Natural radioactivity level of associated bone-coal mining area in Zhejiang Province

Natural radioactivity level of associated bone-coal mining area in Zhejiang Province 1 first-author 1 1 1 1 1 Environmental Radiation Monitoring Station of Zhejiang Province, Hangzhou 310012 Environmental Radiation Monitoring Station of Zhejiang Province, Hangzhou 310012 The geographic distribution, γ-radiation level and specific activity of radionuclides of the bone-coal mines in Zhejiang Province were reported. The weighted average of γ-radiation dose rate of the bone-coal mines is 566 nGy/h for 107 main bone-coal mines. The weighted mean activity of 238 U, 226 Ra, 232 Th and 40 K in the samples are 949, 918, 34 and 554 Bq/kg for 171 samples of bone-coal, respectively. Bone-coal Natural radioactivity γ-radiation level Radionuclides References Jiang Xiwen , Liu Qiusheng , Li Ruixiang , et al . Radiation Protection (in Chinese) , 1989 , 9 ( 3 ): 181 Radiation Protection (in Chinese) Ye Jida , Kong Lingli , Li Yin , et al . Radiation Protection (in Chinese) , 2004 , 24 ( 1 ): 1 Radiation Protection (in Chinese) State Standard of PRC: 《Limit of Radionuclides in Building Materials》, GB6566-2001 , 2001 (in Chinese) X591,X837 2004-12-07 2005-10-01 2021-01-19 2005 Nuclear Science and Techniques 05 16