Measurement of nationwide indoor Rn concentration in Japan

被引：50

作者：

Sanada, T ^{[1
]}

Fujimoto, K ^{[1
]}

Miyano, M ^{[1
]}

Doi, M ^{[1
]}

Tokonami, S ^{[1
]}

Uesugi, M ^{[1
]}

Takata, Y ^{[1
]}

机构：

[1] Japan Chem Anal Ctr, Inage Ku, Chiba 2630002, Japan

来源：

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 1999年 / 45卷 / 02期

关键词：

D O I：

10.1016/S0265-931X(98)00085-X

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 [工学]; 0830 [环境科学与工程];

摘要：

Indoor Rn (Rn-222) concentrations in Japan were measured to estimate the effective dose to the general public due to Rn and its progeny. Twenty houses were selected in each prefecture throughout Japan. As a total, 940 houses were subjected to the measurement using passive Rn monitors. The Rn monitor was installed in a bedroom or a living room in each house for four successive three-month periods. The annual mean indoor Rn concentration was estimated from the four measurements in each house. The mean, median and geometric means of indoor Rn concentration in Japan were obtained to be 15.5, 11.7 and 12.7 Bq m(-3), respectively. The Rn concentration shows approximately a log-normal distribution. Seasonal and structural dependence of Rn concentration was observed. The effective dose to the general public due to Rn and its progeny was estimated to be 0.45 mSv y(-1) in Japan. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：129 / 137

页数：9

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