Acquisition of an Automated Atomic Absorption Spectrometer System for Enhancement of Undergraduate Education in Environmental Geology and Geochemistry

我们购买了一套现代化的计算机自动原子吸收光谱测定系统。该项目旨在提高准备进入环境地质学和地球化学领域的本科生的教育和研究能力，通过在水分析方面布置复杂的“动手”作业。该项目强调采用综合方法，包括项目概念、抽样策略规划、抽样实施、水分析、数据减少和呈现、报告撰写以及有关科学数据使用和滥用的伦理考虑。拟议的项目是1993年春季成功完成的一个原型项目的升级，该项目涉及测定校园饮水机中的铅。一小部分环境地质学专业的学生根据环境保护局20 ppb的行动水平评估了饮用水中的铅浓度。学生们使用的是老式的、手动的、相对不准确的石墨炉原子吸收光谱仪。新提出的自动化仪器使所有环境地质专业的学生都能以优异的成绩完成这一任务和类似的任务，从而培养出一批受过更好教育、准备更好的毕业生，他们将走向环境地质和地球化学的职业生涯。

9452375 Rose A modern, computer automated system for atomic absorption spectrometry has been purchased. The project is to enhance the education and research capabilities of undergraduate students who are preparing to enter the fields of environmental geology and geochemistry by giving sophisticated "hands-on" assignments in water analyses. The project emphasizes an integrated approach that includes project conception, planning of the sampling strategy, carrying out the sampling, carrying out the water analyses, data reduction and presentation, report writing, and ethical considerations regarding the use and abuse of scientific data. The proposed project represents an upgrading of a prototype project completed successfully in Spring, 1993, which involved determinations of Pb in campus drinking fountains. A small subset of students in Environmental Geology assessed the Pb concentrations of drinking water in light of the EPA action level of 2O ppb Pb. The students used an old, manual, and relatively inaccurate graphite furnace atomic absorption spectrometer. The proposed new automated instrument enables this and similar assignments to be carried out with superior results by all of the Environmental Geology students, resulting in a better educated and better prepared graduating class of scientists headed for professional careers in environmental geology and geochemistry.