大学化学 >> 2021, Vol. 36 >> Issue (9): 2101042.doi: 10.3866/PKU.DXHX202101042

所属专题: 分析化学课程与实验教学

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2,4-滴原药中游离酚的含量测定——推荐一个农药相关杂质的紫外分光光度分析实验

韩丽君(), 徐彦军, 郝向洪, 刘丰茂, 刘丹, 潘灿平   

  • 收稿日期:2021-01-22 录用日期:2021-02-28 发布日期:2021-03-18
  • 通讯作者: 韩丽君 E-mail:hlj2000@cau.edu.cn
  • 作者简介:韩丽君, Email: hlj2000@cau.edu.cn
    第一联系人:

    为共同第一作者

Recommend a Spectrophotometric Method for the Determination of Pesticide Related Phenol Impurities in 2,4-D Technical Material

Lijun Han(), Yanjun Xu, Xianghong Hao, Fengmao Liu, Dan Liu, Canping Pan   

  • Received:2021-01-22 Accepted:2021-02-28 Published:2021-03-18
  • Contact: Lijun Han E-mail:hlj2000@cau.edu.cn

摘要:

推荐了采用紫外-可见分光光度法测定2,4-滴原药中游离酚杂质含量的学生实验,综合了农药质量分析与农药相关杂质的概念,结合称量、涡旋、移液等样品前处理实验技能,又涉及紫外分光光度计的原理与使用方法,使学生掌握采用紫外分光光度法进行定量测定的方法学及数据处理方法。此实验能全面锻炼学生的实验技能,并培养其初步的科研思维能力,增强实践应用能力。

关键词: 推荐教学实验, 农药分析, 紫外分光光度法, 2,4-滴, 2,4-二氯苯酚

Abstract:

This paper recommended an experiment of determination of 2,4-dichlorophenol in 2,4-D technical material using UV-Vis spectrophotometric method. The concepts of pesticide quality analysis and pesticide related impurities, the principle and application of ultraviolet spectrophotometer, and various sample pretreatment experimental skills such as weighing, vortexing and liquid transferring were involved, so as to enable students to master the methodology and data processing of quantitative determination using ultraviolet spectrophotometry. This experiment can exercise students' comprehensive experimental skills, cultivate their preliminary scientific research thinking, and enhance their practical application ability.

Key words: Student experiment recommendation, Pesticide analysis, UV spectrophotometry, 2,4-D, 2,4-Dichlorophenol

MSC2000: 

  • G64