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环保的核心外颗粒涂有分子印记聚合物,用于S-甲基的识别和分离

Dominika Rapacz¹, Katarzyna Smolińska-Kempisty¹, Joanna Wolska¹

¹Wroclaw University of Science and Technology, Department of Process Engineering and Technology of Polymer and Carbon Materials, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland.

Analytica chimica acta

|July 3, 2025

概括

这项研究在PVC颗粒上引入了新的分子印记聚合物,用于检测常见微污染物S-metolachlor. 开发的材料有效地选择性地从水中去除S-甲基,简化了分析.

科学领域:

分析化学分析化学
材料科学材料科学材料科学
环境科学环境科学

背景情况:

水生环境面临由于微污染物而导致的水质恶化.
微污染物度 (ng至μg/L) 通常低于检测极限,使分析复杂化.
开发有效的微量污染物检测方法至关重要.

研究的目的:

开发用于S-甲基检测的新型分子印记聚合物 (MIP).
在使用绿色化学原理的聚乙烯 (PVC) 颗粒上合成MIP.
增强复杂矩阵中除草剂确定分析方法.

主要方法:

在PVC颗粒上合成的核心外MIP和非印刷聚合物 (NIP).
研究了吸附同热度 (弗朗德利希,兰格穆尔,杜比宁-拉杜什基维奇) 和动力学 (伪第一阶,伪第二阶).
对其他除草剂如 fenoxaprop-P-ethyl, atrazine 和 glyphosate 的评价选择性.

主要成果:

弗朗德利希模型最好地描述了吸附,MIP的最大容量为6.24 mg/g.
伪二次动力学提供了最适合吸附数据的方法.
MIPs表现出高选择性,吸收S-甲基~5倍比 fenoxaprop-P-ethyl更好,~4倍比 atrazine,和~2倍比草甘更好.
从模型溶液和真实水样中取得了成功的S-甲基甲吸收.

结论:

在PVC颗粒上的核心外MIP为S-甲基分离提供了一个有前途的方法.
这种方法可以显著减少多组分溶液中除草剂的分析时间.
开发的材料增强了环境分析中微量分析物的样本准备.

关键词:

核心外聚合物的聚合物.绿色的分子印记聚合物.这就是S-甲基甲.智能聚合物是一种智能聚合物.固体相提取的固体相提取方法吸附过程吸附过程

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