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

被引：29

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

页码：153 / 160

页数：8