RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2017, Vol. 26 >> Issue (03): 419-427.doi: 10.11870/cjlyzyyhj201703012

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CONTAMINATION CHARACTERISTICS AND HEALTH RISK ASSESSMENT OF RADIONUCLIDE URANIUM IN RICE OF A URANIUM MINE IN EAST CHINA

XIANG Long1, LIU Ping-hui1,2, YANG Ying-ya1   

  1. 1. College of Earth Sciences, East China University of Technology, Nanchang 330031, China;
    2. Key Laboratory of Nuclear Resources and Environment, Ministry of Education, East China University of Technology, Nanchang 330031, China
  • Received:2016-06-27 Revised:2016-12-13 Online:2017-03-20
  • Supported by:
    National Natural Science Foundation of Chain (Grant No.41261081);Graduate Innovation Fund Project of Jiangxi Province (YC2015-S268);Natural Science Foundation of Jiangxi Province (2011ZBAB203009)

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Abstract: In order to detect the contamination and health risk of radionuclide uranium in rice from a uranium mine in East China, a total of 136 rice samples from uranium deposit area and contrast area were analyzed. The method of Single Factor Index was used for assessing rice and carcinogenic risk (CR) for health risk of radionuclide uranium. The results showed that:(1) The average uranium concentrations in rice were 1.46 ng·g-1, with an order of exploiting mine area > hydrometallurgy plant area > unexploited deposit area > abandoned mine area > the background values of Jiangxi Province > contrast area. (2) The average value of Single Factor Index (1.25) showed that the uranium contamination levels of rice in the whole uranium deposit area were mild concentration. The exploiting mine area and hydrometallurgy plant area were mild concentration and unpolluted in abandoned mine area and contrast area. (3) For the first time, the Slope factor(SF) of carcinogenic risk of rice in Jiangxi Province was 1.04×103(d·kg)·mg-1.The CR among adults and children in all sub regions both were exploiting mine area > hydrometallurgy plant area > unexploited deposit area > abandoned mine area > contrast area. By directly consuming rice, children might suffer a certain carcinogenic risk, and no risk for adults in unexploited deposit area, abandoned mine area and contrast area, a certain carcinogenic risk in exploiting mine area and hydrometallurgy plant.

Key words: uranium deposit area, rice, uranium contamination, risk assessment, East China

CLC Number: 

  • Q95
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