| 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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| 关键词:LA-ICP-MS matrix normalization method inclusions micro-analysis reference materials geoscience application |
| 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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| Research on Quantitative Analysis of Elements by Laser Ablation Inductively Coupled Plasma Mass Spectr-ometry (LA-ICP-MS) and Its Application in Geosciences |
| 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. |
| FAN Chenzi,ZHAO Linghao,SUN Dongyang,HU Mingyue,YUAN Jihai,FAN Xingtao,ZHAN Xiuchun.2025.Research on Quantitative Analysis of Elements by Laser Ablation Inductively Coupled Plasma Mass Spectr-ometry (LA-ICP-MS) and Its Application in Geosciences[J].Acta Geoscientica Sinica,46(6):1039-1050. |
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