SEM-EDS法检测土壤微粒元素含量  

Element Content Detection of Soil Micro-Particles by SEM-EDS Method

作　　者：颜敏 朱加良 曲国峰 刘星泉 黄宇[1] 徐子虚 王艺舟 韩纪锋 钱森[3] YAN Min;ZHU Jia-liang;QU Guo-feng;LIU Xing-quan;HUANG Yu;XU Zi-xu;WANG Yi-zhou;HAN Ji-feng;QIAN Sen(Key Laboratory of Radiation Physics and Technology of the Ministry of Education,Institute of Nuclear Science and Technology,Sichuan University,Chengdu 610064,China;Science and Technology on Reactor System Design Technology laboratory,Chengdu 610213,China;Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]四川大学原子核科学技术研究所辐射物理及技术教育部重点实验室,成都610064 [2]核反应堆系统设计技术重点实验室,成都610213 [3]中国科学院高能物理研究所,北京100049

出　　处：《核电子学与探测技术》2021年第6期942-946,共5页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金(11575121);中央高校基本科研业务费专项资助。

摘　　要：粒径在微米量级的粉尘微粒由于极易通过呼吸、食入或皮肤接触等途径进入人体而危害人类健康,已逐渐成为环境安全领域的一个重要问题,而不同粒径微粒中有害元素含量是衡量其对人体危害的重要依据。采用SEM-EDS法对国家标准土壤样品进行研究,获得了5~50μm的粒径范围内标准土壤样品中Si、Al、Fe和Cu元素含量的粒径分布规律。通过使用含Si微米颗粒进行定标,发现在该粒径范围内土壤微粒中的Si元素含量同标准物质认定证书中给出的含量基本相同。实验结果表明:SEM-EDS法可对粒径在μm量级的颗粒物质进行精确的元素含量分析。Dust micro-particles with the size of micrometers,were very important for environmental safety because they can enter the human body easily through breathing,ingestion,or skin contact and endanger human health.It is important to study the harmful elements content in particles with different size,which is a significant basis for studying its harm to the human.This subject studied the content of several typical elements in individual micro-particle of two national standard soil samples using SEM-EDS method.By using Silicon compound micron particles to calibrate the system,it is found that the Si element content in the soil particles is the same as the content given in the standard material certificate.The experimental results show that the SEM-EDS method can accurately analyze the element content of soil micro-particles with a particle size of micrometers.

关 键 词：核探测技术 土壤 SEM-EDS法 粒径 元素含量 

分 类 号：TL81[核科学技术—核技术及应用]