An analysis of the investigation results of radionuclide content in food in Chongqing, China
10.13491/j.issn.1004-714X.2023.04.013
- VernacularTitle:重庆市食品放射性核素含量调查结果分析
- Author:
Qiang HUANG
1
;
Wei LI
1
;
Kui LI
1
Author Information
1. Chongqing Center for Disease Control and Prevention, Chongqing 400042 China.
- Publication Type:OriginalArticles
- Keywords:
Food;
Radioactivity level;
Intake estimation;
Dose estimation.
- From:
Chinese Journal of Radiological Health
2023;32(4):433-437
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the radionuclide content in food in Chongqing, China by conducting a survey on the radioactivity in food. Methods A total of 114 samples of vegetables, grain, milk powder, and tea were collected in Chongqing. The samples were dried, pulverized into powder, added into Marinelli beakers, and then measured for radionuclides using a high-purity germanium gamma spectrometer (GEM40P4-765). Results The mean activity concentrations of natural radionuclides 238U, 232Th, 226Ra, and 40K in food in Chongqing were (0.396 ± 0.510), (0.199 ± 0.296), (0.140 ± 0.209), and (119.250 ± 105.470) Bq/kg, respectively. The contents of radionuclides in different foods were significantly different (P < 0.05). The mean activity concentration of the artificial radionuclide 137Cs was (0.091 ± 0.308) Bq/kg, and the mean activity concentration of 90Sr measured in nine tea samples was (1.243 ± 0.860) Bq/kg. Conclusion The contents of radionuclides in food in Chongqing are lower than the national standard limits, but the safety of radioactivity in food still needs to be taken seriously, and long-term surveillance of radioactivity in food is needed.
