XRF as a Tool for Curricular Enhancement in Earth Systems and Environmental Chemistry

XRF 作为地球系统和环境化学课程强化的工具

• 批准号: 0942447
• 负责人: Jade Star Lackey
• 金额: $ 20万
• 依托单位: Pomona College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0942447&HistoricalAwards=false
• 关键词: XRF; Tool; Curricular; Enhancement; Earth

Geoscience (42) X-ray fluorescence is a primary analytical technique providing accurate and precise analyses of major, minor, and some trace chemical constituents of many materials. This project is enhancing the teaching and research programs in Geology and Chemistry Departments at Pomona College by creating a shared use wavelength-dispersive X-ray fluorescence laboratory that enables students to perform quantitative compositional analyses on samples ranging from 1 ppm to tens of percent.Intellectual Merit: This new instrument is infusing new technology into the curricula of both departments as well as other members of the Claremont Colleges (Harvey Mudd, Scripps, Pitzer, and Claremont McKenna Colleges). In addition to gaining hands-on experience using an industry standard analytical instrument, students are engaging with a variety of applications, and thus career options, including analysis of geological samples including soils and igneous, metamorphic, sedimentary rocks, metallurgical samples such as steel and brass, archaeological samples, and environmental aerosols. Pomona?s field-based research projects is able to combine GIS and XRF data, overlaying composition with location in order to visualize changes in composition across a location to aid in directing future research projects, such as mapping contaminant plumes. Broader Impacts: The implementation of XRF enhances undergraduate STEM learning and research experiences for students from Pomona, Harvey Mudd, Scripps, Pitzer, and Claremont McKenna Colleges. A number of uses of the XRF, such as investigations of contamination in soils, air quality, and climate studies in the Los Angeles Basin and environs, enable students to apply XRF data to solve real-world problems that serve the public interest. Awareness of the value and importance of scientific training through solving civic problems is at the heart of the Science Education for New Civic Engagements and Responsibilities (SENCER) program. Some of the outcomes of this project are being used as course design models and potentially cross-fertilizing the SENCER program. Planned outreach and collaboration with other L.A. Basin schools are fostering synergistic activities in facilitating teaching and research collaboration between two XRF labs and six other geoscience departments in the L.A. Basin, thereby reaching out to help train a large number of underrepresented students in geoscience programs. The XRF also is being used by students participating in Pomona College?s Academy for Youth Success (PAYS), a summer research program for local high school students.

X射线荧光是一种主要的分析技术，可以对许多材料的主要、次要和某些痕量化学成分进行准确和精确的分析。该项目通过创建一个共享使用的波长色散X射线荧光实验室，使学生能够对从1 ppm到百分之几十的样品进行定量成分分析，从而加强了波莫纳学院地质学和化学系的教学和研究计划。这一新工具将新技术注入到两个系以及克莱蒙学院其他成员的课程中（Harvey Mudd，Scripps，Pitzer，and克莱蒙麦肯纳学院）。除了获得使用行业标准分析仪器的实践经验外，学生还参与各种应用，从而获得职业选择，包括分析地质样品，包括土壤和火成岩，变质岩，沉积岩，冶金样品，如钢和黄铜，考古样品和环境气溶胶。波莫纳？的实地研究项目能够将联合收割机GIS和XRF数据相结合，将成分与位置叠加，以便可视化整个位置的成分变化，以帮助指导未来的研究项目，例如绘制污染物羽流。更广泛的影响：XRF的实施增强了来自波莫纳，哈维穆德，斯克里普斯，皮茨和克莱蒙麦肯纳学院的学生的本科STEM学习和研究经验。XRF的许多用途，如土壤污染调查，空气质量和气候研究在洛杉矶盆地和周边地区，使学生能够应用XRF数据来解决服务于公共利益的现实世界的问题。通过解决公民问题认识科学培训的价值和重要性是新公民参与和责任科学教育（SENCER）计划的核心。该项目的一些成果被用作课程设计模型，并可能对SENCER计划产生交叉影响。计划与洛杉矶其他地方开展外联和合作。盆地学校正在促进协同活动，以促进两个XRF实验室和洛杉矶其他六个地球科学部门之间的教学和研究合作。盆地，从而伸出援助之手，以帮助培训大量的代表性不足的学生在地球科学方案。XRF也正在使用的学生参加波莫纳学院？美国青年成功学院（PAYS），一个针对当地高中生的暑期研究项目。