ICP-Tandem-Mass Spectrometer with Reaction Cell (ICP-MS/MS)

带反应池的 ICP 串联质谱仪 (ICP-MS/MS)

• 批准号: 438260277
• 金额: --
• 依托单位: Christian-Albrechts-Universität zu Kiel
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/438260277?language=en
• 关键词: ICP; Tandem; Mass; Spectrometer; Reaction

Being one of the first installations in Europe in 1988 the ICP-MS Lab of the Marine Climate Research Group at Kiel Marine Science, Kiel University, invented numerous new methods for the multielement analysis down to ultra-trace levels. A focus is on direct solids micro-analysis by laser ablation. The lab has strong expertise in a wide field of applications through long-standing and interdisciplinary cooperation which is documented in a large number of international peer reviewed publications. Our current scientific problems both in marine (paleo-) climate research and (marine) geochemistry require the accurate analysis of very small samples needing ultra-trace detection power. The newly developed technology of "ICP tandem mass spectrometry with reaction cell (ICP-MS/MS)" offers innovative strategies to resolve the many problems with mass spectral and isobaric interferences as known from conventional ICP-MS. Now, geological ages can be determined using beta-decay series e.g., Rb-Sr, K-Ca. Mutual interferences of Mg, Sr, and Ca during in situ analysis of bio-carbonates (corals, microfossils, shells etc.), and many other interferences during rock and seawater analysis for our projects will be circumvented by gas phase reactions and mass shift or on-mass analysis, respectively. Extreme detection power and ultra-fast data acquisition will be used for the analysis of nanoparticles in hydrothermal fluids and natural water. The extreme abundance sensitivity of a tandem mass spectrometer allows for the accurate analysis of B-11 besides high C-12 signal, of Th-230 adjacent to high Th-232, of U-234 in presence of high U-235. The new ICP-MS/MS instrument is urgently requested as a replacement for our 19 years-old work-horse ICP-QMS that is now out of service for many years and without supply of spare parts.

1988年，基尔大学基尔海洋科学海洋气候研究小组的ICP-MS实验室是欧洲最早的装置之一，它发明了许多新方法，用于多元素分析，直到超痕量水平。重点是激光烧蚀直接固体显微分析。该实验室通过长期的跨学科合作在广泛的应用领域拥有强大的专业知识，这在大量的国际同行评审出版物中有记载。我们目前的科学问题，无论是在海洋（古）气候研究和（海洋）地球化学需要非常小的样品，需要超痕量检测能力的准确分析。新开发的“带反应池的ICP串联质谱（ICP-MS/MS）”技术为解决传统ICP-MS中质谱和同量异位素干扰的许多问题提供了创新策略。现在，可以使用β衰变系列确定地质年龄，例如，Rb-Sr、K-Ca。生物碳酸盐（珊瑚、微体化石、贝壳等）原位分析中Mg、Sr、Ca的相互干扰，在我们的项目中，岩石和海水分析过程中的许多其他干扰将分别通过气相反应和质量转移或非质量分析来规避。极高的探测能力和超快的数据采集将用于热液流体和天然水中纳米颗粒的分析。串联质谱仪的极高丰度灵敏度允许精确分析除高C-12信号外的B-11、与高Th-232相邻的Th-230、存在高U-235时的U-234。新的ICP-MS/MS仪器迫切需要作为我们19年的工作马ICP-QMS的替代品，该仪器现已停止使用多年，并且没有备件供应。