A sequential sample digestion platform for understanding radiological, environmental, industrial, and geochemical processes

用于了解放射学、环境、工业和地球化学过程的连续样品消解平台

• 批准号: RTI-2023-00203
• 负责人: Lariviere, Dominic
• 金额: $ 9.54万
• 依托单位: Université Laval
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 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=748689
• 关键词: sequential; sample; digestion; platform; understanding

The objective of this grant application is to provide researchers and users of the Characterization of Emerging Inorganic Pollutants/Indicators platform (CEIPIP), with a tool to enable to digest all samples types in a reproductible, complete, and coherent manner for inorganic analysis. The CEIPIP has already an extensive characterization platform with 2 ICP-MS/MS and 2 ICP-OES, but the sample preparation equipment that was purchased at its inception are now either impossible to repair (as parts are not supported by the vendors) or significantly damaged (which results in a high downtime). With over 50 different highly qualified personnel (HQP) currently using this instrumentation to support their active research, the sample preparation is the Achilles heel of the CEIPIP and has severely restricted our ability to analyze samples for their elemental compositions, especially for refractory elements or complex matrices (nuclear and e-wastes, peculiar sulfur deposit). In addition, as we are interested in the speciation and quantification of ultratraces, enrichment via chromatography or extraction is customary to digest samples. Thus, there is an URGENT need to provide the HQP of the CEIPIP with a robust sample digestion platform that is suited to the nature of the projects they are actively pursuing. For this reason, we are requesting three pieces of equipment (Focused Infrared Digester[FID], Microwave Digestion unit[MWD], and closed-vessel evaporator[CVE]) that can be coupled sequentially to provide a much-needed sample preparation capacity. Two of the requested equipment (FID and MWD) were part of the equipment previously available to CEIPIP users, but the obsolete and worn-out state of the decade-old equipment is jeopardizing our ability to perform state-of-the-art research related to inorganic constituents. Absence of such instrumentation strongly hinders the progression of our HQP and limited their capacity to generate data required to complete their research. Obviously, this platform will also be made available to all others graduate students and postdocs of the Science and Engineering faculty (over 300 researchers) as it has already been the case with the CEIPIP equipment. As many of our projects involves time and environment-sensitive species and nuclear materials, there is no possible alternative as the transportation and analysis of such substances is strongly limited in Canada, thus hindering our capacity to rely on external resources for the preparation of samples. Having this instrument is also very important for the training of HQP and for their future careers in analytical chemistry, nuclear and environmental sciences, earth sciences.

该赠款应用程序的目的是为研究人员和用户提供新兴无机污染物/指标平台（CEIPIP）的表征，并具有一种工具，以便以可生殖，完整且连贯的方式消化所有样本类型，以进行无机分析。 CEIPIP已经拥有一个具有2个ICP/MS和2个ICP-OES的广泛特征平台，但是现在无法修复的样品准备设备（因为零件不受供应商的支持），或受到重大损坏（导致高停机时间）。当前使用该仪器支持其主动研究的50多名高素质高素质（HQP），样本制备是Ceipip的致命弱点，并且严格限制了我们分析样品的元素组成的能力，尤其是对于耐火元素或复杂的矩阵（核和电子污垢，Peculiar sulfur suppe）。另外，由于我们对超插图的物种形成和定量感兴趣，因此习惯于消化样品的富集或提取。 因此，迫切需要为CEIPIP的HQP提供适合他们积极追求的项目的性质的强大样本消化平台。因此，我们要求三件设备（聚焦红外消化酯[FID]，微波消化单元[MWD]和封闭的老板蒸发器[CVE]）可以顺序耦合，以提供急需的样品制备能力。请求的两个设备（FID和MWD）是CEIPIP用户以前可用的设备的一部分，但是十年历史的设备的过时且破旧的状态正在危害我们执行与无机成分有关的最先进研究的能力。缺乏这种仪器极大地阻碍了我们的HQP的发展，并限制了他们生成完成研究所需数据的能力。显然，该平台还将提供给所有其他研究生和科学和工程学院（300多名研究人员）的博士后，因为CEIPIP设备已经如此。由于我们的许多项目都涉及时间和环境敏感的物种和核材料，因此没有可能的选择，因为加拿大对此类物质的运输和分析受到了极大的限制，因此阻碍了我们依靠外部资源来准备样品的能力。拥有该工具对于HQP的培训及其在分析化学，核和环境科学，地球科学方面的未来职业也非常重要。