比较教学法在仪器分析实验项目设计中的应用——以色谱实验教学为例

Application of Comparative Teaching Method in Experimental Project Design of Instrumental Analysis Course:A Case Study in Chromatography Experiment Teaching

色谱分析是常用的现代仪器分析手段。高等院校仪器分析实验课程多将色谱分析列为主要教学内容之一。色谱分析包括气相色谱分析法和液相色谱分析法。气相色谱和液相色谱分析法具有相同点和不同点。基于比较教学法,在仪器分析实验课程中,分别使用气相色谱仪和液相色谱仪完成“苯、甲苯、间二甲苯的色谱分离”实验项目。在教学中,对比气相色谱分析方法和液相色谱分析方法的原理、实验条件、操作方法、实验结果等,从而加深学生对理论课中色谱章节内容的理解和学习,同时也对学生以后的科研训练提供一定的帮助。

Chromatographic analysis represents a prevalent technique within modern instrumental analysis.Chromatography,encompassing both gas and liquid chromatographic methods,is a fundamental component of instrumental analysis experiment course in higher education institutions.Despite their shared separation principles,gas chromatography(GC)and liquid chromatography(LC)exhibit distinct characteristics and applications.Leveraging the comparative teaching method,this study involves the execution of chromatographic separation of benzene,toluene and m-xylene using both GC and LC instruments within the framework of an instrumental analysis experimental course.This comparative approach facilitates a deeper understanding and appreciation of chromatographic techniques among students by elucidating the theoretical underpinnings,experimental conditions,operational methodologies,and outcomes associated with each method.Furthermore,this pedagogical strategy serves as a preparatory step for students’future research endeavors.