A triazine based organic framework with micropores and mesopores for use in headspace solid phase microextraction of phthalate esters
- 328 Downloads
A dual-pore covalent organic framework (COF) that contains micropores and mesopores was prepared from 2,4,6-triphenoxy-1,3,5-triazine (TPT). A building block is used in which double linking sites were introduced at each branch of a C3-symmetric skeleton. The COF is shown to be a viable coating for fibers for solid-phase microextraction of phthalic acid esters (PAEs). Its high specific surface, high hydrophobicity, and wide pore size distribution of a TPT-COF coated fiber result in extraordinarily powerful extraction of PAEs. The enrichment factor is up to 7790 under optimum conditions. The method has detection limits that range between 5 and 95 ng L−1. The inter-batch relative standard deviations are between 3.1 and 10.9%, and those for intra-batch assays are from 0.8 to 4.7%. The TPT-COF coated fibers were applied to the extraction of PAEs from (spiked) juice samples, and satisfactory recoveries were achieved.
KeywordsCovalent organic framework Multiple-linking-site SPME Gas chromatography
The project was supported by Open Project of State Key Laboratory of Supramolecular Structure and Materials, Jilin University, China (sklssm201815).
Compliance with ethical standards
The author(s) declare that they have no competing interests.
- 2.Barp L, Purcaro G, Franchina F, Zoccali M, Sciarrone D, Tranchida P, Mondello L (2015) Determination of phthalate esters in vegetable oils using direct immersion solid-phase microextraction and fast gas chromatography coupled with triple quadrupole mass spectrometry. Anal Chim Acta 887:237–244CrossRefGoogle Scholar
- 3.Amiri A, Ghaemi F (2017) Microextraction in packed syringe by using a three-dimensional carbon nanotube/carbon nanofiber–graphene nanostructure coupled to dispersive liquid-liquid microextraction for the determination of phthalate esters in water samples. Microchim Acta 184:3851–3858CrossRefGoogle Scholar
- 6.Hou X, Guo Y, Liang X, Wang X, Wang L, Wang L, Liu X (2016) Bis(trifluoromethanesulfonyl)imide-based ionic liquids grafted on graphene oxide-coated solid-phase microextraction fiber for extraction and enrichment of polycyclic aromatic hydrocarbons in potatoes and phthalate esters in food-wrap. Talanta 153:392–400CrossRefGoogle Scholar
- 9.Amanzadeh H, Yamini Y, Moradi M, Asl YA (2016) Determination of phthalate esters in drinking water and edible vegetable oil samples by headspace solid phase microextraction using graphene/polyvinylchloride nanocomposite coated fiber coupled to gas chromatography-flame ionization detector. J Chromatogr A 1465:38–46CrossRefGoogle Scholar