Abstract: To explore effective teaching methods for integrating advanced instrumental analysis techniques with practical applications, this paper discusses the teaching practice of the experiment titled “Distinguishing Green Plastic Bags by Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy (ATR-FTIR)” in the university's instrumental analysis course. Through well-designed experimental cases, teaching content, and lesson plans, the goal is to guide students in deeply understanding and mastering the principles, characteristics, applications, and operational methods of ATR-FTIR. This approach aims to cultivate their learning abilities, practical skills, and innovative capabilities. By incorporating elements of environmental protection related ideological education within the context of distinguishing green plastic bags, the course not only helps students master advanced instrumental analysis techniques but also enhances their awareness of environmental protection and social responsibility. This experimental teaching provides valuable insights and practical experience for the cultivation of high-quality talents with strong practical abilities and a sense of responsibility.

Key words: Instrumental analysis experiment, Infrared spectroscopy, Attenuated total reflectance, Ideological and political education