色谱 ›› 2025, Vol. 43 ›› Issue (10): 1170-1176.DOI: 10.3724/SP.J.1123.2025.04005

• 教学研究 • 上一篇    下一篇

“以建辅赛-以赛孵教-以教促学”闭环教学创新模式的构建与实践——以微等离子体-发射光谱仪器装置搭建及痕量元素分析实验为例

薛婉怡, 可迪, 张晓, 周晓东, 杨睿宁, 晁青岑, 陈明丽, 孟皓, 杨婷()   

  1. 东北大学理学院,辽宁 沈阳 110004
  • 收稿日期:2025-04-06 出版日期:2025-10-08 发布日期:2025-09-24
  • 通讯作者: *Tel:(024)83687659,E-mail:yangting@mail.neu.edu.cn.

Construction and practice of the “Construction Supports Competitions-Competitions Nurture Teaching-Teaching Promotes Learning” closed-loop innovative teaching mode: a case study of micro-plasma emission spectrometer setup and trace element analysis experiment

XUE Wanyi, KE Di, ZHANG Xiao, ZHOU Xiaodong, YANG Ruining, CHAO Qingcen, CHEN Mingli, MENG Hao, YANG Ting()   

  1. College of Sciences,Northeastern University,Shenyang 110004,China
  • Received:2025-04-06 Online:2025-10-08 Published:2025-09-24

摘要:

实验教学作为学生理论知识与实践能力之间的桥梁,能够深化学生对知识的理解,提升学生解决复杂问题的能力,为培养高素质的化学拔尖创新人才提供关键支撑。东北大学理学院化学实验教学中心在把握高等教育发展规律与创新人才成长规律的基础上,瞄准人才培养中存在的科研与教学壁垒难以贯通问题,提出“以建辅赛-以赛孵教-以教促学”闭环教学创新模式。该模式立足拔尖创新人才培养要求,充分发挥学科竞赛的实践反哺作用,打造“竞赛孵化→教学转化→能力反哺”动态反馈机制。本文以化学创新设计大赛获奖作品《微等离子体-发射光谱仪器装置搭建及痕量元素分析》为例验证该模式在传统实验教学上的突破,通过4学时的实验课程设计,学生自主搭建介质阻挡放电微型原子发射光谱装置,结合氢化物发生进样技术完成痕量砷检测,在20~500 μg/L范围内呈现良好的线性关系,决定系数(R2)为0.997。教学实践表明,学生在动手搭建的过程中实现了对原理认知的深化和仪器构造的透明化理解,促进了教学质量的提升,为“两性一度”课程改革提供了可推广的创新范式。

关键词: 实验教学, 教学模式创新, 仪器装置搭建, 介质阻挡放电

Abstract:

Experimental teaching, serving as a bridge between theoretical knowledge and practical competence, can deepen students’ understanding of theoretical concepts, and enhance their ability to solve complex problems, thereby playing a pivotal role in cultivating elite chemistry talents for the national innovation system. By understanding the laws of higher education development and innovative talent growth, the Chemistry Experiment Teaching Center of the College of Sciences at Northeastern University has innovatively proposed a closed-loop teaching model: “Construction Supports Competitions-Competitions Nurture Teaching-Teaching Promotes Learning”, aiming at the problem of difficult barrier between scientific research and pedagogy in talent development. This model is based on the requirements for cultivating top innovative talents, leveraging the practical feedback of disciplinary competitions, and creating a dynamic feedback mechanism of “Competition Incubation→Teaching Transformation→Competency Feedback”. Taking the award-winning project “Micro-Plasma Emission Spectrometer Setup and Trace Element Analysis Experiment” from the Chemistry Innovation Design Competition as an example, this study demonstrates the model’s breakthrough in traditional experimental teaching. Through a 4-class-hour experimental course, students independently construct a dielectric barrier discharge (DBD) micro atomic emission spectroscopy device, combined with hydride generation (HG) introduction technology to complete trace arsenic detection. The method showed a good linear relationship in the mass concentration range of 20-500 μg/L, with a coefficient of determination (R2) of 0.997. Teaching practice shows that students deepened their understanding of principles and made the instrument structure transparent through hands-on construction, promoting the improvement of teaching quality and providing a scalable innovative paradigm for the “high-order, innovative, and challenging” curriculum reform.

Key words: experimental teaching, innovation in teaching mode, construction of instrument devices, dielectric barrier discharge (DBD)

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