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The investigation on the radioactivity level of 90Sr in tea leaves in the vicinity of Ningde nuclear power plant |
ZHENG Qishan1, ZHANG Yan1, ZHENG Senxing1, HUANG Lihua1, LIU Jia1, FENG Yajuan1, WANG Denan2 |
1. Fujian Center for Prevention and Control of Occupational Diseases and Chemical Poisoning, Fuzhou 350025 China; 2. Fuding Center for Diseases Prevention and Control, Fuding 355200 China |
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Abstract Objective To investigation the radioactivity level of 90Sr in tea leaves within and outside 30 km range of Ningde nuclear power plant.Methods The tea leaves within and outside the 30 km range of Ningde Nuclear Power Plant were collected from 2013 to 2018. According to“Radiochemical analysis of strontium-90 in water and ash of biological samples” (HJ 815—2016), the separation and analysis of 90Sr-90Y were carried outusing the method of di (2-ethylhexyl) phosphate (HDEHP) chromatography.Results During the period of 2013-2018, the radioactivity concentrations of 90Sr in the tea leaves within the range of 30 km around the Ningde nuclear power plant were 0.486~13.29 Bq/kg and that of 90Sr in the tea leaves outside the range of 30 km around the nuclear power station were 1.021~17.19 Bq/kg.Conclusion During the six years of operation in Ningde Nuclear Power Plant, there was no increase in the radioactivity level of 90Sr in the tea leaves around the nuclear power plant.
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Received: 20 November 2020
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