| Re-Os同位素组成测试方法及其应用进展 |
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| 引用本文： | 杨红梅,凌文黎.Re-Os同位素组成测试方法及其应用进展[J].地球科学进展,2006,21(10):1014-1024. |
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| 作者姓名： | 杨红梅 凌文黎 |
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| 作者单位： | 1. 中国地质大学地球科学学院,湖北,武汉,430074;宜昌地质矿产研究所,湖北,宜昌,443003
2. 中国地质大学地球科学学院,湖北,武汉,430074 |
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| 摘 要： | Re为中等不相容元素，Os则属强相容元素，与母子体均为不相容元素的Rb Sr、Sm Nd、U Th Pb等同位素体系相比，具亲铁、亲硫性的Re Os同位素体系在定年和示踪研究中显示出特殊性，受到了地学家高度重视，其应用正走向普及。总结和对比了近年来Re Os同位素分析中样品分解的不同方法（NiS火试金法、Carius管溶样法、高压灰化消解法、浸提法、水样处理法）、Os的分离（常规蒸馏、液溴和CCl4提取、快速低本底提取、小型蒸馏）与纯化流程（微蒸馏）、Os同位素比值质谱测定法（N TIMS、ICP MS、微区原位（in situ）分析）及随测定方法的改进Re Os同位素体系在地球科学研究中的应用进展。
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| 关 键 词： | Re-Os同位素 测试方法 应用 |
| 文章编号： | 1001-8166（2006）10-1014-11 |
| 收稿时间： | 2006-04-04 |
| 修稿时间： | 2006-04-042006-08-10 |
Progress of Measuring Method and Its Application for Re-Os Isotopic System |
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| YANG Hong-mei,LING Wen-li.Progress of Measuring Method and Its Application for Re-Os Isotopic System[J].Advance in Earth Sciences,2006,21(10):1014-1024. |
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| Authors: | YANG Hong-mei LING Wen-li |
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| Institution: | 1.Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074,China;2.Yichang Institute of Geology and Mineral Resources, China Geological Survey, Yichang 443003,China |
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| Abstract: | Re is moderately incompatible element,while Os is highly compatible.As they are highly siderophile,Re-Os isotopic system can provide unique insight in dating and tracing research compared to other long-lived radiogenic isotope systems(e.g.Rb-Sr,Sm-Nd,U-Th-Pb) which involve lithophile elements partitioning into silicate rather than metal or sulfide.The geologists have attached much importance to the particularity of Re-Os isotopic system and its application is getting popular.The author sums up and compares several kinds of sample digestion methods for Re-Os isotope analysis(NiS fire assay,Carius tube digestion,high pressure asher,leaching,and water disposing), the procedures of separating Os(conventional distillation,liquid Br_(2) and CCl_(4) or CHCl_(3) extraction,rapid extraction with low blank,minitype distillation) and purifying Os(microdistillation),improved mass spectrometry measurement of Os isotope(NTIMS,ICP-MS,in situ) and its application progress in the earth science research brought along the improved measuring method. |
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| Keywords: | Re-Os isotopic system Measuring method Application |
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