Acquisition of an X-Ray Fluorescence Spectrometer for Geological and Environmental Analysis

最先进的X射线荧光光谱仪将为俄亥俄州州立大学的各种地球和环境科学研究项目提供新的元素化学分析能力。 该仪器还将被本科生和研究生用作课程的一部分，并与教师一起进行研究项目。 下文介绍了将使用新仪器的一些选定研究项目。 教授W.贝里里昂和安妮凯里和他们的学生将调查地球化学输入到世界海洋的主要来源，从河流中的悬浮物质，可能有助于大部分的沉积物进入海洋。 为了了解海洋化学，必须确定自然和人为来源的化学物种的主要来源。 大卫埃利奥特教授的研究小组将收集和分析一个火成岩，以更好地了解构造过程和岩浆运输与最初的冈瓦纳分裂。 这项研究将有助于了解地球历史的变化，特别是大陆的分裂和运动。 Samuel Traina教授的小组将研究无机化学污染物吸附到土壤和沉积物上的性质。了解这些过程是重要的，因为污染物，包括放射性废物，吸附到土壤和沉积物可以控制其运输和对生物体的影响。 俄亥俄州著名学者Frank Schwartz教授和他的学生将研究表层土壤的不均匀性如何影响反应前沿的传播。 这些信息将用于更好地了解污染场地补救的潜在过程。 Prabir Dutta教授的团队将进行测量，以支持他们开发高温环境中有毒气体的传感器阵列，如汽车发动机。 朗尼·汤普森教授和他的研究小组将分析他们从世界各地收集的冰芯中的灰尘。 为了评估当前或未来的全球气候变化，必须了解过去的历史和造成气候变化的因素。汤普森及其同事收集的极地冰盖和高海拔热带冰盖的冰芯包含了数千年来气候和环境变化的高分辨率记录。 从这项研究中获得的信息将有助于评估全球气候的历史变化。

EAR-0135318LyonsA state-of-the-art X-ray Fluorescence Spectrometer will provide new elemental chemical analysis capabilities for a variety of Earth and environmental sciences research projects at the Ohio State University. The instrument will also be used by both undergraduate and graduate students as part of courses and their research projects with faculty. Some selected research projects that will use the new instrument are described below. Profs. W. Berry Lyons and Anne Carey and their students will investigate major sources of geochemical input into the world's oceans from suspended materials in rivers that may contribute a large portion of the sediment that enters the oceans. In order to understand ocean chemistry, the main sources of chemical species from natural and anthropogenic origins must be determined. Prof. David Elliot's research group will collect and analyze a igneous rocks in order to understand better the tectonic processes and transport of magma associated with initial Gondwana break-up. This research will contribute to understanding changes in earth history, specifically the break up and movement of continents. Prof. Samuel Traina's group will investigate the nature of adsorption of inorganic chemical contaminants onto soils and sediments. Understanding these processes is important because adsorption of pollutants, including radioactive waste, to soils and sediments could control their transport and effect on living organisms. Prof. Frank Schwartz, an Ohio Eminent Scholar, and his students, will study how inhomogeneities in surface soils affect the propagation of reaction fronts. This information will be used to understand better potential processes for remediation of polluted sites. Prof. Prabir Dutta's group will make measurements to support their development of senor arrays for toxic gases in high temperature environments, such as automobile engines. Prof. Lonnie Thompson and his research group, will analyze dust from ice cores that they have collected from throughout the world. In order to assess current or future global climate change, past history and the factors that caused climate change must be understood. The ice cores from polar ice sheets and high altitude tropical ice caps, collected by Thompson and co-workers, contain high-resolution records of climatic and environmental variation that can extend over thousands of years. The information gained from this research will be useful in assessing historical changes in global climate.