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首页> 外文期刊>Arabian Journal for Science and Engineering >Volumetric Variations of Indoor Radon and Thoron
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Volumetric Variations of Indoor Radon and Thoron

机译：室内Rad和Thor的体积变化

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摘要

The volumetric variations of indoor radon and thoron were measured in rooms ranging in volume from 30-310 m3 in different dwellings at various locations in Bangalore, India. The rooms selected were similar in quality of construction, age, type of walls, and type of floor. Twin cup plastic track detectors were installed in the rooms of 42 dwellings to record indoor ~(222)Rn and ~(220)Rn levels. Higher concentrations were observed in rooms with lower volumes than in rooms with higher volumes. The ~(222)Rn and ~(220)Rn concentrations in the dwellings ranged from 4.0-93.0 Bq m~(-3), whereas the concentrations of their daughter products ranged from 0.01-2.5 mWL. When the room volume increased tenfold, the concentration of ~(222)Rn reduced by 23% and that of ~(220)Rn reduced by 13%, provided all other conditions remained the same. The concentrations did not increase linearly with the volumes of the rooms. The annual effective exposure dose rate because of ~(222)Rn, ~(220)Rn and their daughter products ranged from 0.1-0.4 mSv year~(-1) with a mean of 0.2 ± 0.1 mSv year~(-1).
机译：在印度班加罗尔不同地点的不同住宅中，室内ra和的体积变化在30-310立方米不等的房间内测量。选择的房间在建筑质量，年龄，墙壁类型和地板类型上都相似。双杯塑料轨道探测器安装在42户房间中，以记录室内〜（222）Rn和〜（220）Rn的水平。在容积较小的房间中观察到的浓度高于在容积较大的房间中的浓度。住宅中〜（222）Rn和〜（220）Rn的浓度范围为4.0-93.0 Bq m〜（-3），而它们的子产物的浓度范围为0.01-2.5 mWL。当房间体积增加十倍时，在其他所有条件不变的情况下，〜（222）Rn的浓度降低23％，〜（220）Rn的浓度降低13％。浓度不随房间的体积线性增加。由于〜（222）Rn，〜（220）Rn及其子产物的年有效暴露剂量率范围为0.1-0.4 mSv年〜（-1），平均为0.2±0.1 mSv年〜（-1）。

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