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Radon and thoron daughter concentrations in Romanian houses

机译:罗马尼亚房屋中concentrations和and的女儿浓度

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The indoor and outdoor radon and thoron daughter concentrations were determined in 119 Romanian dwellings, by air sampling on a membrane filter, followed by repeated gross - alpha countings. Several constructive and physical parameters have been recorded.rnKnowing the radon and thoron daughters concentrations, the Potential Alpha Energy Concentration ( PAEC ), the Equilibrium Equivalent Concentration ( EEC ), the equilibrium factor (F) and the effective dose for adults (ED) have been calculated.rnEEC ( Rn ) experimental values for indoor exposure ranged from 3 to 130 Bq/ m~3, with a mean value of 22 Bq . m~(-3). The main observed influencing parameters were: ventilation rate, type of building material and indoor relative humidity. It was also pointed out that the contribution of the thoron daughters to the total ED is about 20 %. The results of the concentrations within an experimental house with a part of walls from phosphogypsum are presented.
机译:通过在膜过滤器上进行空气采样,然后重复进行总α计数,确定了119个罗马尼亚住宅中的室内和室外ra和子的浓度。记录了一些建设性和物理参数。知道K和子的浓度,势能能量浓度(PAEC),平衡当量浓度(EEC),平衡因子(F)和成人有效剂量(ED)室内暴露的rnEEC(Rn)实验值范围为3至130 Bq / m〜3,平均值为22 Bq。 m〜(-3)。观察到的主要影响参数为:通风速率,建筑材料类型和室内相对湿度。也有人指出,ron离子对总ED的贡献约为20%。给出了带有磷石膏墙的部分实验房屋内的浓度结果。

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