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Facile Fabrication of Carbon Nanotube Hollow Microspheres as Coating Fiber for Ultrasensitive Solid-Phase Microextraction of Phthalate Acid Esters in Tea Beverages
Song, X.; Liu, Y.; He, F.; Wu, Y.; Wang, D.; Lv, H.; Wang, X.; Sun, Z.; Cheng, C.; Liao, K.; et al. Facile Fabrication of Carbon Nanotube Hollow Microspheres as Coating Fiber for Ultrasensitive Solid-Phase Microextraction of Phthalate Acid Esters in Tea Beverages. Analytical Methods 2023, doi:10.1039/d3ay01943h.
Song, X.; Liu, Y.; He, F.; Wu, Y.; Wang, D.; Lv, H.; Wang, X.; Sun, Z.; Cheng, C.; Liao, K.; et al. Facile Fabrication of Carbon Nanotube Hollow Microspheres as Coating Fiber for Ultrasensitive Solid-Phase Microextraction of Phthalate Acid Esters in Tea Beverages. Analytical Methods 2023, doi:10.1039/d3ay01943h.
Song, X.; Liu, Y.; He, F.; Wu, Y.; Wang, D.; Lv, H.; Wang, X.; Sun, Z.; Cheng, C.; Liao, K.; et al. Facile Fabrication of Carbon Nanotube Hollow Microspheres as Coating Fiber for Ultrasensitive Solid-Phase Microextraction of Phthalate Acid Esters in Tea Beverages. Analytical Methods 2023, doi:10.1039/d3ay01943h.
Song, X.; Liu, Y.; He, F.; Wu, Y.; Wang, D.; Lv, H.; Wang, X.; Sun, Z.; Cheng, C.; Liao, K.; et al. Facile Fabrication of Carbon Nanotube Hollow Microspheres as Coating Fiber for Ultrasensitive Solid-Phase Microextraction of Phthalate Acid Esters in Tea Beverages. Analytical Methods 2023, doi:10.1039/d3ay01943h.
Abstract
The efficient extraction of phthalate acid esters (PAEs) is challenging due to their extremely low concentration, complicated matrices and hydrophilicity. Herein, hol-low microspheres, as an ideal coating, possesses significant potential for solid-phase microextraction (SPME) due to their fascinating properties. In this study, multi-walled carbon nanotubes hollow microspheres (MWCNTs-HMs) were utilized as a fiber coating for the SPME of PAEs from tea beverages. MWCNTs-HMs were ob-tained by dissolving the polystyrene (PS) cores with organic solvents. Interestingly, MWCNTs-HMs well maintain the morphology of the precursors MWCNTs@PS. The layer-by-layer (LBL) assembly of MWCNTs on PS microsphere templates was ac-quired through electrostatic interactions. Six PAEs, di-ethyl phthalate (DEP), di-iso-butyl phthalate (DIBP), di-n-butyl phthalate (DBP), benzyl butyl phthalate (BBP), di-2-ethylhexyl phthalate (DEHP) and di-n-octyl phthalate (DOP), were se-lected as target analytes for assessing the efficiency of the coating for SPME. The stirring rate, sample solution pH and extraction time were optimized by using the Box-Behnken design. Under optimal working conditions, the proposed MWCNTs-HMs/SPME was coupled with gas chromatography-tandem mass spec-trometry (GC-MS/MS) to achieve high enrichment factors (118–2137), wide linearity (0.0004-10 μg L-1), low limits of detection (0.00011-0.0026 μg L-1) and acceptable recovery (80.2%-108.5%) for the detection of PAEs. Therefore, the MWCNTs-HMs coated fibers are promising alternatives in the SPME method for the sensitive detec-tion of PAEs at trace levels in tea beverages.
Keywords
solid-phase microextraction; phthalate acid esters; gas chromatography-tandem mass spectrometry; carbon nanotubes hollow microspheres
Subject
Chemistry and Materials Science, Analytical Chemistry
Copyright:
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