摘要
介绍了使用自动萃取仪和旋转蒸发仪提取咖啡因的实验方法，并用改进的升华装置代替了传统的蒸发皿漏斗法。通过比较现代化学实验手段和常规实验方法的联系和区别，进一步理解现代化学仪器方便、快速、精确的特点。教学过程中，传统方法与现代方法相结合，丰富了有机化学实验内涵和技术手段，提高了学生学习化学知识的兴趣，收到了很好的教学效果。
This article introduced an experimental method for extracting caffeine from teas by automatic extraction apparatus and rotary evaporator, provided an improved sublimation device instead of the traditional method based on funnel evaporating dish, discussed the relationships and differences between modern chemical experimental means and conventional laboratory meth- ods. The new method was useful to understand the characteristics of modern chemistry instru- ments such as convenient, fast and accurate. The combination of traditional and modern methods could enrich the connotation and technical means of organic chemistry experiment, enhance students＇ interest of learning chemistry, and therefore achieved good teaching effects.
出处
《化学教育》
CAS
北大核心
2015年第8期28-30,共3页
Chinese Journal of Chemical Education
基金
大连理工大学教育教学改革基金项目“结合网络实验教学资源”
进行“普通化学实验”教学改革的探索(ZX2014004)
多样化的考核方法探索与评价机制改革——面向普通化学(MS201368)
关键词
咖啡因提取
茶叶
实验装置
化学实验教学
extraction of caffeine
tea
experimental device
chemical experiment teaching
作者简介
E-mail：tandz@dlut．edu．cn
