摘要
氡是广泛存在于居室中的一种放射性气体，和人体的健康密切相关。以慈溪市某典型居民住宅为研究对象，重点研究了通风、温度、高度、地面装饰材料对室内氡浓度的影响，以及一天中氡浓度的连续变化规律。结果表明：在同一建筑物中，随着楼层的增加，室内氡浓度逐渐降低；在温度为24℃左右时室内氡浓度最低，在15℃～30℃之间，氡浓度表现大致为先下降后上升；随着通风时间的增加，室内氡浓度逐渐降低；夜间的氡水平比白天高，氡水平值的波动范围较大，且呈周期性变化。
Radon is a type of radioactive gas that widely exists in indoor air, and it was therefore closely related to human health. A typical residential dwelling in Cixi city was selected for investigating different factors of ventilation, temperature, height of the rooms and ground decorative materials on indoor radon concentration. And as well the continuous changing profile of con- eentration during one day was also examined. The results indicated that concentration of indoor radon would decrease with increase of floor in the same building, as well as with increase of ventilation time. Concentration of indoor radon would approximately first decrease and then increase when the temperature ranged in 15℃ -30℃, with a minimum at about 24℃. Radon level in night was higher than in.daytime, and it presented a periodic variation fluctuating in a comparatively large range.
出处
《环境科学与管理》
CAS
2009年第3期78-80,共3页
Environmental Science and Management
关键词
氡浓度
居室
影响因素
氡控制
radon concentration
residential dwelling
influence factors
radon controlling
