采用双层氢氧化物在多孔阳极氧化铝丝上沉积合成印迹聚合物，制备三重固相微萃取纤维，用于地高辛的预浓缩。
Preconcentration of digoxin using a synthetic imprinted polymer deposited upon the surface of double-layered hydroxides on porous anodised aluminium wire a triple solid-phase microextraction fibre.
机构信息
Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh, Iran.
Research Centre for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran.
出版信息
Phytochem Anal. 2020 Sep;31(5):636-642. doi: 10.1002/pca.2929. Epub 2020 Mar 12.
INTRODUCTION
A new solid-phase microextraction fibre is fabricated through polymerisation of molecularly imprinted polymer on the surface of a layered double hydroxide framework that has been fabricated via the in situ synthesis on a non-porous anodic aluminium oxide/aluminium wire as both the substrate and the aluminium source.
OBJECTIVE
The synthesized SPME fiber was performed to analyze trace digoxin in real samples.
MATERIAL AND METHOD
A one-at-a-time optimization strategy was applied for optimizing the important extraction parameters such as extraction solvent, extraction time, stirring rate, pH, ionic strength, and desorption time.
RESULT
Aluminum surface before and after anodizing and LDH structure reveal that anodizing and preparation LDH increases the surface area and adsorption capacity of aluminum wire.
CONCLUSION
Under optimum conditions, the repeatability for one fibre (n = 3), expressed as relative standard deviation (RSD %), was 5.2%.
简介
通过在原位合成的基础上，将分子印迹聚合物聚合在层状双氢氧化物骨架表面上，制备了一种新型固相微萃取纤维，该骨架是在无孔阳极氧化铝/铝线上合成的，该线既是基底又是铝源。
目的
合成的 SPME 纤维用于分析实际样品中的痕量地高辛。
材料与方法
采用单因素优化策略优化了萃取溶剂、萃取时间、搅拌速率、pH 值、离子强度和洗脱时间等重要萃取参数。
结果
对阳极氧化前后的铝表面和 LDH 结构进行了分析，结果表明，阳极氧化和制备 LDH 增加了铝线的表面积和吸附容量。
结论
在最佳条件下，一根纤维（n = 3）的重复性表示为相对标准偏差（RSD%）为 5.2%。
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