Bem Henryk, Bem Ewa Maria, Krawczyk Joanna, Płotek Marcin, Janiak Sławomira, Mazurek Daria
Higher Vocational State School in Kalisz, ul. Nowy Świat 4, 62-800 Kalisz, Poland.
J Radioanal Nucl Chem. 2013;295(3):2229-2232. doi: 10.1007/s10967-012-2272-2. Epub 2012 Oct 4.
Plastic PicoRad detectors with activated charcoal have been used for radon monitoring in local kindergartens and schools in two cities, Kalisz and Ostrów Wielkopolski, in the region of Greater Poland. Detectors were exposed for a standard time of 48 h during the autumn and winter of 2011 in 103 rooms (Kalisz) and 55 rooms (Ostrów Wlkp), respectively. The detectors were calibrated in the certified radon chamber of the Central Laboratory for Radiological Protection in Warsaw, Poland. The arithmetic and geometric means of indoor radon concentrations in the examined rooms were 46.0 and 30.3 Bq/m for Kalisz and 48.9 and 29.8 Bq/m for Ostrów Wlkp, respectively. The measured levels of the indoor radon concentrations were relatively low, since the main source of indoor radon for these low storey (max. three storeys) buildings is radon escaping from the underlying soil with a low Ra concentration (~15 Bq/m). Therefore, the calculated annual effective doses from that source for the children in Kalisz and Ostrów Wlkp were also low 0.35 mSv.
配备活性炭的塑料皮可拉德探测器已用于波兰大波兰地区卡利什和大波兰省奥斯特罗维茨的当地幼儿园和学校的氡监测。2011年秋冬，探测器在卡利什的103个房间和奥斯特罗维茨的55个房间分别进行了48小时的标准暴露。探测器在波兰华沙中央放射防护实验室的认证氡室内进行了校准。在受检房间中，卡利什室内氡浓度的算术平均值和几何平均值分别为46.0 Bq/m³和30.3 Bq/m³，奥斯特罗维茨分别为48.9 Bq/m³和29.8 Bq/m³。测得的室内氡浓度水平相对较低，因为这些低层（最高三层）建筑室内氡的主要来源是镭浓度较低（约15 Bq/kg）的下层土壤中逸出的氡。因此，卡利什和奥斯特罗维茨儿童从该来源计算出的年有效剂量也很低，为0.35 mSv。
