Estimation of 222Rn release from the phosphogypsum board used in housing panels

被引：28
|
作者：
Jang, M
Kang, CS
Moon, JH
机构：
[1] Korea Inst Nucl Safety, Radiat Safety Ctr, Taejon 305338, South Korea
[2] Seoul Natl Univ, Dept Nucl Engn, Seoul 151742, South Korea
来源：
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 2005年 / 80卷 / 02期
关键词：
radon; phosphogypsum board; back diffusion;
D O I：
10.1016/j.jenvrad.2004.08.010
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Phosphogypsum board is a popular construction material used for housing panels in Korea. Phosphogypsum often contains Ra-226 which decays into Rn-222 through an a transformation. Rn-222 emanated from the Ra-226-bearing phosphogypsum board has drawn the public concern due to its potential radiological impacts to indoor occupants. The emanation rate of Rn-222 from the board is estimated in this paper. A mathematical model of the emanation rate of Rn-222 from the board is presented and validated through a series of experiments. The back diffusion effect due to accumulation of Rn-222-laden air was incorporated in the model and found to have a strong impact on the Rn-222 emanation characteristics. (C) 2004 Published by Elsevier Ltd.
引用
收藏
页码：153 / 160
页数：8
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