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Radioactivity and health risk of drinking water around Bayanwula uranium mining area |
BAI Haribala1,2, TUO Fei3, HU Bi-tao1, WANG Cheng-guo2, SAI Ge-ri-le-man-da-hu2, ZHANG Shuai2, XU Xiao2, BAO Shan-hu4, LI Yu-hong1 |
1. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China;
2. Inner Mongolia Center for Disease Control and Prevention, Huhhot 010031, China;
3. College of Geographical Science, Inner Mongolia Normal University, Huhhot 010022, China;
4. National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, BeiJing 100088, China |
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Abstract The total of 37 drinking water samples from the wells around Bayanwula prospective uranium mining area were collected to estimate the lifetime health risks for the residents. The concentrations of gross α, gross β, 238U, 232Th, 226 Ra and 40K were analyzed. The method recommended by World Health Organization (WHO) was used to calculate the adult annual effective dose via the consumption of thedrinking water. The cancer risk coefficients recommended by the United States Environmental Protection Agency (USEPA) were applied to assess the life-time health risk cancer for the residents. The radioactivity levels in the drinking water samples were compared to the data obtained from other part of the world. The results indicated thatthe average activity concentrations of gross α and gross β were 1.059Bq/L and 0.624Bq/L, respectively, which showed the 81.1% and 5.4% out of the 37water samples exceed the screening values 0.5Bq/L and 1.0Bq/L recommended by WHO, respectively. The activity concentrations of 238U, 232Th, 226Ra and 40K were determined to be (2.349±1.593), (0.058±0.041), (0.070±0.057) and (0.571±0.419)Bq/L, respectively. The annual effective dose to adult via the consumption of the drinking water was calculated to be 0.104mSv/aand the lifetime cancer riskwas assessed to 2.4×10-11 for the residents. In conclusion, the activity concentrations in drinking water around Bayanwula uranium mining area were at normal level and the radioactivity health risk to the local residentswas at very low level.
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Received: 05 March 2017
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