作者单位:Cheng Xin,Shi Zeming(Chengdu University of Technology Uuclear Technology and Automation Engineering)程馨,施泽明,张成江(成都理工大学核技术与自动化工程学院地球化学实验室,四川 成都610059)Zhang Chengjiang(Chengdu University of Technology Uuclear Technology and Automation Engineering College earth Chemistry Labratory, Chengdu 610059, China)