辐射研究与辐射工艺学报2025，Vol.43Issue(2)：118-126,9.DOI:10.11889/j.1000-3436.2024-0082
2023年中国东海浙南段水流域放射性水平
Investigating radioactivity levels in the East China Sea Zhejiang South watershed in 2023
摘要
Abstract
The study aimes to comprehensively assess the radioactive levels in the East China Sea,Zhejiang South section in 2023,to provide reliable baseline data for the environmental monitoring and evaluation of the upcoming San'ao Nuclear Power Station.Quarterly collection and analysis of seawater,marine organisms,and seabed sediment samples from the target maritime area were performed to evaluate temporal and spatial variations in radioactive nuclides.The results revealed that the tritium activity in the seawater of the Zhejiang South section exhibited significant seasonal changes across four quarters,with activities of 0.33 Bq/L,0.38 Bq/L,0.39 Bq/L,and 0.26 Bq/L,respectively.The activity of alpha nuclides also exhibited seasonal fluctuations,with an annual average activity of 0.03 Bq/L.The tritium activity in the biological samples was low.The activity range of gamma nuclides in seabed sediment was as follows:238U(1.61‒9.32 Bq/kg),232Th(1.53‒7.29 Bq/kg),226Ra(1.08‒8.48 Bq/kg),40K(2.73‒8.72 Bq/kg),and 137Cs(1.02‒9.29 Bq/kg).Seasonal changes in ocean currents significantly affected the migration and accumulation of radioactive nuclides.The spatiotemporal variations in radioactive substances indicate that the behavior of nuclides in the ocean is controlled by complex environmental factors,such as ocean currents,temperature,and precipitation.关键词
东海/放射性核素/氚/α核素/γ核素Key words
East China Sea/Radionuclides/Tritium/α radionuclides/γ radionuclides分类
医药卫生引用本文复制引用
王天姿,刘晓冬,万新龙,任世刚,陈海滨..2023年中国东海浙南段水流域放射性水平[J].辐射研究与辐射工艺学报,2025,43(2):118-126,9.基金项目
苍南县科技局重大社会科技项目(苍科[2022]23号) Supported by Cangnan County Science and Technology Bureau Major Social Science and Technology Project(Cangke[2022]23) （苍科[2022]23号）
