In situ growth of metal-organic framework HKUST-1 in an organic polymer as sorbent for nitrated and oxygenated polycycli
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ORIGINAL PAPER
In situ growth of metal-organic framework HKUST-1 in an organic polymer as sorbent for nitrated and oxygenated polycyclic aromatic hydrocarbon in environmental water samples prior to quantitation by HPLC-UV Héctor Martínez-Pérez-Cejuela 1 & María Guiñez 2,3 & Ernesto F. Simó-Alfonso 1 Jamal El Haskouri 4 & José M. Herrero-Martínez 1
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Pedro Amorós 4
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Received: 20 December 2019 / Accepted: 9 April 2020 # Springer-Verlag GmbH Austria, part of Springer Nature 2020
Abstract An in situ preparation of metal-organic framework (HKUST-1) on the surface of an organic polymer is reported. The hybrid material was evaluated as sorbent for solid-phase extraction (SPE) of oxygenated and nitrated polycyclic aromatic hydrocarbons (PAHs). The growth of HKUST-1 on MAA-based polymer was accomplished using a layer-by-layer assembly strategy. The HKUST-1-polymer was characterized using powder X-ray diffraction and scanning electron microscopy to demonstrate the incorporation of MOF crystals onto the polymer surface. The MOF (nano)crystals were characterized using high-resolution transmission electron microscopy and high-angle annular-dark-field scanning transmission electron microscopy. The waterstable MOF-polymer was evaluated as SPE sorbent, and several variables that can influence the extraction recoveries of PAH derivatives were investigated. Under the selected conditions, the detection limits varied between 4 and 21 ng·L−1, and the precision (relative standard deviation) was below 12%. The recovery values for spiked solutions ranged from 95 to 104%, and the enrichment factor achieved was close to 1000-fold using a high sample volume (100 mL) and very low desorption volume (100 μL). The SPE enrichment combined with HPLC and DAD detector was successfully applied to the extraction and determination of polycyclic hydrocarbons in environmental water samples. Keywords PAH derivatives . Hybrid metal-organic framework-polymer . Nanoscale characterization . STEM-HAADF . π-Interaction . Solid-phase extraction . Preconcentration
Introduction Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00604-020-04265-z) contains supplementary material, which is available to authorized users. * José M. Herrero-Martínez [email protected] 1
Department of Analytical Chemistry, University of Valencia, C/Dr. Moliner, 50, 46100 Burjassot, Valencia, Spain
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Instituto de Química de San Luis (CCT-San Luis), Área de Química Analítica, Facultad de Química Bioquímica y Farmacia, Universidad Nacional de San Luis, Laboratorio de Espectrometría de Masas, Bloque III, Ejército de los Andes 950, CP5700 San Luis, Argentina
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Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290 CP, C1425FQB Buenos Aires, Argentina
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Institute of Material Science (ICMUV), University of Valencia, Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain
Metal-organic frameworks (MOFs) are a class of ordered porous materials built of chains of metal ions or inorganic clusters coordinated
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