An Interdisciplinary Project-Based Laboratory Curriculum in Chemistry Based on Ion Chromatography

化学（12）本项目为大一化学和两门分析化学课程开发一个跨学科、多周、以项目为基础、合作学习的实验项目。该项目结合了生物学、环境科学和化学的学科，研究植物修复或利用超蓄积物，即能够积累金属离子以降低土壤中金属水平的植物。发表在《科学》、《J. Environ》等期刊上的调查概述。张志强，张志强。地球化学。空洞。都被改编用于这个项目。其目标是引导学生从简单的记忆科学概念转向以跨学科工作为重点的有指导的科学探究。学生(a)学习实验技术，(b)学习理解他们选择调查的问题所需的概念，(c)选择要调查的“问题”，(d)设计实验方法，(e)进行数据收集，(f)分析结果，(g)以研讨会的形式将他们的发现与同龄人交流。通过解决他们感兴趣的开放性问题和跨学科性质的问题，学生们学会了批判性思考，成为更好的问题解决者，学习过程变得更加令人兴奋和相关。早期接触跨学科问题解决鼓励学生热情地留在科学和有成功的本科研究经验。虽然研究表明，基于项目的合作学习可以提高来自不同学术背景的各种能力水平的学生的成绩，但这种类型的学习被证明对女性、少数民族或残疾学生特别有益。本项目课程开发的主要工具是双通道离子色谱系统，该系统适用于电化学检测阴离子和I族和11族阳离子，或吸收检测过渡金属阳离子和有机化合物。

Chemistry (12)This project is developing an interdisciplinary, multi-week, project-based, cooperative-learning laboratory program in freshman chemistry and in two analytical chemistry courses. This project combines the disciplines of biology, environmental science and chemistry in investigating the area of phytoremediation or the use of hyperaccumulators, plants capable of accumulating metal ions to reduce levels of metal in soils. Investigations outlined in journals such as Science, J. Environ. Qual., and J. Geochem. Explor. are being adapted for use in this project. An objective is to guide the students away from simply memorizing scientific concepts and toward guided scientific inquiry with an emphasis on interdisciplinary work. Students (a) learn experimental techniques, (b) learn concepts required to understand the problem they choose to investigate, (c) select the "problem" to investigate, (d) design the experimental methods, (e) conduct the data collection, (f) analyze the results and (g) communicate their findings to their peers in a seminar format. By working to solve open-ended problems that are of interest to them and are interdisciplinary in nature, students learn to think critically and become better problem solvers, and the learning process becomes more exciting and relevant. Early exposure to interdisciplinary problem solving encourages students to enthusiastically remain in science and to have successful undergraduate research experiences. While studies have shown that project-based, cooperative learning increases achievement for students of all ability levels from diverse academic backgrounds, this type of learning is shown to be particularly beneficial to female, minority, or handicapped students. The major instrument that is essential for the development of this project-based curriculum is a dual-channel ion chromatography system suitable for determining anions and Group I and 11 cations with electrochemical detection, or transition metal cations and organic compounds with absorption detection.