In situ and real-time measurement of platinum group metal concentrations by laser-induced breakdown spectroscopy**

通过激光诱导击穿光谱原位实时测量铂族金属浓度**

• 批准号: 521608-2018
• 负责人: Vidal, François
• 金额: $ 12.38万
• 依托单位: Institut national de la recherche scientifique
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=667777
• 关键词: situ; real; time; measurement; platinum

Canada is one of the main global producers of Platinum Group Elements (PGEs, including platinum, palladium, rhodium, iridium, osmium, and ruthenium). These precious metals are in high demand due to their exceptional physical and chemical properties. Currently, the measurement of platinum and palladium (two of the main PGEs) content in the ore from the mining site by lead fire assay needs at best 1 to 2 days. However, many operational decisions, especially in the exploitation stages, should be taken by engineers and geologists ideally in real time. At this time, there is nowhere in the world a technology for characterizing the content of these precious metal in the ore in real time and in the field conditions of the mining environment or of the production line. The proposed project aims to establish the bases for developing a new portable and compact technology for measuring, in situ and in real time, average concentrations of the PGEs in rocks down to a fraction of a part per million. The proposed system is based on the Laser-Induced Breakdown Spectroscopy (LIBS) technique. In short, this technique relies on the use of a laser to ablate the surface of the material to be analyzed; the intensity of the measured spectral emission of the plasma generated is then compared with a calibration curve that provides the concentration of the element of interest. Our team already has considerable experience in the development and use of innovative approaches for LIBS. This multidisciplinary project (lasers, plasma spectroscopy, geology, mining engineering) involves four researchers from the academic (INRS and Laval University) and government (NRC) sectors, as well as two major companies operating PGEs in Canada: Glencore, through XPS Expert Process Solutions, and North American Palladium.********

加拿大是全球铂族元素（PGE，包括铂、钯、铑、铱、锇和钌）的主要生产国之一。这些贵金属由于其特殊的物理和化学性质而需求量很大。目前，通过铅火试金法测量矿区矿石中的铂和钯（两种主要铂族元素）含量最多需要1至2天。然而，许多操作决策，特别是在开采阶段，应该由工程师和地质学家在理想的真实的时间。此时，世界上没有任何地方存在用于在真实的时间和采矿环境或生产线的现场条件下表征矿石中这些贵金属的含量的技术。拟议的项目旨在为开发一种新的便携式紧凑技术奠定基础，该技术用于现场和真实的时间测量岩石中铂族元素的平均浓度，浓度低至百万分之一。该系统是基于激光诱导击穿光谱（LIBS）技术。简而言之，该技术依赖于使用激光来烧蚀待分析材料的表面;然后将所产生的等离子体的测量光谱发射的强度与提供感兴趣元素的浓度的校准曲线进行比较。我们的团队在LIBS创新方法的开发和使用方面已经拥有丰富的经验。该多学科项目（激光、等离子体光谱、地质学、采矿工程）涉及来自学术（INRS和拉瓦尔大学）和政府（NRC）部门的四名研究人员，以及在加拿大运营PGE的两家主要公司：Glencore（通过XPS Expert Process Solutions）和North American Palladium。