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夏小平: 大型二次离子质谱分析技术进展及应用
发布日期:2019-01-10  字号:   【打印

报告时间:2019年1月14日(星期一)16:30-17:30

报告地点:资环新宝6线路纬地楼3楼会议室

  夏小平 研究员

工作单位中国科新宝6线路广州地球化学研究所

举办单位:资源与环境工程新宝6线路

报告人简介

夏小平,男,中科院百人,研究员,博士生导师,2001年本科毕业于中国科学技术大学,2005年毕业于香港大学获博士学位,2006-2009年在香港大学做助理教授,2009年至今在中国科新宝6线路广州地球化学研究所同位素地球化学国家重点实验室工作。主要从事微区原位地球化学分析实验方法开发与应用研究,重点研发激光剥蚀等离子体质谱和二次离子质谱元素、同位素原位微区分析新技术新方法及其在华北克拉通早前寒武纪拼合、三江地区古特提斯演化等的地球科学应用研究。系统地研究了锆石金红石等含铀矿物的微区原位U-Pb、U-Th不平衡定年、锆石的Hf-O同位素原位微区测定、电气石的B同位素、黄铁矿等硫化物的S同位素原位微区测定的分析实验方法并应用于地球科学研究领域。这些实验研究成果在国际上处于领先地位,部分研究论文已发表在国际高水平杂志上。已发表SCI论文100多篇(第一作者/通讯作者论文14篇),SCI引用近5000次,单篇最高引用240次。会议摘要35篇。

报告简介

Secondary Ion Mass Spectrometry (SIMS) is a major technique employed in geochemistry and cosmochemistry. The basis of the secondary ion mass spectrometry (SIMS) technique is the phenomenon where bombardment of a solid by a primary ion beam generates secondary ions. The secondary ions, analyzed for their mass-to-charge (m/z) ratios in a mass spectrometer, in turn reflect some compositional attribute of the solid samples. SIMS is an enormously widespread technique in the physical sciences and has many uses, including ‘bulk’ chemical or isotopic analysis from microvolumes, imaging of element distributions, measuring compositional changes with depth, and surface molecular chemistry. The key advantages of SIMS are the ability to localize the analyses to the micro- and even nano-scale, the very low detection limits, and access to the entire periodic table. This talk will focus on current activities of the Guangzhou Institute of Geochemistry (GIG) large geometry SIMS facility, including analytical methodology development, standard reference material development and their geoscience applications including but not limited to the evolutions of the Paleotethys Ailaoshan ocean, Central Asian Orogenic Belt (CAOB), South China Block and genesis of iron oxide-copper-gold (IOCG) mineral deposit in Peru.

(毛静静/文)  
编辑:徐小红
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