农科机构知识库联盟

Facile synthesis of magnetic zinc metal-organic framework for extraction of nitrogen-containing heterocyclic fungicides from lettuce vegetable samples

文献类型：外文期刊

第一作者： Liu, Guangyang

作者： Liu, Guangyang;Huang, Xiaodong;Li, Lingyun;Xu, Donghui;Lu, Meng;Li, Tengfei

作者机构：

关键词： magnetic dispersive solid-phase extraction; magnetic graphene oxide composite; nitrogen heterocycles

期刊名称：JOURNAL OF SEPARATION SCIENCE （影响因子：3.645；五年影响因子：2.943 ）

ISSN： 1615-9306

年卷期： 2019 年 42 卷 7 期

页码：

收录情况： SCI

摘要： We present a simple method for the fabrication of a magnetic amino-functionalized zinc metal-organic framework based on a magnetic graphene oxide composite. The resultant framework exhibited a porous 3D structure, high surface area and good adsorption properties for nitrogen-containing heterocyclic fungicides. The adsorption process and capacity indicated that the primary adsorption mechanism might be hydrogen bonding and p-p conjugation. In addition, an optimized protocol for magnetic solid phase extraction was developed (such as adsorbent content, pH, and desorption solvent), and utilized for the extraction of nitrogen-containing heterocyclic fungicides from vegetable samples. Quantitation by high performance liquid chromatography coupled with tandem mass spectrometry offered a detection limit of 0.211.0 mu g/L (S/N = 3) with correlation coefficients larger than 0.9975. These results demonstrate that magnetic amino-functionalized zinc metal-organic framewor is a promising adsorbent for the extraction and quantitation of nitrogen-containing heterocyclic fungicides.

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