“自主设计实验”教学模式在仪器分析实验中的应用——ICP-OES检测茶水中的金属含量  

The Application of“Self-Designed Experiment”Teaching Mode in the Instrumental Analysis Experiment:Determination of Metal Elements in Tea by ICP-OES

作　　者：高敏莉 何博锐 董佳欣 费澄莹 傅舒帆 丁佳欣 顾思奕 李瀚洋 李嘉媛 丁祖旺 丁敬康 衡幸睿 丁飞[1,2] 陈朗星[1] 朱义州[1] 王京[1,2] Minli Gao;Borui He;Jiaxin Dong;Chengying Fei;Shufan Fu;Jiaxin Ding;Siyi Gu;Hanyang Li;Jiayuan Li;Zuwang Ding;Jingkang Ding;Xingrui Heng;Fei Ding;Langxing Chen;Yizhou Zhu;Jing Wang(College of Chemistry,Nankai University,Tianjin 300071,China;National Demonstration Center for Experimental Chemistry Education,Nankai University,Tianjin 300071,China;School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China)

机构地区：[1]南开大学化学学院,天津300071 [2]化学国家级实验教学示范中心(南开大学),天津300071 [3]天津大学化工学院,天津300072

出　　处：《大学化学》2023年第10期235-242,共8页University Chemistry

基　　金：南开大学本科教育教学改革项目(NKJG2020335);南开大学2022年实验课程改革项目(22NKSYSX08)。

摘　　要：仪器分析实验是重要的实践课程,是培养学生创新意识和提高学生综合素质的关键基础课程之一。“自主设计实验”坚持学生主体地位,引导学生查阅文献、拟定实验方案,在教师辅助指导下,将知识要点有效融入实验过程,深化理论学习和实践应用。本实验利用电感耦合等离子体原子发射光谱(ICP-OES)测定不同种类茶水中的金属元素含量,并且考察了浸泡时间和浸泡次数对金属元素溶出量的影响,鉴定其是否符合国家标准要求,对比现有的文献数据作出补充和改善,为人们选取泡茶方式提供理论依据和指导建议。“自主设计实验”将化学和日常生活紧密联系在一起,激发学生的学习热情和探索精神,强化实验操作能力及自主学习能力,提升学生的创新意识和实践精神。Instrument analysis experiment is an important practical course.It’s the basis for cultivating students’innovative awareness and improving students’comprehensive quality.“Self-designed experiment”adheres to the principal position of students,guides students to consult literature and formulate experimental plans by themselves.It effectively integrates the key points of knowledge into the experimental process under the assistance and guidance of teachers,so as to deepen the theoretical learning and the practical application.In this experiment,inductively coupled plasma optical emission spectrometry(ICP-OES)was used to determine the content of metal elements in different kinds of tea.The influence of soaking time and the number of soaking on the dissolution of metal elements was investigated to identify whether it met the requirements of national standards,and the existing literature data were compared to supplement and improve.It provides the theoretical basis and guidance for people to choose the way of brewing tea.“Self-designed experiment”closely links chemistry with daily life,stimulates students’learning enthusiasm and exploration spirit,aims to strengthen students’experimental operation ability and autonomous learning ability,and enhance students’innovative awareness and practical spirit.

关 键 词：仪器分析实验 教学改革 自主设计实验 电感耦合等离子体发射光谱法 茶 金属 

分 类 号：G64[文化科学—高等教育学] O63[文化科学—教育学]