大学化学 >> 2025, Vol. 40 >> Issue (2): 1-10.doi: 10.12461/PKU.DXHX202402027

所属专题: 教学型仪器的研制&改进与实验教学

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新冠病毒光热/比色双模态定量综合性实验设

曾景斌1, 王文静1, 赵田雨1, 郭庚辰1, 矫春鹏1, 江永忠2, 温聪颖1   

  1. 1 中国石油大学(华东)化学化工学院, 山东 青岛 266580;
    2 湖北省疾病预防控制中心, 武汉 430065
  • 收稿日期:2024-02-08 录用日期:2024-04-15 发布日期:2025-02-22
  • 通讯作者: 温聪颖 E-mail:flcyxt@163.com
  • 基金资助:
    国家自然科学基金面上项目(21876206,22376218);山东省自然科学基金面上项目(ZR2020MB064);山东省重大基础研究项目(ZR2020ZD13);中国石油大学教学改革项目(CM2022027,CZ2022009)

Design of a Comprehensive Experiment for Photothermal/Colorimetric Dual-Mode Quantification of SARS-CoV-2

Jingbin Zeng1, Wenjing Wang1, Tianyu Zhao1, Gengchen Guo1, Chunpeng Jiao1, Yongzhong Jiang2, Congying Wen1   

  1. 1 College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong Province, China;
    2 Hubei Provincial Center for Disease Control and Prevention, Wuhan 430065, China
  • Received:2024-02-08 Accepted:2024-04-15 Published:2025-02-22
  • Contact: Congying Wen E-mail:flcyxt@163.com

摘要: 设计了“新冠病毒光热/比色双模态定量综合性实验”,通过开发在近红外光下具有高效光热转换效率的标记纳米探针,结合自行搭建的小型光热成像仪,有效克服了商用胶体金试纸条灵敏度低和不能准确定量的问题。该法操作简便快速,只需15 min即可完成,能够实现裸眼比色定性和光热信号定量检测,检测限低至1.2 pg·mL-1,相比于胶体金试纸条,不仅实现了准确定量,且灵敏度提高了近10000倍,极大地缩短了病毒检测的窗口期。教学实践表明,该实验能够提高学生的综合能力、开拓其学术视野,并培养学生的科研素养和创新潜能。

关键词: Aushell-Fe3O4纳米粒子, 比色检测, 光热检测, 试纸条, 新冠病毒

Abstract: We have designed a comprehensive experiment for the photothermal/colorimetric dual-mode quantification of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). By developing label nanoprobes with high photothermal conversion efficiency under near-infrared light and integrating them with a self-built small photothermal imager, we have effectively addressed the limitations of commercial colloidal gold test strips, such as low sensitivity and inability to quantify. This method is rapid and user-friendly, requiring only 15 minutes to complete, and enables both naked-eye colorimetric qualification and photothermal accurate quantification. With a detection limit as low as 1.2 pg·mL-1, this method surpasses commercial colloidal gold test strips by achieving accurate quantitative detection and improving sensitivity by nearly 10,000 times, significantly reducing the detection window period. Teaching practices have shown that this experiment enhances students’ comprehensive abilities, expands their academic horizons, and nurtures their scientific research literacy and innovation potential.

Key words: Aushell-Fe3O4 nanoparticles, Colorimetric detection, Photothermal detection, Test strip, SARS-CoV-2