| 镁铁-超镁铁岩铼-锇同位素体系分析方法 |
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| 引用本文： | 孟庆,郑磊,夏琼霞,靳永斌,支霞臣.镁铁-超镁铁岩铼-锇同位素体系分析方法[J].岩矿测试,2004,23(2):92-96. |
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| 作者姓名： | 孟庆 郑磊 夏琼霞 靳永斌 支霞臣 |
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| 作者单位： | 中国科学技术大学地球和空间科学学院,安徽,合肥,230026 |
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| 基金项目： | 国家自然科学基金项目(40173009)，国家高等教育博士点科研基金项目(1999035816) |
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| 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。
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| 关 键 词： | 铼-锇同位素体系 小型蒸馏 微蒸馏 阴离子交换 Carius管溶样 |
| 文章编号： | 0254-5357(2004)02-0092-05 |
Study on Analytical Method for Re-Os Isotopic System in Mafic-Ultramafic Rocks |
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| MENG Qing,ZHENG Lei,XIA Qiong-xi,JIN Yong-bin,ZHI Xia-chen.Study on Analytical Method for Re-Os Isotopic System in Mafic-Ultramafic Rocks[J].Rock and Mineral Analysis,2004,23(2):92-96. |
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| Authors: | MENG Qing ZHENG Lei XIA Qiong-xi JIN Yong-bin ZHI Xia-chen |
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| 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 of Os isotope ratio by NTIMS were involved. Samples were digested in Carius tube and Os was separated using mini-distillation and purified with micro-distillation method. Re was separated using anion exchange chromatography. The contents of Re,Os and Os isotope ratio of mantle-derived Hannuoba peridotite, pyroxenite xenolith and Raobazhai ultramafic rocks were determined by this method. |
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| Keywords: | Re-Os isotopic system Carius tube digestion mini-distillation micro-distillation anion exchange chromatography |
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