摘要
功能饮料是一类具有保健作用的饮品,通过调整饮料中天然营养素的成分和含量,以适应某些特殊人群的营养需求。饮料中成分含量是否达标直接关系到民众的健康生活,也是国家食品质量监测工作的重要一环。基于山东大学化学与化工学院仪器分析实验课程,学生自主设计实验方案,教师审阅指导监督,联系密切关乎健康的实际问题强化和拓展了实验学习的意义和应用价值——借助原子吸收光谱法对市售功能饮料中锌钠钾离子含量进行检测,并与包装上标明的参考离子含量对比,鉴定其是否存在食品质量问题。本实验能充分发挥学生主观能动性,让学生在实践中加强理论知识学习、提高实操能力、深化对原子吸收光谱法的理解和应用。该实验充分体现了理论源于实践、理论指导实践,灵活运用课程中掌握的知识解决实际问题,使学生切身体会到化学与生活密切联系。
Energy drinks produce various health effects.Adjusting the composition and content of the natural nutrients in drinks can enable them to meet the nutritional needs of special groups of people.The quality of ingredients in beverages is directly related to the health of the people that consume them,and it is also an important part of the national food quality monitoring work.Based on the instrumental analysis experimental course of the School of Chemistry and Chemical Engineering of Shandong University,students independently designed experimental plans while teachers reviewed,guided,and supervised them.Their plans,which were closely associated with practical problems related to health,aimed to strengthen and expand the significance and application value of experimental learning.With the help of atomic absorption spectroscopy,they determined the zinc/sodium/potassium ion contents in commercially available energy drinks.The determined contents were tested and compared with the reference content marked on the package to determine whether there was any food quality problem with the drinks.The experiment conducted by the students completely supported their subjective initiative,enabling them to strengthen their theoretical knowledge learning,improve their practical ability,and deepen their understanding and application of atomic absorption spectroscopy in practice.This experiment fully reflected that theory and practice informed each other and allowed students to flexibly exploit the knowledge they gained in the course to solve practical problems,enabling them to intimately experience the close connection between life and chemistry.
作者
鹿成龙
赵子菡
王国安
路庆明
张斌
徐晓文
Chenglong Lu;Zihan Zhao;Guoan Wang;Qingming Lu;Bin Zhang;Xiaowen Xu(School of Chemistry and Chemical Engineering,Shandong University,Jinan 250100,China)
出处
《大学化学》
CAS
2023年第12期186-192,共7页
University Chemistry
基金
山东大学教育教学改革研究项目(2021Y234)
“基础学科拔尖学生培养计划”研究课题(20180212)。
关键词
仪器分析
设计实验
原子吸收
功能饮料
离子含量
Instrumental analysis
Design experiment
Atomic Absorption Spectrometry
Energy drinks
Ion contents
作者简介
通讯作者:张斌,Emails:binzhang68@sdu.edu.cn;通讯作者:徐晓文,Emails:xuxw@sdu.edu.cn。
