氧化物型含铀矿物微区原位Hf同位素分析技术研究进展
O562.6%O657.63; 近二十年来,Lu-Hf同位素分析技术得到了快速发展,为探讨岩石成因、物质来源及壳幔演化过程提供了重要手段.其中,锆石微区原位Hf同位素测定方法已经被广泛应用于同位素地球化学研究中.然而,金红石、锡石和铌铁矿等氧化物型含铀矿物激光剥蚀多接收等离子体质谱(LA-MC-ICPMS)Hf同位素测定方法发展较为缓慢.本文结合近年来相关研究工作,简要介绍副矿物Lu-Hf同位素分析技术的发展历史,系统梳理了金红石、锡石和铌铁矿等氧化物型含铀矿物原位Hf同位素测定方法研究的最新进展以及存在的问题.基于该方法目前存在的同质异位数干扰校正策略、质量监控标样的缺乏以及较低的Hf含量如...
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| Published in | 岩矿测试 Vol. 41; no. 5; pp. 691 - 703 |
|---|---|
| Main Authors | , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国地质调查局天津地质调查中心,天津 300170
2022
华北地质科技创新中心,天津 300170 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 0254-5357 |
| DOI | 10.15898/j.cnki.11-2131/td.202205180104 |
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| Abstract | O562.6%O657.63; 近二十年来,Lu-Hf同位素分析技术得到了快速发展,为探讨岩石成因、物质来源及壳幔演化过程提供了重要手段.其中,锆石微区原位Hf同位素测定方法已经被广泛应用于同位素地球化学研究中.然而,金红石、锡石和铌铁矿等氧化物型含铀矿物激光剥蚀多接收等离子体质谱(LA-MC-ICPMS)Hf同位素测定方法发展较为缓慢.本文结合近年来相关研究工作,简要介绍副矿物Lu-Hf同位素分析技术的发展历史,系统梳理了金红石、锡石和铌铁矿等氧化物型含铀矿物原位Hf同位素测定方法研究的最新进展以及存在的问题.基于该方法目前存在的同质异位数干扰校正策略、质量监控标样的缺乏以及较低的Hf含量如何提高分析灵敏度等技术难点进行了详细论述.氧化物型含铀矿物的Hf含量普遍不高,在测试时需要更大的剥蚀束斑直径.而飞秒激光具有剥蚀的样品粒径细小且均匀的特点,采用飞秒激光与LA-MC-ICPMS(fs-LA-MC-ICPMS)相结合,可以减小剥蚀束斑从而提高原位分析的空间分辨率,是未来氧化物型含铀矿物原位Hf同位素分析的发展方向. |
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| AbstractList | O562.6%O657.63; 近二十年来,Lu-Hf同位素分析技术得到了快速发展,为探讨岩石成因、物质来源及壳幔演化过程提供了重要手段.其中,锆石微区原位Hf同位素测定方法已经被广泛应用于同位素地球化学研究中.然而,金红石、锡石和铌铁矿等氧化物型含铀矿物激光剥蚀多接收等离子体质谱(LA-MC-ICPMS)Hf同位素测定方法发展较为缓慢.本文结合近年来相关研究工作,简要介绍副矿物Lu-Hf同位素分析技术的发展历史,系统梳理了金红石、锡石和铌铁矿等氧化物型含铀矿物原位Hf同位素测定方法研究的最新进展以及存在的问题.基于该方法目前存在的同质异位数干扰校正策略、质量监控标样的缺乏以及较低的Hf含量如何提高分析灵敏度等技术难点进行了详细论述.氧化物型含铀矿物的Hf含量普遍不高,在测试时需要更大的剥蚀束斑直径.而飞秒激光具有剥蚀的样品粒径细小且均匀的特点,采用飞秒激光与LA-MC-ICPMS(fs-LA-MC-ICPMS)相结合,可以减小剥蚀束斑从而提高原位分析的空间分辨率,是未来氧化物型含铀矿物原位Hf同位素分析的发展方向. |
| Author | 周红英 涂家润 崔玉荣 肖志斌 李国占 |
| AuthorAffiliation | 中国地质调查局天津地质调查中心,天津 300170;华北地质科技创新中心,天津 300170 |
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| Author_FL | TU Jiarun LI Guozhan ZHOU Hongying CUI Yurong XIAO Zhibin |
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| Author_xml | – sequence: 1 fullname: 崔玉荣 – sequence: 2 fullname: 肖志斌 – sequence: 3 fullname: 涂家润 – sequence: 4 fullname: 周红英 – sequence: 5 fullname: 李国占 |
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| Keywords | 锡石 金红石 Hf同位素 铌铁矿 同质异位数干扰校正 激光剥蚀多接收等离子体质谱法 |
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| PublicationTitle | 岩矿测试 |
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