Characterization of Japanese wooden houses with enhanced radon and thoron concentrations.
Characterization of Japanese wooden houses with enhanced radon and thoron concentrations.
复制标题
DOI：
10.1097/00004032-199403000-00007
复制
发表时间：
1994-03
期刊：
影响因子：
2.2
通讯作者：
M. Doi;S. Kobayashi
中科院分区：
文献类型：
--
作者：
M. Doi;S. Kobayashi
1992年用氡-钍射气鉴别剂量计对广岛县21户住宅的42个房间进行了室内钍射气和氡浓度的测量。调查估计，室内平均钍射气浓度为84.7 +/- 15.6 Bq m-3，距离内墙20厘米处的氡浓度为25.6 +/- 1.1 Bq m-3。结果表明，日式木结构住宅室内存在潜在的钍射气危害。多变量回归分析的一些因素，每个房子的特点和浓度的氡和钍射气的建议，增强浓度的室内钍射气经常观察到一个典型的日式房间内的土墙和榻榻米地板。对这些房间的特征分析表明，这些房间的钍射气含量较高，而泥基石膏墙材料可能是其来源。
Indoor thoron and radon concentrations were surveyed in the 42 rooms of 21 houses in Hiroshima Prefecture with a radon-thoron discriminative dosimeter in 1992. The survey estimated the average indoor thoron concentration to be 84.7 +/- 15.6 Bq m-3 and that of radon to be 25.6 +/- 1.1 Bq m-3 at 20 cm from the interior wall. The results indicated the potential risk of indoor thoron in the Japanese style wooden houses. Multivariate regression analysis among some factors which characterize each of the houses examined and concentrations of radon and thoron suggested that enhanced concentration of indoor thoron was often observed in a typical Japanese style room with interior soil wall and tatami flooring. Characterization of the rooms with enhanced levels of thoron showed that mud-based plaster wall material was probably the source.