Article(id=1322945511292023134, tenantId=1146029695717560320, journalId=1283840372199657495, issueId=1322945454501143426, articleNumber=null, orderNo=null, doi=10.3724/SP.J.1123.2025.04005, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1743868800000, receivedDateStr=2025-04-06, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793344389030, onlineDateStr=2026-10-30, pubDate=1759852800000, pubDateStr=2025-10-08, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793344389030, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793344389030, creator=13701087609, updateTime=1793344389030, updator=13701087609, issue=Issue{id=1322945454501143426, tenantId=1146029695717560320, journalId=1283840372199657495, year='2025', volume='43', issue='10', pageStart='1089', pageEnd='1183', issueExtLink='null', onlineDate='null', pubDate='1759852800000', pubDateStr='2025-10-08', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793344375491, creator='13701087609', updateTime=1793345195645, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322948894535058273, tenantId=1146029695717560320, journalId=1283840372199657495, issueId=1322945454501143426, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322948894535058274, tenantId=1146029695717560320, journalId=1283840372199657495, issueId=1322945454501143426, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1170, endPage=1176, ext={EN=ArticleExt(id=1322945511451406687, articleId=1322945511292023134, tenantId=1146029695717560320, journalId=1283840372199657495, language=EN, title=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, columnId=1284557520073110421, journalTitle=Chinese Journal of Chromatography, columnName=Teaching Research, runingTitle=null, highlight=null, articleAbstract=

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.

, authors=Wanyi XUE, Di KE, Xiao ZHANG, Xiaodong ZHOU, Ruining YANG, Qingcen CHAO, Mingli CHEN, Hao MENG, Ting YANG, authorsList=Wanyi XUE, Di KE, Xiao ZHANG, Xiaodong ZHOU, Ruining YANG, Qingcen CHAO, Mingli CHEN, Hao MENG, Ting YANG, authorCompany=null, correspAuthors=Ting YANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1322945512969744751, articleId=1322945511292023134, tenantId=1146029695717560320, journalId=1283840372199657495, language=CN, title=“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, columnId=1284557520232493975, journalTitle=色谱, columnName=教学研究, runingTitle=null, highlight=null, articleAbstract=

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。

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Chengdu： Chengdu University of Technology， 2023, articleTitle=null, refAbstract=null), Reference(id=1322946532114309739, tenantId=1146029695717560320, journalId=1283840372199657495, articleId=1322945511292023134, doi=null, pmid=null, pmcid=null, year=2023, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[17], rfOrder=32, authorNames=杨睿婕, journalName=成都： 成都理工大学, refType=null, unstructuredReference=杨睿婕. ［硕士学位论文］. 成都： 成都理工大学， 2023, articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1322946525134987776, tenantId=1146029695717560320, journalId=1283840372199657495, articleId=1322945511292023134, xref=null, ext=[AuthorCompanyExt(id=1322946525143376385, tenantId=1146029695717560320, journalId=1283840372199657495, articleId=1322945511292023134, companyId=1322946525134987776, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=College of Sciences，Northeastern University，Shenyang 110004，China), AuthorCompanyExt(id=1322946525151764994, tenantId=1146029695717560320, journalId=1283840372199657495, articleId=1322945511292023134, companyId=1322946525134987776, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=东北大学理学院，辽宁 沈阳 110004)])], figs=[ArticleFig(id=1322946528159081016, tenantId=1146029695717560320, journalId=1283840372199657495, articleId=1322945511292023134, language=EN, label=Fig. 1, caption=Closed-loop innovative teaching model diagram of “Construction Supports Competitions-Competitions Nurture Teaching-Teaching Promotes Learning”, figureFileSmall=8Fr87iWToi9rm6ZJ9Sh55w==, figureFileBig=GhBVCYgQjptbHs6RyNlD6Q==, tableContent=null), ArticleFig(id=1322946528230384185, tenantId=1146029695717560320, journalId=1283840372199657495, articleId=1322945511292023134, language=CN, label=图1, caption=“以建辅赛-以赛孵教-以教促学”的闭环创新教学模式图, figureFileSmall=8Fr87iWToi9rm6ZJ9Sh55w==, figureFileBig=GhBVCYgQjptbHs6RyNlD6Q==, tableContent=null), ArticleFig(id=1322946528318464570, tenantId=1146029695717560320, journalId=1283840372199657495, articleId=1322945511292023134, language=EN, label=Fig. 2, caption=Schematic diagram of the experimental setup, figureFileSmall=SpcmmZBHS1WYE672q8OEhg==, figureFileBig=pIjDMVZtN99FcocugFcWCQ==, tableContent=null), ArticleFig(id=1322946528377184827, tenantId=1146029695717560320, journalId=1283840372199657495, articleId=1322945511292023134, language=CN, label=图2, caption=实验原理图

DBD： dielectric barrier discharge； CCD： charge coupled device.

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HG： hydride generation； OES： optical emission spectroscopy. The atomic emission characteristic lines of arsenic （As） are as follows： 1. 228.60 nm； 2. 234.75 nm； 3. 273.86 nm； 4. 277.33 nm； 5. 285.37 nm.

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Parameter settings for the teaching experiment

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Parameter	Value
CCD spectrometer integration time	100 ms
Input voltage	75 V （AC）
Argon flow rate	0.4 L/min
NaBH4 mass fraction	0.5%
HCl mass fraction	5%

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教学实验参数设置

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Parameter	Value
CCD spectrometer integration time	100 ms
Input voltage	75 V （AC）
Argon flow rate	0.4 L/min
NaBH4 mass fraction	0.5%
HCl mass fraction	5%

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Experimental teaching schedule

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Teaching stage	Class hours	Core tasks	Competency objectives
Safety education	0.5	safety protocols education and emergency training	awareness of safety protocols
Experimental principles	0.5	characteristics of DBD microplasma excitation source； principles of HG and its sampling advantages	understanding of device principles
Device construction	2	assembly of DBD reactor and circuit connection； integration and debugging of gas path system	precision operation； fault diagnosis
Performance testing	1	data acquisition and standard curve establishment	data analysis skills
After-class expansion	-	exploration of testing methods for new elements	innovative thinking cultivation

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实验教学安排

, figureFileSmall=null, figureFileBig=null, tableContent=

Teaching stage	Class hours	Core tasks	Competency objectives
Safety education	0.5	safety protocols education and emergency training	awareness of safety protocols
Experimental principles	0.5	characteristics of DBD microplasma excitation source； principles of HG and its sampling advantages	understanding of device principles
Device construction	2	assembly of DBD reactor and circuit connection； integration and debugging of gas path system	precision operation； fault diagnosis
Performance testing	1	data acquisition and standard curve establishment	data analysis skills
After-class expansion	-	exploration of testing methods for new elements	innovative thinking cultivation

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