Helmholtz Centre for Environmental Research - UFZ, Leipzig, Germany.
inVENTer GmBH, Löberschütz, Germany.
Isotopes Environ Health Stud. 2022 May;58(2):195-213. doi: 10.1080/10256016.2022.2047960. Epub 2022 Mar 10.
Radon-222 contributes to half of the natural radiation exposure of humans and is one of the main causes of lung cancer. Of particular importance for humans is the exposure to radon-222 indoors, which enters living and working areas from the soil air, e.g. through cracks in the foundations of buildings. An easy and efficient way to minimise indoor radon in dwellings can be achieved through ventilation. How meteorological parameters and the geological background can influence ventilation efficiency in reducing indoor radon has not yet been fully investigated. Therefore, a decentralised ventilation system was installed in an unoccupied flat located in a former uranium mining region to analyse the effect of already existing ventilation modes on indoor radon activity concentration. It is aimed to assess 22 different ventilation experiments that were performed within the time period of one year. Even with a strong seasonal trend with significantly lower indoor radon activity concentrations in summer compared to winter, the decentralised ventilation system was able to reduce indoor radon by up to 83 %. Thereby, strong dependencies on the experimental parameters such as ventilation type or performance level of the fans were found.
氡-222 是人类天然辐射照射的一半来源，也是肺癌的主要成因之一。对人类而言，尤其值得关注的是室内氡-222 的暴露，它会从土壤空气中进入居住和工作场所，例如通过建筑物地基的裂缝。通过通风，可以轻松有效地将住宅内的氡减少到最低水平。然而，气象参数和地质背景如何影响通风效率以减少室内氡，目前尚未得到充分研究。因此，在一个位于前铀矿区的无人居住公寓内安装了一个分散式通风系统，以分析现有的通风模式对室内氡活度浓度的影响。目的是评估在一年内进行的 22 次不同的通风实验。尽管存在强烈的季节性趋势，夏季室内氡活度浓度明显低于冬季，但分散式通风系统仍能够将室内氡减少多达 83%。因此，发现实验参数（如通风类型或风扇的性能水平）存在很强的依赖性。
