Silica supported Fe3O4 magnetic nanoparticles for magnetic solid-phase extraction and magnetic in-tube solid-phase microextraction: application to organophosphorous compounds

被引：48
|
作者：
Moliner-Martinez, Y. [1 ]
Vitta, Yosmery [2 ]
Prima-Garcia, Helena [3 ]
Gonzalez-Fuenzalida, R. A. [1 ]
Ribera, Antonio [3 ]
Campins-Falco, P. [1 ]
Coronado, Eugenio [3 ]
机构：
[1] Univ Valencia, Fac Quim, Dept Quim Analit, E-46100 Valencia, Spain
[2] Cent Univ Venezuela Paseo Ilustres, Fac Sci, Sch Chem, Urb Valle Abajo 20513, Carracas, Venezuela
[3] Univ Valencia, ICMol, Valencia 46980, Spain
来源：
ANALYTICAL AND BIOANALYTICAL CHEMISTRY | 2014年 / 406卷 / 08期
关键词：
Magnetic nanoparticles; Organophosphorous pesticides; Magnetic solid-phase extraction and magnetic in-tube solid-phase microextraction;
D O I：
10.1007/s00216-013-7379-y
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
This work demonstrates the application of silica supported Fe3O4 nanoparticles as sorbent phase for magnetic solid-phase extraction (MSPE) and magnetic on-line in-tube solid-phase microextraction (Magnetic-IT-SPME) combined with capillary liquid chromatography-diode array detection (CapLC-DAD) to determine organophosphorous compounds (OPs) at trace level. In MSPE, magnetism is used as separation tool while in Magnetic-IT-SPME, the application of an external magnetic field gave rise to a significant improvement of the adsorption of OPs on the sorbent phase. Extraction efficiency, analysis time, reproducibility and sensitivity have been compared. This work showed that Magnetic-IT-SPME can be extended to OPs with successful results in terms of simplicity, speed, extraction efficiency and limit of detection. Finally, wastewater samples were analysed to determine OPs at nanograms per litre.
引用
收藏
页码：2211 / 2215
页数：5
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