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多年来,我从事分析化学课的教学,常常在带学生的实验中遇到一些不正常的“怪现象”,在讲课或答疑中也能发现一些不易理解或不大好解释的问题,为了对这些现象和问题得到满意的解决,我除了请教书本和同行前辈以外,也经常带领同学查资料,做实验,开展小型的科研活动。通过这些过程,使一部分问题可以得到较深入的理解。我认为结合基础课教学搞点科研,对教学大有益处,在实践上也是可行的。就我带学生的一个分析实验而言,用硝酸钠重氮化法测定扑热息痛(对乙酰氮基酚)含量,这个实验我
Over the years, I have been teaching analytical chemistry classes, often encountering some strange “strange phenomena” in experimenting with students, and have found some problems that are not easy to understand or not well explained in my lectures or answering questions. Phenomena and problems are satisfactorily resolved. Apart from asking books and peer predecessors, I often lead students to check information, conduct experiments and carry out small-scale scientific research activities. Through these processes, some problems can be more deeply understood. I think the combination of basic teaching to engage in scientific research, teaching a great benefit, in practice is feasible. In my analysis of an experiment with a student, we measured the paracetamol (paracetamol) content by sodium diazotization