上海黄浦江特定段水域放射性核素测定与评价

Measurement and Evaluation of Radionuclides in a Specific Section of the Huangpu River in Shanghai

为了解上海黄浦江特定段水域放射性核素U、Th、226Ra、210Po、210Pb含量等信息,根据黄浦江特定段水域及其支流分布情况,使用三点采样法布设15个采样点,共采集15个样品,优化了样品的处理及测定方法,评价了特定段水域放射性核素的测定结果。结果表明:汛期放射性核素的测量值高于枯水期,U、Th、226Ra、210Po、210Pb的测量值范围分别为0.73~1.05μg/L、0.32~0.57μg/L、0.67×10^(-2)~0.95×10^(-2)Bq/L、0.17×10^(-2)~0.37×10^(-2)Bq/L、0.95×10^(-2)~1.31×10^(-2)Bq/L,年待积有效剂量约为0.012 5mSv,该剂量远小于标准限值。

In order to understand the situation of radionuclides U,Th,226 Ra,210 Po,210 Pb in the specific section of the Huangpu River in Shanghai,according to the distribution of the Huangpu River and its tributaries,15 sampling points were arranged with the three-point sampling method,and a total of 15 samples were collected,and the traditional sample processing and determination methods were optimized.The results of radionuclide determination in specific sections were evaluated.The results showed that the measured values of radionuclides in the flood season were higher than those in the dry season.The measured values of U,Th,226 Ra,210 Po,210 Pb were 0.73-1.05μg/L,0.32-0.57μg/L,0.67×10^(-2)-0.95×10^(-2) Bq/L,0.17×10^(-2)-0.37×10^(-2) Bq/L,0.95×10^(-2)-1.31×10^(-2) Bq/L,the annual effective dose to be accumulated was about 0.0125 mSv,which was far less than the standard limit.