首页|Magnetic molecularly imprinted polymer for the simultaneous selective extraction of phenoxy acid herbicides from environmental water samples

Magnetic molecularly imprinted polymer for the simultaneous selective extraction of phenoxy acid herbicides from environmental water samples

扫码查看
原文链接
  • NSTL
  • Elsevier
A selective magnetic molecularly imprinted polymer (MMIP) was synthetized with 4-chloro-2-methylphenoxyacetic acid as template and 4-vinylpiridine as monomer in presence of vinylized magnetite nanoparticles. Scanning electron microscopy, nitrogen adsorption-desorption isotherms, Fourier transform infrared spectrometry and vibrating sample magnetometry were applied to characterize the resulting material. The synthesized MMIP was applied as sorbent in magnetic molecularly imprinted solid-phase extraction (MMISPE) for selective extraction of a mixture of the five herbicides 4-chloro-2-methylphenoxyacetic acid (MCPA), 4-(4-chloro-2methylphenoxy)butyric acid (MCPB), mecoprop (MCPP), fenoxaprop (FEN) and haloxyfop (HAL). Several parameters affecting the extraction conditions were optimized to achieve the best extraction performance. The best MMISPE combined with HPLC-DAD gave detection and quantification limits between 0.33 and 0.71 mu g L-1 and 1.1-2.4 mu g L-1, respectively, were obtained. The precision of the whole method provided RSD values below 7.3%, and the accuracy was demonstrated by the analysis of several water samples of different origins, with recoveries ranged from 77 to 98%. Moreover, a remarkable re-usability of the MMIP sorbent, more than 65 uses without losses in extraction capacity, was obtained.

Phenoxyacid herbicidesMagnetic molecularly imprinted solid-phaseextractionMolecularly imprinted polymerMagnetic nanoparticlesHPLCWater samplesSOLID-PHASE EXTRACTIONLIQUID-CHROMATOGRAPHYPESTICIDE MULTIRESIDUESCARBOXYLIC-ACIDSNANOPARTICLESEFFICIENCYSORBENT

Meseguer-Lloret, Susana、Torres-Cartas, Sagrario、Gomez-Benito, Carmen、Manuel Herrero-Martinez, Jose

展开 >

Univ Politecn Valencia

Univ Valencia

2022

10.1016/j.talanta.2021.123082

Talanta

Talanta

EISCI
ISSN：0039-9140
年,卷(期)：2022.239
  • 12
  • 46