Magnetic covalent triazine-based frameworks as magnetic solid-phase extraction adsorbents for sensitive determination of perfluorinated compounds in environmental water samples

Abstract

Covalent organic frameworks (COFs), which are a new type of carbonaceous polymeric material, have attracted great interest because of their large surface area and high chemical and thermal stability. However, to the best of our knowledge, no work has reported the use of magnetic COFs as adsorbents for magnetic solid-phase extraction (MSPE) to enrich and determine environmental pollutants. This work aims to investigate the feasibility of using covalent triazine-based framework (CTF)/FeO composites as MSPE adsorbents to enrich and analyze perfluorinated compounds (PFCs) at trace levels in water samples. Under the optimal conditions, the method developed exhibited low limits of detection (0.62-1.39 ng·L), a wide linear range (5-4000 ng L), good repeatability (1.12-9.71%), and good reproducibility (2.45-7.74%). The new method was successfully used to determine PFCs in actual environmental water samples. MSPE based on CTF/FeO composites exhibits potential for analysis of PFCs at trace levels in environmental water samples. Graphical abstract Magnetic covalent triazine-based frameworks (CTFs) were used as magnetic solid-phase extraction adsorbents for the sensitive determination of perfluorinated compounds in environmental water samples. PFBA perfluorobutyric acid, PFBS perfluorobutane sulfonate, PFDA perfluorodecanoic acid, PFDoA perfluorododecanoic acid, PFHpA perfluoroheptanoic acid, PFHxA perfluorohexanoic acid, PFHxS perfluorohexane sulfonate, PFNA perfluorononanoic acid, PFOA perfluorooctanoic acid, PFPeA perfluoropentanoic acid, PFUdA Perfluoroundecanoic acid.

Fe(III)‐Functionalized Magnetic Covalent Organic Frameworks for Fast Adsorption and Removal of Phenylbutazone in Aqueous Solution

“…[45][46][47][48][49] Moreover, simple modification or functionalization are able to extend their widespread applicability. [50,51] However, the preparation of functionalized COF materials is very critical and complicated, [52][53][54] which hinders the development of the application of COF materials. Therefore, it is important to find ways to quickly synthesize functionalized COF materials.…”

Bare polyprolylene hollow fiber as extractive phase for in‐tube solid‐phase microextraction to determine estrogens in water samples

“…In order to eliminate matrix interference, enrich trace components and improve analytical sensitivity, the sample pretreatment of water samples is essential . Plenty of methods were developed and applied to water samples, such as solid‐phase extraction , liquid–liquid microextraction , soxhlet extraction , stir bar sorptive extraction and so on. However, there were abundant shortcomings like significant time‐, power‐consuming and organic solvent‐consumption in these techniques .…”

Nano‐MoO3 for highly selective enrichment of polycyclic aromatic hydrocarbons in in‐tube solid‐phase microextraction

“…In recent years, the miniaturization of sample preparation has become a trend of sample pretreatment . SPE, MSPE, and SPME are common sample preparation methods . Compared with others, SPME has obvious advantages like as high efficiency, low cost, easy operation, and environmental protection .…”

“…In recent years, the miniaturization of sample preparation has become a trend of sample pretreatment [1]. SPE, MSPE, and SPME are common sample preparation methods [2,3]. Compared with others, SPME has obvious advantages like as high Article Related Abbreviations: Ace, acenaphthene; Acy, acenaphthylene; Ant, anthracene; F E , enrichment factor; FlA, fluoranthene; FLD, fluorescence detector; Nap, naphthalene; nano-MoO 3 , nano-molybdenum trioxide; PAHs, polycyclic aromatic hydrocarbons; PEEK, polyetheretherketone; Phe, phenanthrene; Pyr, pyrene; SBSE, stir bar sorptive extraction.…”