Computer-Controlled Spectrometers in Undergraduate Chemistry

本课程通过设计实验，利用计算机控制的分光光度仪，在所有层次的本科实验室，为专业和非专业学生设计实验，以满足课程需求。这使学生能够通过实际操作获得对这些方法的期望接触。目前正在使用两种不同类型的光谱仪。傅里叶变换红外（FT-IR）仪器在有机化学中被大量使用，而在分析化学课程中则较少使用。第二种是基于现有分光光度计的现代化发射分光光度计。这被用于光谱的紫外和可见区域的发射测量。该光谱仪还可作为拉曼光谱实验的探测器。荧光光谱仪主要用于普通实验室、物理实验室和分析化学实验室。两种类型的光谱仪都可以进行光谱减法和数据库检索，并具有信号平均和光谱易于操作的优点。荧光数据系统还允许从时变数据中确定动力学参数。这两种类型的仪器都被整合到从普通化学到高级研究的各级化学和化学工程专业的实验课程中。

This addresses curricular needs by designing experiments to use computer-controlled spectrophotometric instrumentation in the undergraduate laboratory at all levels, for both majors and nonmajors. This enables students to receive the desired exposure to these methods through hands-on use. Two different types of spectrometer are being used. Fourier transform infrared (FT-IR) instruments are being used heavily in organic chemistry and to a lesser extent in analytical chemistry courses. The second type is a modernized emission spectrophotometer based on an existing spectrophotofluorimeter. This is being used for emission measurements in the ultraviolet and visible regions of the spectrum. This spectrometer also serves as a detector in a Raman spectroscopy experiment. The fluorescence spectrometer is being used mostly in general, physical, and analytical chemistry laboratories. Both types of spectrometer allow ready spectral subtraction and database searching and bring the advantages of signal averaging and easy manipulation of spectra. The fluorescence data system also allows the determination of kinetic parameters from time-varying data Both types of instrument are being integrated into the laboratory courses serving chemistry and chemical engineering majors at all levels from general chemistry to senior research.