摘要
针对当前焰色反应改进实验存在的不足,以手持技术数字化实验教学作为媒介,提出运用DIY光谱仪探究焰色反应的创新实验教学。利用DIY光谱仪捕捉的分光图像和导出的发射光谱,详细分析了单金属元素和双金属元素焰色反应,实现了精准的金属元素定性分析。在此基础上,解析了焰色反应现象背后的基本原理,并引入曳光弹作为焰色反应教学拓展内容,充分挖掘了焰色反应在普通化学和公安高校法庭科学中的教育功能。
Handheld technology digital experiment teaching is employed as a tool to improve the flame test.A creative design of experiment teaching is proposed based on the investigation of the flame test using a DIY spectrometer.By using the camera images and emission spectra measured by the DIY spectrometer,accurate qualitive analysis of metallic elements is realized by studying the flame test of single metallic elements and double metallic elements.The basic principle of flame tests behind the experimental phenomena is explained.The background information of tracer bullets is also introduced as an extension of the flame test teaching.Therefore,the educational function of flame test in general chemistry and forensic chemistry of public security universities is further explored and extended in this study.
作者
袁传军
YUAN Chuan-Jun(College of Forensic Sciences,Criminal Investigation Police University of China,Shenyang 110035,China;Research Center of Crime Governance in the New Era,Criminal Investigation Police University of China,Shenyang 110035,China)
出处
《化学教育(中英文)》
北大核心
2025年第4期78-84,共7页
Chinese Journal of Chemical Education
基金
国家自然科学基金资助项目(21802169)
辽宁省教育科学“十四五”规划2022年度科教融合驱动公安技术创新型人才培养研究课题(课题批准号:JG22DB690)成果。
关键词
手持技术
实验教学
光谱仪
焰色反应
曳光弹
handheld technology
experiment teaching
spectrometer
flame test
tracer bullet
