Measurement of plutonium in surface corals by Accelerator Mass Spectrometry
Prof. Huijuan Wang1, prof Yongjing Guan1, Mr. Xiayu Zhan1,2, Prof Ming He2, Dr. Qingzhang Zhao2, Mr. Jingyu Mai1, Mrs. Chunping Huang1, Prof Xianggao Wang1, Prof Zhiyong Liu3, Mr. Mario De Cesare4
1Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University, Nanning, China, 2China Institute of Atomic Energy, Beijing, China, 3School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, China, 4Department of Diagnostic Methodologies and Measurement Techniques, CIRA, Italian Aerospace Research Centre,, Capua, Italy
In order to measure the activity concentration and source of Pu around Weizhou land in Beibu Gulf, China, plutonium isotopes in the different surface coral species were determined using accelerator mass spectrometry at CIAE. The activity concentration of 239Pu in the coral is determined to be in the range of 1.56–24.92 mBq/kg. The results indicate that different coral species have different 239+240Pu activity concentrations, this may depend on the different Pu absorption capacity of coral species. The 240Pu/239Pu atom ratios in the samples range from 0.173 to 0.225, indicating that the main source of plutonium in this area is global fallout while the contribution of PPG is about 30%.
Guan Yongjing, professor at the College of Physical Science and Technology, Guangxi University. My research interests include AMS detection method, actinide measurement and application. Recent interest is the distribution and influencing factors of artificial actinides such as 237Np and 239,240 Pu in the environment.