| 锆石Hf同位素：MC-ICP-MS和LA-MC-ICP-MS分析结果的比较 |
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| 引用本文： | 张磊,韩宝福,古丽冰,张文慧,谢烈文,杨岳衡.锆石Hf同位素：MC-ICP-MS和LA-MC-ICP-MS分析结果的比较[J].岩石学报,2006,22(2):510-512. |
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| 作者姓名： | 张磊 韩宝福 古丽冰 张文慧 谢烈文 杨岳衡 |
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| 作者单位： | 1. 北京大学造山带与地壳演化教育部重点实验室,地球与空间科学学院,北京,100871
2. 中国科学院地质与地球物理研究所,北京,100029 |
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| 基金项目： | 国家重大基础研究规划项目（2001CB409802）和教育部“跨世纪人才培养计划”资助成果 |
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| 摘 要： | 采用单柱离子色谱法高效提取锆石中的Hf元素，用MC—ICP—MS测定锆石Hf同位素组成。三个锆石样品及其平行样的分析结果显示，同一样品的Hf同位素组成在误差范围内高度一致，表明用单柱离子交换色谱法能够有效分离锆石的Hf元素，可以保证Hf同位素分析结果的再现。对比MC—ICP—MS和LA—MC—ICP—MS分析结果发现，同一样品锆石的Hf同位素在误差范围内一致，具有很好的可对比性。但对颗粒较小的锆石，缩小激光束斑使之不超出锆石颗粒的范围，能够获得更好的结果。
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| 关 键 词： | 锆石 Hf同位素 离子交换色谱法 LA-MC-ICP-MS MC-ICP-MS |
| 文章编号： | 1000-0569/2006/022(02)-0510-12 |
| 收稿时间： | 10 15 2005 12:00AM |
| 修稿时间： | 01 16 2006 12:00AM |
A comparison of zircon Hf isotope analyses by MC-ICP-MS and LA-MC-ICP-MS |
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| ZHANG Lei,HAN BaoFu,GU LiBing,ZHANG WenHui,XIE LieWen and YANG YueHeng.A comparison of zircon Hf isotope analyses by MC-ICP-MS and LA-MC-ICP-MS[J].Acta Petrologica Sinica,2006,22(2):510-512. |
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| Authors: | ZHANG Lei HAN BaoFu GU LiBing ZHANG WenHui XIE LieWen and YANG YueHeng |
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| Institution: | 1. Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education, School of Earth and Space Sciences, Peking University, Beijing 100871, China ;2. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China |
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| Abstract: | The single ion-exchange chromatography modified from Goolaerts et al.(2004)was utilized to separate Hf from three zircon samples and then Hf isotopes were determined by MC-ICP-MS.The duplicate analyses for each zircon samples yielded consistent ~(176) Hf/~(177) Hf ratios within error.This means that the single ion-exchange chromatography is an efficient method for separatiun of zircon Hf and the Hf isotopic compositions in the zircons from one rock sample can be reproduced by MC-ICP-MS.In addition,the consisteut Hf isotopic compositions within erro,can be produced by LA-MC-ICP-MS.For fine-grained zircons,however,more precise Hf isotopic ratios can be obtained by LA-MC-ICP-MS if the laser beam is reduced to fit the grain-size of zircons. |
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| Keywords: | Zircon Hf isotopes Ion-exchange chromatography LA-MC-ICP-MS MC-ICP-MS |
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