现代分析仪器在高中化学教学中的应用——以“防晒霜的防晒效果实验探究”为例  

Application of Modern Analytical Instruments in Senior High School Chemistry Teaching:Experimental Research on Sunscreen Effect of Sunscreen

作　　者：陈云[1] 张萍萍[1] CHEN Yun;ZHANG Ping-Ping(Yangzhou Xinhua Middle School,Yangzhou 225002,China)

机构地区：[1]扬州市新华中学,江苏扬州225002

出　　处：《化学教育（中英文）》2022年第5期96-101,共6页Chinese Journal of Chemical Education

基　　金：江苏省教育科学“十三五”规划2018年度普教重点资助课题“基于现代分析技术的高中化学拓展课程实践研究”(立项编号:B-a/2018/02/60);江苏省教育科学“十三五”规划2020年度立项课题“发展关键能力的高中化学实验教学模式研究”(立项编号:D/2020/02/356);江苏省2018年基础教育前瞻性教学改革实验项目(立项文件:苏教办基[2018]6号)。

摘　　要：从高中化学原子、分子等抽象性的知识教学出发,以防晒霜的防晒效果实验探究为例,探讨了现代分析仪器在高中化学教学中的应用。通过利用现代分析仪器紫外可见分光光度计,结合紫外线变色球实验探究防晒霜的防晒效果,分析并认识防晒霜中化学防晒的机理。结果表明,防晒霜的厚度越大、SPF越高,防晒霜的防晒效果越好,并且防晒霜的防晒效果可以持续一段时间,但是不同类型的防晒产品存在一定差异。在化学教学中渗透现代分析仪器的应用,为学生进一步了解化学学科在改变学习方式、拓宽学科知识领域、推动自身全面与可持续发展方面打下坚实的基础。Based on the abstract knowledge teaching of atoms and molecules in high school chemistry, this paper discussed the application of modern analytical instruments in high school chemistry teaching by taking the experiments of sunscreen protection effect as an example. By using the modern analysis instrument UV-Vis spectrophotometer to explore the sunscreen protection effect, analyzed and mastered the chemical sunscreen mechanism combining with the ultraviolet discolor-changing ball experiments. The results showed that the greater the thickness of the sunscreen and the higher the SPF, the better the protection effect of the sunscreen, the sunscreen could last for a period of time, but there were some differences between different types of sunscreen products. The applications of modern analytical instruments in chemistry teaching would lay a solid foundation for students to further understand the chemistry discipline in changing the learning way, broadening the field of subject knowledge, and promoting their comprehensive and sustainable development.

关 键 词：现代分析仪器 紫外光谱 紫外线变色球 防晒 

分 类 号：G633.8[文化科学—教育学]