X-ray fluorescence spectrometer

所要求的波长色散X射线荧光光谱仪(XRF)代表了对固体和液体材料进行无损定性和定量元素分析的标准技术。土壤和其他岩土材料中的元素浓度是任何研究的基础，因为它提供了对养分储量和土壤风化状态的估计，支持了通过X射线衍射鉴定矿物，并允许对岩石和矿石进行表征，并在应用地球科学中设计新的技术材料。申请的仪器将由农业和营养科学研究所以及马丁路德大学哈勒-威滕贝格地质科学和地理研究所(土壤科学、矿物学和地球化学、岩石学和应用地质学)的几个研究小组联合使用。XRF仪器将取代矿物学和地球化学工作组中的旧XRF仪器，并为该学院的跨机构研究基础设施做出贡献；联合管理战略将使该仪器得到有效利用，并促进研究合作。XRF设备不仅用于学术研究，还将用于学生的教育。鉴于待分析材料的性质差异很大，我们需要一台多功能波长色散X射线荧光分析仪，能够分析固体和液体样品中含有Z≥4(铍)的元素，从而配备一系列样品制备附件，即制备压制均匀颗粒的电动液压机和制备熔融珠的设备，以及岩土材料定量分析的标准。波长色散XRF仪器将补充现有的基本设备，使我们有必要的能力，精确和无损地测定岩土材料中的大宗元素浓度。

The requested wavelength-dispersive X-ray fluorescence spectrometer (XRF) represents the standard technique for non-destructive qualitative and quantitative element analysis of solid and liquid materials. Element concentrations in soils and other geomaterials are fundamental to any research, since providing estimates of nutrient stocks and the weathering state of soils, supporting the identification of minerals by X-ray diffraction, and allowing for characterization of rocks and ores, and designing new technical materials in applied geosciences. The requested instrument will be jointly used by several research groups of the Institute of Agricultural and Nutritional Sciences and of the Institute of Geosciences and Geography at the Martin Luther University Halle-Wittenberg (soil sciences, mineralogy and geochemistry, petrology, and applied geology). The XRF instrument will replace an old XRF instrument in the mineralogy and geochemistry working group and contribute to the cross-institutional research infrastructure at the faculty; the joint management strategy will enable efficient use of the instrument and foster research collaborations. The XRF device is not only intended for academic research but will also be used in the education of students. Given the strongly differing nature of the materials to be analyzed, we request a versatile wavelength-dispersive XRF instrument capable to analyze elements with Z ≥ 4 (beryllium) in solid and liquid samples, thus equipped with a range of accessories for sample preparation, i.e., an electrohydraulic press to prepare pressed homogeneous pellets and equipment for preparation of fusion beads, as well as standards for the quantitative analysis of geomaterials. The wavelength-dispersive XRF instrument will complement the existing basic equipment and give us the necessary capability of precise and non-destructive determination of bulk element concentrations in geomaterials.