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Excimer-Laser-Ablation-System

准分子激光烧蚀系统

基本信息

批准号：
516128452
负责人：
金额：
--
依托单位：
Universität Münster
依托单位国家：
德国
项目类别：
Major Research Instrumentation
财政年份：
2022
资助国家：
德国
起止时间：
2021-12-31 至无数据
项目状态：
未结题

来源：
https://gepris.dfg.de/gepris/projekt/516128452?language=en
关键词：
Excimer Laser Ablation System

项目摘要

Geosciences are concerned with processes that take place at different spatial and time scales, ranging from atomic to global, and from seconds to billions of years. Petrological, geochemical and mineralogical research investigates these processes that include the formation, the composition, and global cycling of terrestrial geomaterials as well as minerals on extraterrestrial bodies. The samples are often only a few micrometers in size and thus, high spatial resolution in trace element- and isotope analysis is essential. Since the mid-nineties, laser ablation has become an established method for trace element and isotope analysis where the sample material is ablated in the micrometer range and then analysed by mass spectrometry. In the literature this method is referred to as Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS). Both workload and diversity of current and past projects are evidence for the necessity of a functioning and modern LA-ICP-MS laboratory. The currently used instrument has been operational since 2013. The instrument is ageing, electronic spare parts are becoming increasingly difficult to obtain while repairs and downtimes are on the increase. In the research supplements, the participating working groups detail the need for LA-ICP-MS analysis. The research focus will be on the analysis of experimental products, natural mineral and rock samples, and the investigation of extraterrestrial sample material.

地球科学关注的是在不同的空间和时间尺度上发生的过程，从原子到全球，从几秒钟到几十亿年。岩石学，地球化学和矿物学研究调查这些过程，包括地球地质材料的形成，成分和全球循环以及地外天体上的矿物。样品通常只有几微米大小，因此，在微量元素和同位素分析中，高空间分辨率是必不可少的。自90年代中期以来，激光烧蚀已成为一种用于微量元素和同位素分析的既定方法，其中样品材料在微米范围内烧蚀，然后通过质谱法进行分析。在文献中，该方法被称为激光烧蚀电感耦合等离子体质谱法（LA-ICP-MS）。当前和过去项目的工作量和多样性都证明了一个现代化的LA-ICP-MS实验室的必要性。目前使用的仪器自2013年以来一直在运行。该仪器正在老化，电子备件越来越难以获得，而修理和停机时间也在增加。在研究补充中，参与工作组详细说明了LA-ICP-MS分析的必要性。研究重点将是实验产品、天然矿物和岩石样品的分析，以及地球外样品材料的调查。