### Preparation of Plant 41Ca Tracer Samples for Accelerator Mass Spectrometry

ZHAO Qing-zhang1;JANG Ping-ping3;LIN De-yu4;YANG Xian-lin1;DOU Liang1;PANG Yi-jun1;WANG Xiao-ming1;ZHANG Hui1,5;YANG Xu-ran1;WU Shao-yong1;GAO Dong-sheng2;LI Ling2;WANG Lei2;SUN Ke-peng2;ZHOU Jun2;DONG Ke-jun1;HE Ming1

1. 1.China Institute of Atomic Energy, Beijing 102413, China; 2.Shandong Agricultural University, Tai’an 271018, China; 3.China Nuclear Power Engineering CO. LTD., Beijing 100840, China;4.China Nuclear Control System Engineering CO. LTD., Beijing 100176, China;5.Technical Physics Institute of Heilongjiang Academy of Sciences, Harbin 150086, China
• Online:2016-11-20 Published:2016-11-21

### 基于加速器质谱测量的41Ca植物示踪样品制备方法研究

1. 1.中国原子能科学研究院，北京102413；2.山东农业大学，山东 泰安271018；3.中国核电工程有限公司，北京100840；4.中核控制系统工程有限公司，北京100176；5.黑龙江科学院 技术物理研究所，黑龙江 哈尔滨150086

Abstract:

Calcium plays an important role in the metabolism of plants and animals. In this paper, the preparation method of plant 41Ca for accelerator mass spectrometry (AMS) measurement was developed for the first time in China. AMS, with its advantages of high sensitivity, small dose of radioactivity, high accuracy, large measuring range, and long tracer cycle, can be used to measure cosmogenic nuclide 41Ca , which has long half-life. The intensity of the beam in ion source is an important parameter for the sensitivity of AMS measurement. The high beam current can improve the sensitivity of AMS. The preparation methods of plant samples of 41Ca tracer were systematically studied to obtain high beam current using wet, dry and a combining method with wet and dry re-fluoride. A reliable preparation procedure of plant samples for 41Ca tracer and its optimization parameters were determined by testing beam currents of various samples and lay a foundation for the 41Ca-AMS technology at plant tracer applications.