Synthesis, characterization, and application of a Zn (II)-imprinted polymer grafted on graphene oxide/magnetic chitosan nanocomposite for selective extraction of zinc ions from different food samples

被引：46

作者：

Kazemi, Elahe ^{[1
]}

Dadfarnia, Shayessteh ^{[1
]}

Shabani, Ali Mohammad Haji ^{[1
]}

Ranjbar, Mansoureh ^{[1
]}

机构：

[1] Yazd Univ, Dept Chem, Safaieh 89195741, Yazd, Iran

来源：

FOOD CHEMISTRY | 2017年 / 237卷

关键词：

Magnetic solid phase extraction; Flame atomic absorption spectroscopy; Ion imprinted polymer; Graphene oxide; Chitosan; Zinc; SOLID-PHASE EXTRACTION; MOLECULARLY IMPRINTED POLYMERS; ATOMIC-ABSORPTION-SPECTROMETRY; SPECTROPHOTOMETRIC METHOD; CHITOSAN/GRAPHENE OXIDE; EMISSION-SPECTROMETRY; BIOLOGICAL SAMPLES; DIFFERENT MATRICES; TRACE-ELEMENTS; COMPOSITE FILM;

D O I：

10.1016/j.foodchem.2017.06.053

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A novel Zn(II) imprinted polymer was synthesized via a co-precipitation method using graphene oxide/magnetic chitosan nanocomposite as supporting material. The synthesized imprinted polymer was characterized by Fourier transform infrared spectrometry (FTIR) and scanning electron microscopy (SEM) and applied as a sorbent for selective magnetic solid phase extraction of zinc followed by its determination by flame atomic absorption spectrometry. The kinetic and isothermal adsorption experiments were carried out and all parameters affecting the extraction process was optimized. Under the optimal experimental conditions, the developed procedure exhibits a linear dynamic range of 0.5-5.0 mu g L-1 with a detection limit of 0.09 mu g L-1 and quantification limit of 0.3 mu g L-1. The maximum sorption capacity of the sorbent was found to be 71.4 mu g g(-1). The developed procedure was successfully applied to the selective extraction and determination of zinc in various samples including well water, drinking water, black tea, rice, and milk. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：921 / 928

页数：8

共 35 条

[1] Simultaneous determination of Mn2+ and Fe3+ as 4,4′[(4-cholorophenyl)methylene] bis(3-methyl-1-phenyl-1H-pyrazol-5-ol) complexes in some foods, vegetable and water samples by artificial neural networks [J].