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Erschienen in: Environmental Earth Sciences 21/2018

01.11.2018 | Original Article

Study on the natural radioactivity level of stone coal-bearing strata in East China

verfasst von: Naizheng Xu, Xinxiang Wei, Fuxiang Kuang, Linxi Zhang, Hongying Liu

Erschienen in: Environmental Earth Sciences | Ausgabe 21/2018

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Abstract

Based on γ-radiation dose rate and radon concentration measurements and 238U, 232Th, 226Ra, and 40K radionuclide testing, this study identifies the radioactive anomalies of stone coal-bearing strata in East China and evaluates the natural radioactivity levels in the air, solid, water and plant media in the typical area of the regional stone coal-bearing layers. The stone coal-bearing strata in East China occur in the lower Cambrian system along the margin of the Yangtze block; additionally, the radioactive anomaly area is sporadically distributed in the stone coal-bearing layers. The background values of 238U, 232Th, 226Ra, and 40K are higher in the stone coal-bearing areas, and the spatial distribution of these natural radionuclides shows significant variability. 238U and 226Ra clearly accumulate in the coal, coal gangue and soil and are the main sources of the environmental radiation in coal mines. The γ-radiation shows a higher background value in the stone coal-bearing area, and this radioactive pollution cannot be ignored. Typically, the effective dose of γ-radiation exceeds the limit value of 5 mSv/a, and the total α and total β concentrations of the groundwater are 10–30 times the limit value at some points. The residents near the mining area are subjected to a higher radiation dose, and the groundwater, building materials, and plants have been contaminated by the radioactive pollution sporadically through time. It is necessary to strengthen the monitoring work of radioactive environments and to take appropriate control measures.

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Metadaten
Titel
Study on the natural radioactivity level of stone coal-bearing strata in East China
verfasst von
Naizheng Xu
Xinxiang Wei
Fuxiang Kuang
Linxi Zhang
Hongying Liu
Publikationsdatum
01.11.2018
Verlag
Springer Berlin Heidelberg
Erschienen in
Environmental Earth Sciences / Ausgabe 21/2018
Print ISSN: 1866-6280
Elektronische ISSN: 1866-6299
DOI
https://doi.org/10.1007/s12665-018-7916-2

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