Preparation of porous carbon-based molecularly imprinted polymers for separation of triazine herbicides in corn

文献类型： 外文期刊

第一作者： Yin, Ran

作者： Yin, Ran;Chen, Ligang;Niu, Na;Yin, Ran;Niu, Na;Gao, Lei;Qin, Dongli

作者机构：

关键词： Molecularly imprinted polymers; Porous carbon; Triazine herbicides; Matrix solid phase dispersion; Cellulose precursor; UPLC

期刊名称：MICROCHIMICA ACTA （ 影响因子：6.408； 五年影响因子：5.888 ）

ISSN： 0026-3672

年卷期： 2022 年 189 卷 1 期

页码：

收录情况： SCI

摘要： A synthesis route of using cellulose as the precursor to prepare porous carbon (PC) had been established in this study. The as-prepared PC was introduced as carriers in the synthesis process of porous carbon-molecularly imprinted polymers (PC-MIPs), which greatly improved the absorption capacity of MIPs. Triazine pesticides in corn were extracted with matrix solid-phase dispersion (MSPD) using the PC-MIPs as dispersants and determined by ultraperformance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). Under the optimal MSPD condition for extracting six kinds of triazines (simazine, terbutryn, simetryne, prometryne, ametryn, and atrazine), the detection limits were 0.005-0.02 ng g(-1), while the precisions were 1.2-5.9%, and the recoveries were 92.6-104.7%. The method has been extensively applied to analyze various corn samples. Atrazine residue (1.2 mu g kg(-1)) was detected in one corn sample, which was lower than the maximum residual limit indicated by the Chinese stated standards (50 mu g kg(-1)).

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