| 激光剥蚀电感耦合等离子体质谱(LA-ICP-MS)元素定量分析方法开发及其地学应用 |
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| 引用本文：范晨子,赵令浩,孙冬阳,胡明月,袁继海,樊兴涛,詹秀春.2025.激光剥蚀电感耦合等离子体质谱(LA-ICP-MS)元素定量分析方法开发及其地学应用[J].地球学报,46(6):1039-1050. |
| DOI：10.3975/cagsb.2025.071521 |
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| 基金项目:科技部创新性专项(编号: 2009IM032200)、国家重点研发计划子课题项目(编号: 2021YFC2903101)、国家自然科学基金青年基金项目(编号: 41302030; 4140030364; 41203022)、中国地质调查局项目(编号: 12120113015000; DD20242852);中国地质科学院基本科研重点项目(编号: YYWF201619; JKYZD202324; CSJ201901; CSJ202201);矿物加工科学与技术国家重点实验室开放基金项目(编号: BGRIMM-KJSKL-2022-09) |
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| 中文摘要:激光剥蚀电感耦合等离子质谱技术(LA-ICP-MS)是地质科学领域最前沿的分析技术之一。研究组基于LA-ICP-MS建立了基体归一定量校准技术, 并成功优化应用于硫化物“矿物桥”、碳酸盐和稀土氟碳酸盐等不同基体的样品分析方法开发。针对单个熔融包裹体可直接对成分复杂的矿物表面100 μm以下以多相形式存在的熔体包裹体进行整体分析; 通过配制多元素标准溶液填充至纯石英毛细管中, 制成人工流体包裹体外部参考物质来实现对石盐等天然流体包裹体的定量分析。成功研制了CGSG硅酸盐、CGSP碳酸盐、CGSP-P磷酸盐系列等微区分析校准物质, 被国际权威的地质和环境标准物质数据库GeoReM收录并在首页推荐, 国内外多家高校及科研机构将其作为质量监控标准。应用自主开发微区方法促进地质新发现和新认识, 助力“氟碳钙钕矿”新矿物的发现; 完成了锰银型矿床锰矿物中“不可见银”的含量分布、物相组成、微细粒径、价态形式及其赋存状态特征与形成机理研究; 建立多种副矿物U-Pb定年方法及关键微量元素定量分析技术体系, 研究榍石在不同体系中微量元素特征, 为认识和探讨相关地质过程奠定基础。 |
| 中文关键词:LA-ICP-MS 基体归一定量技术 包裹体 微区分析校准物质 地学应用 |
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| Research on Quantitative Analysis of Elements by Laser Ablation Inductively Coupled Plasma Mass Spectr-ometry (LA-ICP-MS) and Its Application in Geosciences |
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| Abstract:Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) is one of the most advanced analytical techniques in geological sciences. Our research group has established a matrix normalization calibration method based on LA-ICP-MS and successfully optimized the methods for analyzing sulfide “mineral bridges,” carbonates, and rare earth fluorocarbonates. Multi-phase melt inclusions located up to 100 μm beneath the surface of complex minerals can be analyzed. The quantitative analysis of fluid inclusions, such as halite, can be realized by filling the pure quartz capillary with a multi-element standard solution to create artificial fluid inclusions as an external standard. CGSG silicate, CGSP carbonate, CGSP-P phosphate series, and other micro-analysis reference materials have been successfully developed. These materials have been included in the GeoReM database and are recommended on the database home page, and many universities and scientific research institutions have used them as quality control standards. These self-developed micro-analysis methods have been applied to promote new geological discoveries and to enhance our comprehension of unsolved problems in geology. They have also assisted in the discovery of a new mineral “parisite-(Nd).” Moreover, the content distribution, phase composition, fine particle size, valence form, occurrence state characteristics, and formation mechanism of “invisible silver” in manganese minerals of Mn-Ag ore deposits were studied using micro-analysis methods. Additionally, we establish U-Pb dating methods and a technical system for quantitative analysis of key trace elements for multiple accessory minerals. The U-Pb dating and quantitative characterization of the trace elements in titanite lay a foundation for understanding and exploring its related geological processes. |
| keywords:LA-ICP-MS matrix normalization method inclusions micro-analysis reference materials geoscience application |
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