| Zhu Yinying,Mou Sheng,Fan Fang,Wu Guoliang.Radionuclide concentration of rice and corn in some areas of Yunnan province[J].Chinese Journal of Radiological Medicine and Protection,2020,40(7):536-539 |
| Radionuclide concentration of rice and corn in some areas of Yunnan province |
| Received:February 03, 2020 |
| DOI：10.3760/cma.j.issn.0254-5098.2020.07.008 |
| KeyWords:Radioactivity Crops Radionuclide concentration Yunnan province |
| FundProject:云南省应用基础研究计划项目-青年项目（2017FD005） |
| Author Name | Affiliation | | Zhu Yinying | Department of Occupational and Radiological Health, Yunnan Center for Disease Control and Prevention, Kunming 650034, China | | Mou Sheng | Department of Occupational and Radiological Health, Yunnan Center for Disease Control and Prevention, Kunming 650034, China | | Fan Fang | Department of Occupational and Radiological Health, Yunnan Center for Disease Control and Prevention, Kunming 650034, China | | Wu Guoliang | Department of Occupational and Radiological Health, Yunnan Center for Disease Control and Prevention, Kunming 650034, China |
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| Abstract:: |
| Objective To investigate the radionuclide concentrations in rice and corn in some areas of Yunnan province, and enrich the baseline data on radioactivity level in food in Yunnan province, and assess the health risks to residents. Methods The samples of rice and corn collected from 20 counties in Yunnan province were determined by using gamma spectrometer under the national standards Gamma Spectrometry Method of Analysing Radionuclides In Biological Samples (GB/T 16145-1995), General Analytical Method of High-Purity Germanium Gamma Spectrometer (GB/T 11713-2015), Examination of Radioactive Materials for Foods-General Principle (GB 14883.1-2016) and Determination of Radionuclides in Soil by Gamma Spectrometry(GB/T11743-2013). The results were compared and evaluated. Results The average activity concentrations in rice were found to be 238U (0.416±0.403) Bq/kg, 32Th (0.045±0.034) Bq/kg, 226Ra (0.030±0.013) Bq/kg, 40K (28.4±18.8) Bq/kg and 137Cs (0.014±0.019) Bq/kg, respectively, and in corn to be 238U (0.308±0.230) Bq/kg, 232Th (0.035±0.031) Bq/kg, 226Ra (0.053±0.072) Bq/kg, 40K (56.8±38.6) Bq/kg, respectively. The specific activities of the 137Cs were lower than the detection lower limit. Conclusions The radionuclide concentration of 238U, 232Th, 226Ra, 40K and 137Cs in rice and corn in 20 counties of Yunnan province meets the national standards. The dose burden to the public will not affect human health. |
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