Ion Chromatography: Water Analysis in the Undergraduate Chemistry Laboratory Curriculum

离子色谱：本科化学实验室课程中的水分析

• 批准号: 9850906
• 负责人: Kumar Sinniah
• 金额: $ 2.26万
• 依托单位: Calvin University
• 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: 1998-09-01 至 2000-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9850906&HistoricalAwards=false
• 关键词: Ion; Chromatography; Water; Analysis; Undergraduate

An ion chromatography system is being used to introduce experimental modules involving water quality measurements into the laboratory component of first-year General Chemistry, Fundamentals of Chemistry, Quantitative Analysis, and Environmental Chemistry. These applications are relevant to our undergraduate students since they involve direct measurements of how human activities affect the natural environment. First-year students are being introduced to a laboratory module whose theme is the analysis of natural surface water systems and they are using this module to develop analytical skills in the laboratory. Upper-class students are gaining knowledge of and experience with an important new analytical instrument which is widely used in industry, research, and government laboratories. Students also are being tested on their ability to apply basic chemical principles to complex systems, and their ability to process and interpret data. Use of the ion chromatography system, fully capable of analyzing cations and anions in a variety of water samples, is enhancing the student laboratory experience since it supersedes wet chemical methods which are both labor intensive and time consuming. The impact that these modules have on our laboratory curriculum is being assessed by comparing the students' motivation and learning in such experiments with the learning which results from more traditional experiments.

离子色谱系统被用来将涉及水质测量的实验模块引入一年级的普通化学、化学基础、定量分析和环境化学的实验室组成部分。这些应用程序与我们的本科生相关，因为它们涉及人类活动如何影响自然环境的直接测量。一年级学生被介绍到一个以分析天然地表水系统为主题的实验室单元，他们正在使用这个单元来发展实验室的分析技能。高年级学生正在获得一种重要的新分析仪器的知识和经验，这种仪器广泛应用于工业、研究和政府实验室。学生们还将接受测试，测试他们将基本化学原理应用于复杂系统的能力，以及处理和解释数据的能力。离子色谱系统完全能够分析各种水样中的阳离子和阴离子，它的使用改善了学生的实验室体验，因为它取代了劳动密集型和耗时的湿化学方法。这些单元对我们实验室课程的影响是通过比较学生在这类实验中的动机和学习与从更传统的实验中获得的学习来评估的。