色谱 ›› 2026, Vol. 44 ›› Issue (9): 1074-1081.DOI: 10.3724/SP.J.1123.2025.10020

• 教学研究 • 上一篇    下一篇

仪器分析自主实验设计:在线固相萃取-高效液相色谱-柱后衍生测定蔬菜中痕量农药残留

李琰, 刘韫滔, 黄熙恩, 周子易, 王梓丘, 王京, 丁飞, 南晶, 唐安娜*()   

  1. 南开大学化学学院,化学国家级实验教学示范中心,天津 300071
  • 收稿日期:2025-10-28 出版日期:2026-09-08 发布日期:2026-09-17
  • 通讯作者: *E-mail:tanganna@nankai.edu.cn.
  • 作者简介:

    本文为“样品前处理分离富集技术在教学中的应用与探讨专辑”稿件.

  • 基金资助:
    南开大学实验教学改革项目(24NKZZYQ03)

Self-designed experiment in instrumental analysis: online solid phase extraction-high performance liquid chromatography- post column derivatization for the determination of trace pesticide residues in vegetables

LI Yan, LIU Yuntao, HUANG Xien, ZHOU Ziyi, WANG Ziqiu, WANG Jing, DING Fei, NAN Jing, TANG Anna*()   

  1. College of Chemistry,Nankai University,National Demonstration Center for Experimental Chemistry Education,Tianjin 300071,China
  • Received:2025-10-28 Online:2026-09-08 Published:2026-09-17
  • Supported by:
    Nankai University Experimental Teaching Reform Project(24NKZZYQ03)

摘要:

为顺应国家现代教育理念及创新型人才培养的要求,仪器分析实验课程在常规实验的基础上增设了学生自主设计实验环节。这一改革旨在强化学生“学以致用”能力的培养,使学生在掌握仪器操作技能的同时,能预判和解决实验过程中所遇到的实际问题。在教师的指导下,学生自主搭建了在线固相萃取-液相色谱分离-柱后衍生荧光检测装置,建立了蔬菜样品中痕量氨基甲酸酯类农药的检测方法,并通过实践攻克了提升方法灵敏度与精密度、消除基质干扰、实现快速分析等关键技术难题。该自主设计实验从学生的学习特点和兴趣出发,有效激发了学生的学习主动性和创新潜能,显著提升了教学效果与学习效率。

关键词: 自主设计实验, 在线固相萃取, 高效液相色谱, 柱后衍生, 农残分析

Abstract:

In line with modern educational concepts and the demand for innovative talents, a course focused on self-designed experiments has been incorporated into the traditional instrumental analysis curriculum. This initiative aims to enhance students’ ability to apply knowledge effectively. While mastering instrument operation, students are encouraged to anticipate potential challenges during experiments. Under instructor guidance, students constructed an online system for solid-phase extraction coupled with liquid chromatography and post-column derivatization with fluorescence detection. They addressed real analytical needs such as improving sensitivity and precision, minimizing interference, and conducting rapid analyses of trace carbamate pesticides in vegetable samples. This self-designed liquid chromatography experiment course, tailored to students’ learning characteristics and interests, successfully engages their initiative and fosters independent innovation capabilities. As a result, it also improves teaching effectiveness and enhances learning efficiency.

Key words: self-designed experiment, online solid-phase extraction (online SPE), high performance liquid chromatography (HPLC), post-column derivatization, pesticide residue analysis

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