Enhancement of radon exposure in smoking areas |
| |
Authors: | Hayam A Abdel Ghany |
| |
Institution: | (1) Physics Department, Faculty of Girls for Art, Science and Education, Ain-Shams University, Cairo, Egypt |
| |
Abstract: | Radium-226 is a significant source of radon-222 which enters buildings through soil, construction materials or water supply.
When cigarette smoke is present, the radon daughters attach to smoke particles. Thus, the alpha radiation to a smoker’s lungs
from the natural radon daughters is increased because of smoking. To investigate whether the cigarette tobacco itself is a
potential source of indoor radon, the α potential energy exposure level contents of radon (222Rn, 3.82d) and Thoron (220Rn, 55.60s) were measured in 10 different cigarette tobacco samples using CR-39 solid-state nuclear track detectors (SSNTDs).
The results showed that the 222, 220Rn concentrations in these samples ranged from 128 to 266 and 49 to 148 Bqm−3, respectively. The radon concentrations emerged from all investigated samples were significantly higher than the background
level. Also, the annual equivalent doses from the samples were determined. The mean values of the equivalent dose were 3.51
(0.89) and 1.44 (0.08) mSvy−1, respectively. Measurement of the average indoor radon concentrations in 20 café rooms was, significantly, higher than 20
smoking-free residential houses. The result refers to the dual (chemical and radioactive) effect of smoking as a risk factor
for lung cancer. |
| |
Keywords: | 220 222Rn Tobacco Nuclear track detectors |
本文献已被 PubMed SpringerLink 等数据库收录! |
|