influence of household products on indoor air quality. Volatile organic compound (VOC) emissions were investigated for 10 products including furniture (chest, desk, dining table, sofa, cupboard) and electrical appliances (refrigerator, electric heater, desktop personal computer, liquid crystal display television and audio) by the large chamber test method (JIS A 1912) under the standard conditions of 28 degrees C, 50% relative humidity and 0.5 times/h ventilation. Emission rate of total VOC (TVOC) from the sofa showed the highest; over 7900 microg toluene-equivalent/unit/h. Relatively high TVOC emissions were observed also from desk and chest. Based on the emission rates, the impacts on the indoor TVOC were estimated by the simple model with a volume of 17.4 m3 and ventilation frequency of 0.5 times/h. The estimated TVOC increment for the sofa was 911 microg/m3, accounting for almost 230% of the provisional target value, 400 microg/m3. The values of estimated increment of toluene emitted from cupboard and styrene emitted from refrigerator were 10% and 16% of guideline values, respectively. These results revealed that VOC emissions from household products may influence significantly indoor air quality.
有机化学品被广泛用作家居产品的成分。因此，家具及其他家居产品以及建筑产品可能会影响室内空气质量。本研究旨在定量评估家居产品对室内空气质量的影响。采用大型测试舱法（JIS A 1912），在28摄氏度、相对湿度50%和通风频率0.5次/小时的标准条件下，对10种产品（包括家具（衣柜、书桌、餐桌、沙发、橱柜）和电器（冰箱、电暖器、台式个人电脑、液晶电视和音响））的挥发性有机化合物（VOC）排放进行了调查。沙发的总挥发性有机化合物（TVOC）排放率最高，超过7900微克甲苯当量/单位/小时。书桌和衣柜的TVOC排放量也相对较高。根据排放率，采用体积为17.4立方米、通风频率为0.5次/小时的简单模型估算了对室内TVOC的影响。沙发的TVOC估计增量为911微克/立方米，几乎占暂定目标值400微克/立方米的230%。橱柜排放的甲苯和冰箱排放的苯乙烯的估计增量值分别为指导值的10%和16%。这些结果表明，家居产品的VOC排放可能会显著影响室内空气质量。
