Acquisition of an X-Ray Fluorescence instrument for research and teaching at Wesleyan University

购买 X 射线荧光仪器用于卫斯理大学的研究和教学

• 批准号: 0949376
• 负责人: Johan Varekamp
• 金额: $ 14.97万
• 依托单位: Wesleyan University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-03-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0949376&HistoricalAwards=false
• 关键词: Acquisition; Ray; Fluorescence; instrument; research

The analytical technique of X-ray fluorescence (XRF) is well proven, and provides quantitative information on a broad range of elements, with relatively simple sample preparation and ease of use. This award will fund the acquisition of a new XRF instrument that is ideal for use in teaching and research in a mid-sized, intensely focused earth science department such as the Wesleyan University E&ES department. Wesleyan BA and MA students as well as those from neighboring universities will use the new instrument for their research. Wesleyan teachers will use the instrument to inspire students on the path of ?original discovery? and stimulate curiosity into scientific endeavors that may ultimately lead to innovations in industry, recognition of environmental hazards, or new energy resources.Science education of college students is important given the role that technology and scientific discourse play in society and the need to compete in the global economy. The use of ?active learning projects? greatly facilitates the teaching of science. Students collect new data from their samples, and interpret these to test a hypothesis, show a spatial anomaly, or derive a new hypothesis on the origin of the samples. The chemical composition of rocks and minerals provides direct evidence on their origin and evolution. Therefore, petrology is a prime tool in deciphering earth history as well as helping to locate new energy resources or ore bodies. Sedimentary rocks may reveal evidence of the climate at the time when they were deposited, whereas volcanic rocks yield clues to the deeper, inaccessible parts of the earth, such as the mantle. The chemical composition of soils and sediment may give clues to anthropogenic or natural pollution with toxic elements, including Lead, Copper and Arsenic. Acquisition of a new X-ray fluorescence spectrometer at Wesleyan University enables us to reach these goals.

X射线荧光(XRF)分析技术得到了很好的验证，提供了关于多种元素的定量信息，样品制备相对简单，易于使用。这笔资金将用于购买一台新的XRF仪器，该仪器非常适合于中等规模、高度专注的地球科学系的教学和研究，如卫斯理大学E&Amp；ES系。卫斯理大学的学士和硕士学生以及来自邻近大学的学生将使用这种新工具进行研究。卫斯理教师将使用该仪器启发学生走上？原创发现？的道路。并激发对科学工作的好奇心，最终可能导致工业创新、环境危害认识或新能源。鉴于技术和科学话语在社会中发挥的作用以及在全球经济中竞争的需要，大学生的科学教育很重要。主动学习项目的使用？极大地促进了科学的教学。学生从他们的样本中收集新的数据，并对这些数据进行解释，以检验假设，显示空间异常，或推导出关于样本来源的新假设。岩石和矿物的化学成分为它们的起源和演化提供了直接证据。因此，岩石学是破译地球历史以及帮助寻找新能源或矿体的主要工具。沉积岩可能揭示了它们沉积时的气候证据，而火山岩则提供了地球更深、更难接近的部分的线索，如地幔。土壤和沉积物的化学成分可能为铅、铜和砷等有毒元素的人为或自然污染提供线索。卫斯理大学购置了一台新的X射线荧光光谱仪，使我们能够实现这些目标。