MRI: ACQUISITION OF A WAVELENGTH DISPERSIVE X-RAY FLUORESCENCE SPECTROMETER FOR TEACHING AND RESEARCH AT FRESNO STATE

MRI：购买波长色散 X 射线荧光光谱仪用于弗雷斯诺州立大学的教学和研究

• 批准号: 1920357
• 负责人: Keith Putirka
• 金额: $ 35.21万
• 依托单位: California State University-Fresno Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-08-01 至 2021-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1920357&HistoricalAwards=false
• 关键词: MRI; ACQUISITION; WAVELENGTH; DISPERSIVE; RAY

This award will permit the purchase of a new Wavelength Dispersive X-ray Fluorescence Spectrometer to replace an aging instrument purchased in 2002. The new instrument will open up many new research avenues. The new analytical instrument will be an important tool in educating the next generation of scientists. These analytical instruments allow students to participate as partners in research. By having such equipment available, students can ask questions and form and test their own hypotheses, and perhaps most importantly, revise their hypotheses as they collect new data. The researchers and students will use the instrument to address questions such as the sources of heavy metal contaminants in groundwaters of the San Joaquin Valley of central California, an area where access to clean drinking water can be problematic for many residents.This award will fund a new X-ray fluorescence spectrometer to provide essential support for the following: (a) Studies of ancient and active volcanoes that provide tests of how and why volcanoes erupt; (b) Examination of metamorphic rocks of the California Coast Ranges, to determine how subductions zones (the collision of two tectonic plates) affect the kinds of rocks that are produced at Earth's surface; and (c) An interdisciplinary collaboration to study how soils interact with groundwater to affect the quality of drinking water in California's Central Valley. Many small towns in the "Valley" rely on groundwater for drinking, but many such communities have groundwater that is contaminated by uranium, arsenic, chromium and other heavy metals. This collaborative study will combine expertise in microbiology, mineralogy and groundwater chemistry to identify how such contaminants enter groundwater, which will lead to viable mitigation efforts.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该奖项将允许购买一台新的波长色散 X 射线荧光光谱仪，以取代 2002 年购买的老化仪器。新仪器将开辟许多新的研究途径。 新的分析仪器将成为教育下一代科学家的重要工具。这些分析仪器使学生能够作为合作伙伴参与研究。通过拥有此类设备，学生可以提出问题，形成并测试自己的假设，也许最重要的是，在收集新数据时修改他们的假设。 研究人员和学生将使用该仪器来解决诸如加利福尼亚州中部圣华金河谷地下水中重金属污染物来源等问题，该地区的许多居民获得清洁饮用水可能存在问题。该奖项将资助一台新的 X 射线荧光光谱仪，为以下方面提供必要支持： (a) 对古代活火山的研究，提供火山喷发方式和原因的测试； (b) 检查加利福尼亚海岸山脉的变质岩，以确定俯冲带（两个构造板块的碰撞）如何影响地球表面产生的岩石种类； (c) 跨学科合作，研究土壤如何与地下水相互作用，从而影响加州中央山谷的饮用水质量。 “山谷”中的许多小城镇依赖地下水饮用，但许多此类社区的地下水受到铀、砷、铬等重金属的污染。这项合作研究将结合微生物学、矿物学和地下水化学方面的专业知识，以确定这些污染物如何进入地下水，从而采取可行的缓解措施。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。