Laser ablation sample introduction system for ICP-MS elemental analysis

用于 ICP-MS 元素分析的激光烧蚀样品引入系统

• 批准号: RTI-2017-00331
• 负责人: Brenan, James
• 金额: $ 10.93万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=616638
• 关键词: Laser; ablation; sample; introduction; system

The successful development of inductively coupled plasma mass spectrometers (ICP-MS) now makes it possible to perform rapid, precise abundance and isotope analysis of a large array of elements at very low concentration levels. This technology, combined with the ability to microsample solid materials by laser ablation (LA), produces an instrument (LA-ICP-MS) with the ability to measure element abundances in samples with a high degree of sensitivity and spatial resolution. Thus, LA-ICP-MS constitutes the single most powerful microanalytical technique currently available. An additional attribute of LA-ICP-MS is the capacity to perform time-resolved analyses, in which the element abundance is monitored during ablation into the sample. This technique provides essential information bearing on the homogeneity of the sample, the presence of submicron-scale inclusions of discrete phases, and can be used to quantify element abundances in materials that produce transient signals, such as fluid or melt inclusions or nanoparticles. In most cases, minimal sample preparation is required. A broad range of solids can be measured by this method, including transparent glasses, battery feedstock, semiconductors, bone, hair, mineral specimens, metals, etc. Funds are requested to purchase a complete laser ablation sample delivery system, consisting of a 213 nm laser with beam delivery optics, automated stage, ablation cell, video imaging and data reduction software. This sample introduction system will be coupled to the existing Thermo Scientific iCAP Q ICP-MS located in Dalhousie’s Health and Environments Research Centre [HERC] Laboratory. This combined sample introduction and analysis system will thereby provide the regional research community with a new analytical capability, enabling advances in a wide range of areas in which trace element microanalysis is required.

现在，成功开发了电感耦合等离子体质谱仪（ICP-MS），因此可以在非常低的浓度水平下对大量元素进行快速，精确的丰度和同位素分析。这项技术结合了通过激光消融（LA）微样品固体材料的能力，可产生一种仪器（LA-ICP-MS），能够测量具有高度灵敏度和空间分辨率的样品中元素丰度的能力。这是LA-ICP-MS构成当前可用的最强大的微型分析技术。 LA-ICP-MS的另一个属性是执行时间分辨分析的能力，其中在融入样品中监测元素丰度。该技术提供了有关样品的均匀性，离散阶段的亚微米尺度包含物的基本信息，可用于量化产生短暂信号的材料中的元素丰度，例如流体或熔体夹杂物或纳米颗粒。在大多数情况下，需要最少的样品制备。可以通过这种方法来衡量广泛的固体，包括透明眼镜，电池原料，半导体，骨头，头发，矿物标本，金属等。要求资金购买完整的激光消融样品样品输送系统，由213 nm激光器组成，由213 nm激光器组成，带有光束交付的舞台，自动化舞台，自动化级，Ablosated cell，Ablatiation Cell，Ablatiation Cell，Ablatiation Cell，视频，视频图像和数据还差。该样本介绍系统将与位于Dalhousie健康与环境研究中心[HERC]实验室的现有Thermo Scientific ICAP Q ICP-MS耦合。这种组合的样本介绍和分析系统将为区域研究社区提供新的分析能力，从而在需要痕量元素微分析的广泛领域取得进步。