镁铁-超镁铁岩铼-锇同位素体系分析方法

Study on Analytical Method for Re-Os Isotopic System in Mafic-Ultramafic Rocks

摘要: 通过试验建立了镁铁-超镁铁岩Re-Os同位素体系分析方法，包括Re-Os的化学分离纯化流程，Re同位素比值的电感耦合等离子体质谱测量方法和Os同位素比值的负离子热电离质谱测量方法。化学流程包括Carius管溶样，小型蒸馏分离Os，微蒸馏纯化Os，阴离子交换法分离、纯化Re。用该流程测定了汉诺坝幔源橄榄岩、辉石岩捕虏体和大别山饶拔寨超镁铁岩样品的Re、Os含量和Os同位素比值。

Abstract: The analytical method for Re-Os isotopic system in Mafic-Ultramafic rocks was established in our laboratory. Sample digestion, chemical separation and purification of Re and Os, as well as the determination of Re isotope ratio by ICP-MS and determination