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.

该拨款申请的目的是为新兴无机污染物/指标表征平台 (CEIPIP) 的研究人员和用户提供一种工具，能够以可重复、完整和连贯的方式消化所有样品类型，以进行无机分析。 CEIPIP 已经拥有一个包含 2 个 ICP-MS/MS 和 2 个 ICP-OES 的广泛表征平台，但在其成立之初购买的样品制备设备现在要么无法修复（因为供应商不支持零件），要么严重影响了其性能。损坏（导致较长的停机时间）。目前有超过 50 名不同的高素质人员 (HQP) 使用该仪器来支持他们的积极研究，样品制备是 CEIPIP 的致命弱点，严重限制了我们分析样品元素成分的能力，特别是难熔元素或复杂元素。基质（核和电子废物、特殊的硫矿床）。此外，由于我们对超痕量的形态和定量感兴趣，因此通常通过色谱或萃取进行富集来消化样品。 因此，迫切需要为 CEIPIP 的总部提供一个强大的样品消解平台，该平台适合他们正在积极开展的项目的性质。因此，我们需要三套设备（聚焦红外消解器 [FID]、微波消解装置 [MWD] 和密闭容器蒸发器 [CVE]），这些设备可以顺序连接，以提供急需的样品制备能力。所请求的两个设备（FID 和 MWD）是 CEIPIP 用户之前可用的设备的一部分，但是这台已有十年历史的设备的陈旧和磨损状态正在危及我们进行相关最先进研究的能力。为无机成分。缺乏此类仪器严重阻碍了我们总部的进展，并限制了他们生成完成研究所需数据的能力。显然，该平台也将向科学与工程学院的所有其他研究生和博士后（超过 300 名研究人员）开放，就像 CEIPIP 设备的情况一样。由于我们的许多项目涉及时间和环境敏感的物种和核材料，因此没有可能的替代方案，因为此类物质的运输和分析在加拿大受到严格限制，从而阻碍了我们依赖外部资源来制备样品的能力。拥有该仪器对于 HQP 的培训以及他们未来在分析化学、核与环境科学、地球科学方面的职业生涯也非常重要。