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Metal-organic framework mixed-matrix disks: versatile supports for automated solid-phase extraction prior to chromatographic separation

Citation

Ghani, M and Pico, MFF and Salehinia, S and Cabello, CP and Maya, F and Berlier, G and Saraji, M and Cerda, V and Palomino, GT, Metal-organic framework mixed-matrix disks: versatile supports for automated solid-phase extraction prior to chromatographic separation, Journal of Chromatography A, 1488 pp. 1-9. ISSN 0021-9673 (2017) [Refereed Article]

Copyright Statement

2017 Elsevier B.V. All rights reserved.

DOI: doi:10.1016/j.chroma.2017.01.069

Abstract

We present for the first time the application of metal-organic framework (MOF) mixed-matrix disks (MMD) for the automated flow-through solid-phase extraction (SPE) of environmental pollutants. Zirconium terephthalate UiO-66 and UiO-66-NH2 MOFs with different size (90, 200 and 300nm) have been incorporated into mechanically stable polyvinylidene difluoride (PVDF) disks. The performance of the MOF-MMDs for automated SPE of seven substituted phenols prior to HPLC analysis has been evaluated using the sequential injection analysis technique. MOF-MMDs enabled the simultaneous extraction of phenols with the concomitant size exclusion of molecules of larger size. The best extraction performance was obtained using a MOF-MMD containing 90nm UiO-66-NH2 crystals. Using the selected MOF-MMD, detection limits ranging from 0.1 to 0.2μgL−1 were obtained. Relative standard deviations ranged from 3.9 to 5.3% intra-day, and 4.75.7% inter-day. Membrane batch-to-batch reproducibility was from 5.2 to 6.4%. Three different groundwater samples were analyzed with the proposed method using MOF-MMDs, obtaining recoveries ranging from 90 to 98% for all tested analytes.

Item Details

Item Type:Refereed Article
Keywords:membranes, chromatography, metal-organic frameworks, mixed-matrix disks, solid-phase extraction, sequential injection analysis, high performance liquid chromatography, phenols
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Separation Science
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
UTAS Author:Maya, F (Mr Fernando Maya Alejandro)
ID Code:127832
Year Published:2017
Web of Science® Times Cited:28
Deposited By:Chemistry
Deposited On:2018-08-19
Last Modified:2018-09-07
Downloads:0

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