Investigation of gross α and β radioactivity levels in foods around Fuqing nuclear power plant site
10.3760/cma.j.cn112271-20211025-00421
- VernacularTitle:福清核电厂周边食品中总α和总β放射性水平调查与分析
- Author:
Yan ZHANG
1
;
Weiqi WEI
;
Hao WANG
;
Jia LIU
;
Wenjuan ZHENG
;
Qishan ZHENG
;
Baoying LIU
Author Information
1. 福建省职业病与化学中毒预防控制中心，福州 350025
- Keywords:
Fuqing Nuclear Power Plant;
Food;
Gross α;
Gross β;
Kalium-40
- From:
Chinese Journal of Radiological Medicine and Protection
2022;42(6):443-447
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To ascertain the activity concentration of gross α and β in foods around Fuqing nuclear power plant (NPP) site.Methods:Totally 167 food samples of 25 kinds within 6 categories were collected from the surveillance areas and control areas around Fuqing NPP site. The total radioactivity was analyzed using the food samples. Paired rank sum test was used to determine the influence of the operation of Fuqing NPP on the total radioactivity in foods in surrounding areas. The multiple local rank sum test was used to assess the difference in total radioactivity in different types of foods.Results:The average gross α in poultry meat, vegetables, crops, aquatic products, milk and tea was 0.65, 1.96, 1.41, 3.80, 1.33, 7.67 Bq/kg in surveillance areas and 0.56, 3.24, 2.04, 3.70, 2.24, 9.05 Bq/kg in reference areas, respectively, around Fuqing NPP site. The average gross β (subtracting 40K) in poultry meat, vegetables, crops, aquatic products, milk and tea was 7.0, 10.5, 6.1, 23.5, 24.7, 8.6 Bq/kg in surveillance areas and 7.4, 8.3, 14.5, 22.1, 21.3, 11.0 Bq/kg in reference areas, respectively, around Fuqing NPP site. The Wilcoxon paired rank test showed that there was no significant difference in the gross α and β in foods between surveillance and reference areas around Fuqing NPP site ( P>0.05). The Kruskal-Wallis H test showed that the radioactivity of gross α and β in different foods was statistically significant ( χ2=23.325, 13.918, P<0.05). Conclusions:The increase was not found in total radioactivity in the surrounding foods since the operation of Fuqing NPP in 2015.
