Rapid estimation of environmental radioactivity surrounding Xiangshan uranium deposits, Jiangxi province, Eastern China

• Autorzy: Gan N. , Cen K. , Ye R. , Li T.

Identyfikatory

DOI

10.2478/nuka-2018-0014

• Języki publikacji: EN

Abstrakty

EN

The surveys of terrestrial gamma dose rate, radon concentration indoor and in water and specific activity of radionuclides of soil were carried out in 14 villages and a town in Xiangshan uranium deposit and surrounding area, Jiangxi province, Eastern China, in 2017–2018, using a scintillator dosemeter, an ionization chamber and a high-purity germanium gamma spectrometer to study radiation status in these places after remediation. A radioactive hot spot was discovered in a village near the mining office, where specific activity of 238U, 226Ra, 232Th and 137Cs of soil was as high as 1433 ± 76 Bq/kg, 1210 ± 62 Bq/kg, 236 ± 13 Bq/kg and 17 ± 1.1 Bq/kg, respectively. The dose rate on a waste rock heap was about 2423 nGy/h. Approximately 50% of the houses in a village near the uranium mining site had radon concentrations that exceeded 160 Bq/m3 . There was a significant positive correlation between indoor radon concentration and outdoor gamma dose rate (R2 = 0.7876). The abnormal radon concentration was observed in a rising spring sample providing residents with tap water up to 127.1 Bq/l. Four tap water samples and three of five well water samples exceeded the limit of radon concentration of drinking water in China (11.1 Bq/l). The mean annual effective doses from gamma dose rate data were 0.86 mSv/y and 1.13 mSv/y for indoor radon. The study shows that there are some radioactively contaminated places surrounding the Xiangshan uranium mine. The local outdoor dose rate averages may be used to estimate local indoor radon concentrations.

Słowa kluczowe

EN

gamma dose rate; indoor radon; water radon; cesium; annual effective dose; Xiangshan uranium deposit

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2018
• Tom: Vol. 63, No. 4
• Strony: 113--121
• Opis fizyczny: Bibliogr. 30 poz., rys.

Twórcy

autor

Gan N.

• School of Earth Sciences and Resources China University of Geosciences (Beijing) Beijing, 100083, China
• Beijing Research Institute of Chemical Engineering and Metallurgy Beijing, 101149, China

autor

Cen K.

• School of Earth Sciences and Resources China University of Geosciences (Beijing) Beijing, 100083, China

autor

Ye R.

• School of Earth Sciences and Resources China University of Geosciences (Beijing) Beijing, 100083, China

autor

Li T.

• School of Geophysics and Information Technology China University of Geosciences (Beijing) Beijing, 100083, China

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).