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首页> 外文期刊>Radiation Protection Dosimetry >INDOOR RADON CONCENTRATION AND ITS POSSIBLE DEPENDENCE ON VENTILATION RATE AND FLOORING TYPE
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INDOOR RADON CONCENTRATION AND ITS POSSIBLE DEPENDENCE ON VENTILATION RATE AND FLOORING TYPE

机译：室内RA浓度及其与通风率和地板类型的关系

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摘要

The results of radon concentration measurements carried out in dwellings with natural ventilation for 1 y in Bangalore are reported. Measurements, covering three sessions of the day (morning, afternoon, night) were performed two times in a month for 1 y at a fixed place of each dwelling at a height of 1 m above the ground surface in selected dwellings. The low-level radon detection system (LLRDS), an active method, was used for the estimation of radon concentration. The measurements were aimed to understand the diurnal variation and the effect of ventilation rate and flooring type on indoor radon concentration. The geometric mean ( + geometric standard deviation) of indoor radon concentration from about 500 measurements carried out in 20 dwellings is found to be 25.4 ± 1.54 Bq m~(-3). The morning, afternoon and night averages were found to be 42.6 + 2.05, 15.3 + 2.18 and 28.5 ± 2.2 Bq m~(-3), respectively. The approximate natural ventilation rates of the dwellings were calculated using the PHPAIDA-the on-line natural ventilation, mixed mode and air infiltration rate calculation algorithm and their effects on indoor radon concentrations were studied. The inhalation dose and the lung cancer risk due to indoor radon exposure were found to be 0.66 mSv y~(-1) and 11.9 per 10~6 persons, respectively. The gamma exposure rate was also measured in all the dwellings and its correlation with the inhalation dose rate was studied.
机译：报告了在班加罗尔自然通风1年的住宅中进行的concentration浓度测量的结果。每月两次在一天中的三个时段（上午，下午，晚上）进行测量，并在选定住宅中离地面1m高的每个住宅的固定位置进行1年，为期1年。低水平ra检测系统（LLRDS）是一种主动方法，用于估算concentration浓度。这些测量旨在了解昼夜变化以及通风速率和地板类型对室内ra浓度的影响。在20户住宅中进行的约500次测量得出的室内ra浓度的几何平均值（+几何标准差）为25.4±1.54 Bq m〜（-3）。早晨，下午和晚上的平均值分别为42.6 + 2.05、15.3 + 2.18和28.5±2.2 Bq m〜（-3）。使用PHPAIDA（在线自然通风，混合模式和空气渗透率计算算法）来计算住宅的近似自然通风率，并研究其对室内ra浓度的影响。发现室内indoor的吸入剂量和肺癌风险分别为每10〜6人0.66 mSv y〜（-1）和11.9。还测量了所有住所中的γ暴露率，并研究了其与吸入剂量率的相关性。

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  • 来源
    《Radiation Protection Dosimetry》 |2012年第1期|p.92-100|共9页
  • 作者

    G. V Ashok; N. Nagaiah; N. G. Shiva Prasad;

  • 作者单位

    Department of Physics, Bangalore University, Jnanabharathi, Bangalore 560 056, India;

    Department of Physics, Bangalore University, Jnanabharathi, Bangalore 560 056, India;

    Department of Physics, Bangalore University, Jnanabharathi, Bangalore 560 056, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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