X-Ray Fluorescence Spectrometry :Inter-and Intra-Applications as Applied to the Geosciences and Social Sciences

地理与地质学系采用了多色散x射线荧光光谱仪（MDXRF）来教授实验室课程。将这种光谱仪应用于地球科学和社会科学课程，提高了质量控制分析（Price and Ellis, 1996）。地球化学技术在地球科学本科课程中的应用，为学生提供了探索地球物理过程与地理学、人类学、考古学等重要人文要素之间关系的机会。这些地球化学技术被设计并应用于学生自己感兴趣的学术领域的调查性问题解决练习，如文化传播、文化整合和文化生态学。MDXRF还用于加强地质学专业的实验室教学，并为需要地球化学数据的学生研究提供更多机会。我们使用地球化学仪器来实现这些学习技术，以引入基于探究式的问题解决经验。学生能够了解地球物理过程对人类发展的影响，以及在理解地球与人类的物理关系中进行科学调查的必要性。MDX 1000使用能量色散（ED）和波长色散（WD）技术，结合经典的WD和ED技术，可以对各种样品介质进行低成本分析，包括液体，玻璃，颗粒，金属，纸张和粉末。学生准备样品并进行XRF分析矿石成分、精炼和金属提取技术；基岩和土壤类型；进行地球化学、岩石学和土壤科学的研究。

The Department of Geography and Geology has adapted a multi-dispersive x-ray fluorescence (MDXRF) spectrometer to teach laboratory-based courses. Adapting this spectrometer to courses in geosciences and social sciences has increased quality control analysis (Price and Ellis, 1996). The application of geochemical techniques in modifying undergraduate earth science curriculum has provided students with the opportunity to explore relationships between physical earth processes and important human elements of geography, anthropology and archeology. These geochemical techniques are designed and applied to investigatory problem-solving exercises in the students' own academic fields of interest in such areas as cultural diffusion, cultural integration, and cultural ecology. The MDXRF also is used to enhance laboratory instruction for geology majors and enhances opportunities for student research requiring geochemical data. We have implemented these learning techniques using geochemical instrumentation to introduce inquiry-based problem solving experiences. The students are able to develop an understanding about the affect of physical earth processes on human development and the necessity of scientific investigation in understanding physical earth-human relationships.The MDX 1000 uses both energy dispersive (ED) and wavelength dispersive (WD) techniques combining classical WD and ED techniques with low-cost analyses that can be conducted on a variety of sample mediums, including liquids, glasses, granules, metals, papers and powders. Students prepare samples and conduct XRF analyses of ore composition, refinement and metal extraction techniques; of bedrock and soil types; and conduct research in geochemistry, petrology, and soil science.