一个绿色化综合性有机化学实验的设计与教学实践
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摘要
综合"水蒸气蒸馏-萃取-薄层层析"三个实验操作单元,设计半微量绿色化综合性有机化学实验。采用水蒸汽蒸馏法提取八角茴香挥发油,通过溶剂萃取分离出提取物,应用薄层层析法对提取物的成份进行分离鉴定。多个实验知识要点串联,设计合理,实用性和可操作性强。既训练学生综合的实验技能,提高学生的科研素质,又培养创新意识和绿色化学理念,学生学习兴趣浓,取得良好的教学效果。
A green semimicro comprehensive experiment of Organic Chemistry was established. The experiment was combined with three separated experimental operation of steam distillation and solvent extraction and thin-layer chromatography( TLC). In this experiment,the oil fractions in volatile constituents were extracted from star anise fruits by steam distillation,afterwards,the oil composition was isolated by solvent extraction,then TLC was used to analyze and identify some ingredients of the extraction by contrasting with standard sample correlation. The students could practice all-around integrated experiment process,other than the separated experimental operation skills. Therefore,it was not only favorable for the students to improve the overall experimental skills and their ability of scientific research,but also increase students' interests and cultivate innovation and green chemistry concepts,and better teaching effects were achieved.
A green semimicro comprehensive experiment of Organic Chemistry was established. The experiment was combined with three separated experimental operation of steam distillation and solvent extraction and thin-layer chromatography( TLC). In this experiment,the oil fractions in volatile constituents were extracted from star anise fruits by steam distillation,afterwards,the oil composition was isolated by solvent extraction,then TLC was used to analyze and identify some ingredients of the extraction by contrasting with standard sample correlation. The students could practice all-around integrated experiment process,other than the separated experimental operation skills. Therefore,it was not only favorable for the students to improve the overall experimental skills and their ability of scientific research,but also increase students' interests and cultivate innovation and green chemistry concepts,and better teaching effects were achieved.
引文
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[6]李光文,林友文,罗红斌,等.药学实验教学中强化和实施绿色化学理念探讨[J].基础医学教育,2011,13(7):657-659.
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[8]王同禹,田玉红.八角茴香水溶性挥发成分的提取和分析[J].安徽农业科学,2009,37(14):6308-6309,6339.
[9]林友文.有机化学实验指导[M].厦门:厦门大学出版社,2013:11.
[10]徐常龙,曹小华,陶春元,等.通过绿色化学实验培养学生创新能力[J].化工高等教育,2009,26(3):42-44.
[2]陶春元,喻国贞,曹小华,等.大学化学综合性、设计性实验教学实践与探索[J].实验技术与管理,2011,28(6):182-184.
[3]段晓英,姚天明,杨勇,等.巧设综合实验提升综合能力[J].实验室研究与探索,2008,27(4):97-99.
[4]任玉杰.绿色有机化学实验[M].北京:化学工业出版社,2007:1-4.
[5]赵英福,吴兆华,李春彦.在药学专业化学实验中渗透绿色化学新理论[J].解放军药学学报,2008,24(1):90-91.
[6]李光文,林友文,罗红斌,等.药学实验教学中强化和实施绿色化学理念探讨[J].基础医学教育,2011,13(7):657-659.
[7]于丽颖,罗亚楠.构建绿色有机化学实验室的探讨与实践[J].广州化工,2012,40(19):175-176.
[8]王同禹,田玉红.八角茴香水溶性挥发成分的提取和分析[J].安徽农业科学,2009,37(14):6308-6309,6339.
[9]林友文.有机化学实验指导[M].厦门:厦门大学出版社,2013:11.
[10]徐常龙,曹小华,陶春元,等.通过绿色化学实验培养学生创新能力[J].化工高等教育,2009,26(3):42-44.