Enhancement of UV-Visible Spectroscopy Laboratories

普通化学，无机化学，物理化学和仪器分析的本科实验室课程可以通过增加配备有温度控制器和光谱电化学池的二极管阵列紫外可见分光光度计来改进。 由于使用二极管阵列仪器可以在几秒钟内记录溶液的整个光谱，因此可以将几个新实验添加到化学课程中，这些实验利用快速数据采集和数据分析软件。 学生有机会使用现代化的，基于计算机的仪器在他们的第一门课程开始，因为他们探索食品染料的吸收光谱。 增强和增加了上师的实验室课程包括从光谱数据的协调几何的表征;动力学实验中，一个瞬态中间体是其次;实验，使用串联技术，光谱电化学;和多组分系统的分析。 该项目还为学生提供了一个系统的经验，该系统集成了许多用于数据分析的软件功能，并说明了验证程序，以确保电子收集数据时的数据质量和完整性。 *

The undergraduate laboratory curricula for general chemistry, inorganic chemistry, physical chemistry, and instrumental analysis can be improved by adding a diode-array ultraviolet-visible spectrophotometer equipped with a temperature controller and a cell for spectroelectrochemistry. Since the entire spectrum of a solution can be recorded in a few seconds using a diode-array instrument, several new experiments can be added to the chemistry curriculum that take advantage of the rapid data acquisition and the data analysis software. Students have the opportunity to use modern, computer-based instrumentation beginning in their first course as they explore the absorption spectrum of food dyes. Enhancements and additions to the upper-division laboratory curriculum include the characterization of coordination geometry from spectral data; kinetics experiments in which a transient intermediate is followed; an experiment that uses a tandem technique, spectroelectrochemistry; and the analysis of multicomponent systems. This project also gives students experience with a system that incorporates numerous software features for data analysis and that illustrates validation procedures to insure data quality and integrity when gathering data electronically. *