相关实验视频

Updated: May 10, 2025

3D Depth Profile Reconstruction of Segregated Impurities Using Secondary Ion Mass Spectrometry

Published on: April 29, 2020

通过飞行时间二次离子质谱法 (tof-SIMS) 量化研究素

¹Laboratory of Mineralization and Dynamics, College of Earth Sciences and Land Resources, Chang'an University, 126 Yanta Road, Xi'an 710054, China.

Molecules (Basel, Switzerland)

|April 26, 2025

概括

这项研究验证了飞行时间二次离子质谱法 (tof-SIMS) 用于使用矩阵匹配校准来量化斯波杜中的元素. 该方法准确地确定了主要和次要元素,显示了微量元素分析的前景.

科学领域:

地质化学地质化学
分析化学分析化学
材料科学材料科学材料科学

背景情况:

精确的元素量化斯波杜对于其工业应用至关重要,特别是在提取中.
对于复杂的矿物质矩阵,传统方法在精度和范围上可能存在局限性.
飞行时间二次离子质谱 (tof-SIMS) 提供高灵敏度,但需要强大的校准策略.

研究的目的:

为了评估tof-SIMS对spodumene中主要和次要元素的定量可行性.
为了比较不同的校准方法,包括具有内部元素 (Al或Si) 的矩阵匹配和非矩阵匹配标准.
使用tof-SIMS.建立一种可靠的分析协议,用于使用tof-SIMS.进行素元素分析.

主要方法:

采用矩阵匹配标准校准方法,将烯503R作为外部标准.
采用样品标准括号方法来确定对Li,Na,Al,Si,Mn和Fe的敏感性.
在正离子模式下采集的信号强度,以100μm的光尺寸.

主要成果:

当使用Al或Si作为内部标准元素时,没有观察到度结果的显著差异.
矩阵Li₂O,Al₂O₃,SiO₂的度与LA-ICPMS和EPMA分析 (95%置信水平) 一致良好.
通过tof-SIMS确定的小元素度 (Na₂O,MnO,FeO) 与LA-ICPMS参考值 (比率0.98-1.02) 一致.

结论:

推采用矩阵匹配标准校准方法,以通过tof-SIMS准确地确定斯波杜的元素.
开发的方法显示了主要和次要元素的高精度,验证了其定量可行性.
这项工作为未来应用tof-SIMS在斯波杜和类似地质材料中微量元素量化中的应用铺平了道路.

关键词:

电离效率是电离的效率.根据矩阵匹配的标准校准.斯波杜烯的量化方法多个SIMS的SIMS.

更多相关视频

Atom Probe Tomography Analysis of Exsolved Mineral Phases

Atom Probe Tomography Analysis of Exsolved Mineral Phases

Published on: October 25, 2019

Imaging Corrosion at the Metal-Paint Interface Using Time-of-Flight Secondary Ion Mass Spectrometry

Imaging Corrosion at the Metal-Paint Interface Using Time-of-Flight Secondary Ion Mass Spectrometry

Published on: May 6, 2019

相关概念视频

Tandem Mass Spectrometry

Tandem Mass Spectrometry

Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and signal-to-noise ratio for the analyte. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.
Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called collision-induced...

Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview

Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview

In inductively coupled plasma–mass spectrometry (ICP–MS), an inductively coupled plasma (ICP) torch is used as an atomizer and ionizer. Solid samples are dissolved and volatilized before being introduced into the high-temperature argon plasma, while solution samples are nebulized and passed through the high-temperature argon plasma. Plasma dissociates the analytes and ionizes their component atoms to form a mixture of positive ions and molecular species. The positive ions are then...