Development of a simple method for the direct determination of rare earth elements in refractory materials

建立直接测定耐火材料中稀土元素的简便方法

• 批准号: 568536-2021
• 负责人: Beauchemin, DianeD
• 金额: $ 2.19万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=747299
• 关键词: Development; simple; method; direct; determination

The multi-elemental analysis of solids typically requires their dissolution, which is time-consuming and very difficult, if not virtually impossible in several cases. During this project, a new method will be developed for the direct analysis of solids that are notoriously difficult to dissolve. The sample will be inserted into a small furnace whose temperature will be changed in steps in order to selectively vaporize the elements of interest into the detection system. To facilitate vaporization of the elements of interest, gases that can react with the solid within the furnace will be introduced into the furnace. The operating conditions will be optimized to yield a versatile method that is applicable to the accurate analysis of a variety of solids. This method will allow industries such as Kingston Process Metallurgy Inc. (KPM) to analyze difficult samples in house, instead of having to send them to service laboratories, allowing much shorter turnaround time and with full control on the analysis quality control and quality assurance (QC/QA). The method will be developed in 4 steps. At the completion of the first step, KPM will have a basic method for the direct analysis of solids, requiring the use of solid reference materials for calibration. At the end of the second step, the direct analysis of solids will be possible using standard solutions for calibration, which are readily available and much cheaper than solid reference materials. After the third step, the method will allow the measurement of lower levels of elements in solid samples. At the end of the project, a versatile method for the reproducible and accurate direct analysis of solid samples will result. After each step, publication of the method, including a demonstration of its accuracy, will be done in a peer-reviewed journal so that others in Canada and elsewhere who also experience difficulty with the analysis of hard-to-dissolve solids may replicate it. Because the method will be applicable to soils, coal, etc., it should be invaluable to government laboratories monitoring elements in the environment, to geochemical prospectors looking for new under-cover ore deposits to mine, and to Canadian industries (such as the ceramics industry) that want to quickly assess the purity of their solid products.

对固体的多元分析通常需要它们的溶解，这很耗时，而且非常困难，即使不是在某些情况下几乎不可能。在此项目期间，将开发一种新方法，以直接分析难以溶解的固体。样品将被插入一个小炉中，该炉子将以步骤更改，以选择性地将感兴趣的元素蒸发到检测系统中。 为了促进感兴趣元素的蒸发，可以将可以与炉中固体反应的气体引入炉子中。 将对操作条件进行优化，以产生一种多功能方法，该方法适用于对各种固体的准确分析。 这种方法将允许金斯敦流程冶金公司（毕马威）等行业分析内部困难的样本，而不必将它们发送到服务实验室，从而使周转时间更短，并且可以完全控制分析质量控制和质量保证（QC/QA）。该方法将以4个步骤开发。 在第一步完成时，KPM将有一种直接分析固体的基本方法，需要使用固体参考材料进行校准。 在第二步结束时，使用标准解决方案进行校准，可以直接分析固体，这比固体参考材料容易获得，并且便宜得多。 在第三步之后，该方法将允许测量固体样品中较低水平的元素。在项目结束时，将产生一种可重现和准确直接分析实心样品的多功能方法。 每一步之后，该方法的出版物（包括其准确性的演示）将在同行评审的期刊中进行，以便加拿大和其他地方的其他人在难以分析难以散布固体的分析中遇到困难。由于该方法将适用于土壤，煤炭等，因此，它应该是政府实验室监测环境中的要素，地球化学探矿者，寻求寻找新的矿床的矿床，以及加拿大工业（例如陶瓷行业）想要快速评估其固体产品的纯度。