Measurement of 1291 level around a Nuclear Power Plant by Accelerator Mass Spectrometer
129I is a long-lived (15.7M year) radioisotope of iodine. It can be used as a tracer for monitoring nuclear proliferation and the 1291/127I ratio can be used to evaluate the radiation contamination level. Nowadays a geat number of nuclear power plants will be built in China, but the data of 1291 concentration in environmental samples around nuclear power plants are limited. Accelerator Mass Spectrometer (AMS) whose detection limit is about 10-14, iS one of the best instruments for analyzing environmental samples. The methods of making 1291 target samples for AMS measurement from different type samples were studied, and the processing system for water and soil samples were established. Six surface seawater samples were collected at different distance away from a nuclear power plant in China. These samples were measured by Xian AMS. The ratios of 129I /127I in the seawater samples are between 0.829x10-10 and 9.451×10-10, and the average value is about 3.518×10-10.The ratios of 129I/127I in these samples are compared with other measurement results under different circumstances in other parts of the world. The results show that this nuclear power plant has not released superfluous 129I into environment after several years operation. Since the AMS and sample processing system are established, we will do much work on nuclear technology application with 1291 tracer.
Zhiwen Wanga Yukun Fan Chaohui He Huaibin Li Yaolin Zhao Ning Chen Luyuan Zhang Qi Liu Maoyi Luo Wangguo Liang
Xian JiaoTong University, No.28 Xianning West Road, Xian Shaanxi 710049, China Xian AMS center, N State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment,Chinese Academy Xian JiaoTong University, No.28 Xianning West Road, Xian Shaanxi 710049, China State Key Laborator
国际会议
18th International Conference on Nuclear Engineering(第18届国际核能工程大会 ICONE 18)
西安
英文
1-7
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）