Measurement of radon exhalation rates from some building materials used in Serbian construction

被引：20
|
作者：
Stajic, J. M. [1 ]
Nikezic, D. [1 ]
机构：
[1] Univ Kragujevac, Fac Sci, Kragujevac 34000, Serbia
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2015年 / 303卷 / 03期
关键词：
Radon exhalation rate; Building materials; RAD7; NATURAL RADIOACTIVITY; ACCUMULATION CHAMBERS; EMANATION; RN-222; COEFFICIENT; HUMIDITY; EXPOSURE;
D O I：
10.1007/s10967-014-3726-5
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The rates of radon exhalation from building materials available on the Serbian market were measured using RAD7 device. Fitting the growth curves of radon activity concentration provided the information on radon exhalation rates from the samples. The results were quite low and they ranged from 1.4 to 855 mBq m(-2) h(-1) for surface exhalation rate and from 1.3 to 11.4 mBq kg(-1) h(-1) for mass exhalation rate. The effect of moisture on radon exhalation was confirmed. For powdered samples with dimensions smaller than radon diffusion length, the mass exhalation rate is independent of sample mass and its exhalation area.
引用
收藏
页码：1943 / 1947
页数：5
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