Characteristics of radon and its progeny concentrations in air-conditioned office buildings in Tokyo.
Characteristics of radon and its progeny concentrations in air-conditioned office buildings in Tokyo.
复制标题
DOI：
10.1093/oxfordjournals.rpd.a006338
复制
发表时间：
2003-08
影响因子：
1
通讯作者：
S. Tokonami;M. Furukawa;Y. Shicchi;T. Sanada;Y. Yamada
中科院分区：
文献类型：
--
作者：
S. Tokonami;M. Furukawa;Y. Shicchi;T. Sanada;Y. Yamada
为了解空调办公楼内氡及其子体的特征，进行了一系列的测量。氡的长期测量是用蚀刻径迹探测器进行的。在一些建筑物中还进行了氡及其子体浓度的连续测量，以研究它们的时间变化。结果表明，氡及其子体浓度随工作活动的进行而沿着变化。当人们工作时，由于空调，它们通常较低，而在空调停止后，它们会稳步上升。在考虑家庭和工作场所的行动水平时，从辐射防护的角度来看，应注意年剂量。年剂量通常是通过使用蚀刻径迹探测器等被动装置对氡浓度进行长期测量来估计的。由于其阅读对应于长期平均浓度，而与工作时间无关，因此年剂量将被高估。在考虑工作时间后比较真实的剂量时，它们相差2倍以上。
A series of measurements were carried out to understand the characteristics of radon and its progeny in air-conditioned office buildings. Long-term measurements of radon were made with etched track detectors. Continuous measurements of radon and its progeny concentrations were also conducted in some buildings to study their temporal variations. The results show that radon and its progeny concentrations routinely varied along with the working activities. They are generally low while people are working, due to air conditioning, whereas they rise steadily after the air conditioning stops. When considering action levels not only in homes but also workplaces, attention should be paid to annual doses from the viewpoint of radiation protection. The annual dose is generally estimated with a long-term measurement of radon concentration using a passive device such as an etched track detector. Since its reading corresponds to a long-term average concentration regardless of working hours, but, the annual dose will be overestimated. When comparing a real dose after considering the working hours, they differ by a factor of more than 2.