单分散Au纳米粒子液相合成与快速检测三聚氰胺——本科生综合化学实验  

Undergraduate Comprehensive Chemical Experiment:Liquid Phase Synthesis of Monodisperse Au Nanoparticles and Rapid Detection of Melamine

作　　者：孙根班 林浩[2] 李雅静 廖庆亮 张跃[1] SUN Gen-Ban;LIN Hao;LI Ya-Jing;LIAO Qing-Liang;ZHANG Yue(School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China;College of Chemistry,Beijing Normal University,Beijing 100875,China)

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]北京师范大学化学学院,北京100875

出　　处：《化学教育（中英文）》2018年第24期49-54,共6页Chinese Journal of Chemical Education

基　　金：国家自然科学基金(21771024)

摘　　要：利用Au纳米粒子与三聚氰胺相互作用产生的颜色变化来快速评估牛奶中三聚氰胺的含量,采用透射电子显微镜表征Au纳米粒子与三聚氰胺作用前后的形貌变化,通过用紫外-可见吸收光谱数据绘制标准工作曲线来定量测定牛奶中三聚氰胺的含量。该实验贴近生活,学以致用,同时也有助于学生掌握无机化学和分析化学基本操作,对增强学生分析解决问题的能力,提升学生的科研素养也有帮助。In this paper,a rapid estimated value of melamine content in milk was carried out by using color changes generated by the interaction between Au nanoparticles and melamine. Transmission electron microscopy (TEM)was used to characterize the morphology of Au nanoparticles before and after the interaction of melamine to clarify the mechanism.Comprehensive chemical experiments for the quantitative determination of melamine in milk by drawing standard working curve with UV-visible absorptionspectral data.The experiment is close to life and can be applied to practice.Meanwhile,it is also helpful for students to master the basic operations of inorganic chemistry and analytical chemistry,which has a significant impact on enhancing students’ability to analyze and solve problems and improving students’scientific literacy.

关 键 词：AU纳米粒子 三聚氰胺 比色法 紫外-可见吸收光谱 定量分析 

分 类 号：G642[文化科学—高等教育学] TB383.1-4[文化科学—教育学]