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

doi:10.3866/PKU.DXHX202101042

Abstract

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:

Lijun Han, Yanjun Xu, Xianghong Hao, Fengmao Liu, Dan Liu, Canping Pan. Recommend a Spectrophotometric Method for the Determination of Pesticide Related Phenol Impurities in 2,4-D Technical Material[J].University Chemistry, 2021, 36(9): 2101042.

Figures/Tables 5

References 10

1	农药相关杂质的评价与判定. [2021-02-25]. https://www.sohu.com/a/249214082_99901401
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标样No.	体积V/mL	吸光度值(Abs)
1	0.1	0.099
2	0.2	0.212
3	0.4	0.419
4	0.6	0.664
5	0.8	0.876
6	1.0	1.101

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

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