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Anal Chim Acta

Title:		"Green solid-phase microextraction fiber coating based on the metal-organic framework CIM-80(Al): Analytical performance evaluation in direct immersion and headspace using gas chromatography and mass spectrometry for the analysis of water, urine and brewed coffee"
Author(s):		Pacheco-Fernandez I; Rentero M; Ayala JH; Pasan J; Pino V;
Address:		"Laboratorio de Materiales para Analisis Quimico (MAT4LL), Departamento de Quimica, Unidad Departamental de Quimica Analitica, Universidad de La Laguna (ULL), Tenerife, 38206, Spain; Instituto Universitario de Enfermedades Tropicales y Salud Publica de Canarias, Universidad de La Laguna (ULL), Tenerife, 38206, Spain. Electronic address: ipacheco@ull.edu.es. Laboratorio de Materiales para Analisis Quimico (MAT4LL), Departamento de Fisica, Universidad de La Laguna (ULL), La Laguna, Tenerife, 38206, Spain. Electronic address: renterogarciamanuel@gmail.com. Laboratorio de Materiales para Analisis Quimico (MAT4LL), Departamento de Quimica, Unidad Departamental de Quimica Analitica, Universidad de La Laguna (ULL), Tenerife, 38206, Spain. Electronic address: jayala@ull.edu.es. Laboratorio de Materiales para Analisis Quimico (MAT4LL), Departamento de Fisica, Universidad de La Laguna (ULL), La Laguna, Tenerife, 38206, Spain. Electronic address: jpasang@ull.edu.es. Laboratorio de Materiales para Analisis Quimico (MAT4LL), Departamento de Quimica, Unidad Departamental de Quimica Analitica, Universidad de La Laguna (ULL), Tenerife, 38206, Spain; Instituto Universitario de Enfermedades Tropicales y Salud Publica de Canarias, Universidad de La Laguna (ULL), Tenerife, 38206, Spain. Electronic address: veropino@ull.edu.es"
Journal Title:		Anal Chim Acta
Year:		2020
Volume:		20200812
Issue:
Page Number:		137 - 149
DOI:		10.1016/j.aca.2020.08.009
ISSN/ISBN:		1873-4324 (Electronic) 0003-2670 (Linking)
Abstract:		"A new solid-phase microextraction (SPME) fiber coating was prepared by the immobilization of the metal-organic framework (MOF) CIM-80(Al) on nitinol wires by a green in situ growth approach, using an aqueous synthetic approach, and without the need of any additional material to ensure the attachment of the MOF to the nitinol support. The coating was used for the development of headspace (HS) and direct immersion (DI) SPME methods in combination with gas chromatography and mass spectrometry (GC-MS) for the determination of polycyclic aromatic hydrocarbons (PAHs) as model compounds. Both methods were optimized and validated using the MOF-based fiber together with the commercial polydimethylsiloxane (PDMS) fiber. The MOF extraction phase exhibited superior analytical performance for most of the PAHs in HS-SPME mode (and particularly for less volatiles), while the PDMS fiber presented better results in the DI-SPME method. The analytical performance of the MOF sorbent coating in HS- and DI-SPME methods was also evaluated in urine and brewed coffee samples, without requiring any pretreatment step apart from dilution for DI-SPME experiments, thus showing suitability of the novel coatings for the analysis of complex samples. The proposed CIM-80(Al) fiber was efficient and biocompatible (for using a low cytotoxic sorbent and a biocompatible core support), and it also demonstrated stability and robustness, with inter-fiber (and inter-day) relative standard deviation values lower than 19%, and reusability for more than 80 extraction cycles using 280 degrees C as desorption temperature"
Keywords:		"Coffee Gas Chromatography-Mass Spectrometry Immersion *Metal-Organic Frameworks *Polycyclic Aromatic Hydrocarbons/analysis *Solid Phase Microextraction Urine Water *Water Pollutants, Chemical/analysis Gas chromatography Metal-organic frameworks Polycyclic;"
Notes:		"MedlinePacheco-Fernandez, Idaira Rentero, Manuel Ayala, Juan H Pasan, Jorge Pino, Veronica eng Netherlands 2020/10/01 Anal Chim Acta. 2020 Oct 9; 1133:137-149. doi: 10.1016/j.aca.2020.08.009. Epub 2020 Aug 12"