Continuous measurement of radon exhalation rate of soil in Beijing
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To understand the level of radon exhalation rate from soil surface and its variation, a continuous measurement system was developed and applied for a field measurement in Beijing from April 2012 to February 2013. For seasonal variation, It was indicated by measurement results that radon exhalation rate was higher in spring (52.9 mBq m−2 s−1 in average) and lower in winter (17.0 mBq m−2 s−1 in average). The precipitation had a strong influence on the radon exhalation rate, usually radon exhalation rate increased quickly after rain. Daily variation of radon exhalation rate was also observed in spring, usually higher at noon and lower at midnight.
KeywordsRadon exhalation rate Continuous measurement Soil Precipitation
This work was supported by the National Natural Science Foundation of China (Grant No. 11205241).
- 1.UNSCEAR (2000) Sources and effects of ionizing radiation. UNSCEAR, Sweden, pp 1–8Google Scholar
- 3.Keller G, Folker KH, Muth H (1992) Method for the determination of 222Rn and 220Rn exhalation rate using alpha-spectroscopy. Radiat Prot Dosimetry 3:83–89Google Scholar
- 5.Keller G, Schutz M (1988) Radon exhalation from the soil. Radiat Prot Dosimetry 24:43–46Google Scholar
- 7.Nanping W, Lei X (2009) Level of radon exhalation rate from soil in some sedimentary and granite areas in China. J Nucl Sci Technol 46:305–309Google Scholar
- 9.Hosoda M, Ishikawa T, Sorimachi A (2011) Development and application of a continuous measurement system for radon exhalation rate. Rev Sci Instrum 82:101–105Google Scholar
- 10.UNSCEAR (1993) Sources and effects of ionizing radiation. UNSCEAR, Sweden, pp 45–54Google Scholar