The Introduction of Atomic Absorption Spectroscopy into the General Chemistry Lab

原子吸收光谱法引入普通化学实验室

• 批准号: 9850953
• 负责人: Graham Peaslee
• 金额: $ 2.09万
• 依托单位: Hope College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-05-01 至 2000-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9850953&HistoricalAwards=false
• 关键词: Introduction; Atomic; Absorption; Spectroscopy; into

The goal of this project is to link several general chemistry lab experiments to a central theme: the weekly monitoring of aqueous metal ion concentrations in local surface waters. The current general chemistry lecture already introduces several popular topics early in the students' education to help capture their attention and demonstrate the relevance of learning the introductory material. This proposal would extend this concept to the laboratory, where environmental monitoring of chemical concentrations of metals will capture the students' attention. One of the most sensitive ways to measure these metal concentrations is via Atomic Absorption (AA) spectroscopy. Four AA spectrometers will be added to the general chemistry laboratory, and each general chemistry student will individually make several measurements of metal ion concentrations from local sites during their first year of general chemistry. These data would be used by the students for individual lab reports during the year, and they would also be posted on a weekly basis to a public-access fileserver. This constantly expanding database of student results will be available for a final "culminating experience" laboratory report at the end of the first year of chemistry, when each student will be asked to analyze the data and to look for patterns that relate the results to local weather, topography or land use. These weekly measurements will also be available to all upper-class students via fileserver, and to other institutions via the WWW. The addition of a sophisticated chemical analysis with obvious ties to local environmental problems will heighten student appreciation and interest in all aspects of the laboratory course, and strengthen ties to the lecture component of general chemistry. Also the data analysis skills acquired at the general chemistry level will allow the students to attempt more sophisticated analyses in their upper-class courses.

这个项目的目标是将几个普通化学实验室实验与一个中心主题联系起来：每周监测当地地表沃茨中的水金属离子浓度。目前的普通化学讲座已经在学生的教育早期介绍了几个热门话题，以帮助吸引他们的注意力，并展示学习入门材料的相关性。这项建议将把这一概念扩展到实验室，在那里，对金属化学浓度的环境监测将吸引学生的注意力。测量这些金属浓度的最灵敏的方法之一是通过原子吸收（AA）光谱。四个AA光谱仪将被添加到普通化学实验室，每个普通化学学生将在普通化学的第一年单独进行几次金属离子浓度的测量。这些数据将被学生用于一年中的个人实验报告，并且他们也将每周发布到公共访问文件服务器。这个不断扩大的学生结果数据库将在化学第一年结束时提供最终的“终极体验”实验室报告，届时每个学生将被要求分析数据并寻找与当地天气，地形或土地使用相关的结果模式。这些每周测量也将提供给所有高年级学生通过文件服务器，并通过万维网向其他机构。添加与当地环境问题有明显联系的复杂化学分析将提高学生对实验室课程各个方面的欣赏和兴趣，并加强与普通化学讲座部分的联系。此外，在普通化学水平获得的数据分析技能将允许学生在他们的上层课程中尝试更复杂的分析。