离子探针测试方法及其在矿物微区微量元素和同位素分析中的应用

Ion Microprobe: Techniques and Applications in Cosmochemistry and Geochemistry

离子探针能在单矿物颗粒内进行微区原位直接分析工作,主离子束斑大小可聚焦在5μm以内,可以检测到10-9级的微量元素,同位素分析的精度高达1‰,在地球科学领域有着广泛的应用。详细叙述了离子探针的工作原理以及微量元素成分和同位素组成的测试方法,列举了其在天体化学和地球化学研究领域的主要应用,总结了一系列的研究成果,并首次公开发表离子探针微量元素测试技术研发工作中取得的一些实验结果。

Ion microprobe offers in situ analyses of trace element abundances and isotopic compositions with a micrometer spatial resolution. It has a wide range of cosmochemical and geochemical applications. The technique has been particularly important in meteorite research where isotopic and chemical abundance anomalies are at their largest. This paper highlights the successful application of ion microprobe to a variety of research areas in cosmochemistry and geochemistry, and reports 26 major and trace element sensitivity factors determined in 11 silicate standards.