Novel solid‐phase microextraction fiber coatings: A review

Abstract

The materials used for the fabrication of solid-phase microextraction fiber coatings in the past five years are summarized in the current review, including carbon, metal-organic frameworks, covalent organic frameworks, aerogel, polymer, ionic liquids/poly (ionic liquids), metal oxides, and natural materials. The preparation approaches of different coatings, such as sol-gel technique, in-situ growth, electrodeposition, and glue methods, are briefly reviewed together with the evolution of the supporting substrates. In addition, the limitations of the current coatings and the future development directions of solid-phase microextraction are presented.

A rapid and green GC-MS method for the sampling of volatile organic compounds in spices and flowers by concurrent headspace single-drop microextraction and solid-phase microextraction

“…13 The selectivity and sensitivity of SPME bers have a direct bearing on the materials coated on bers. 14 Newer materials used for ber coatings include porous polydivinylbenzene microspheres, 15 metal-organic frameworks and covalent organic frameworks, 16 The HS-SPME sampling of materials of low volatility was meticulously solved by a gas-cycle-assisted system that is designed to enhance the evaporation rates of analytes from their matrix. 17 Single-drop microextraction (SDME) makes use of a single drop suspended at the needle tip placed either immersed in the sample solution or in its headspace.…”

Immobilization of zeolitic imidazolate framework‐90 onto modified stainless steel wire via covalent bonding for solid‐phase microextraction of biomarkers in exhalation of lung cancer patients

“…Hence, the sorbent plays a key role in determining the extraction efficiency and selectivity of SPME. Although many commercial and self‐made coatings have been broadly applied in SPME [13−16], the firmness of the coatings on the fiber is still a significant challenge due to the lack of strong force between the coatings and the fiber. Among the developed coating preparation methods, the physical preparation methods are often considered to have a lack of strong force between the coating and the fiber, resulting in coatings falling off from the fiber during thermal desorption and solvent desorption.…”

H‐Bonded Supramolecular Crystals‐Coated Solid‐Phase Microextraction enables the Matrix Interference‐Free Detection of the COVID‐19 Antiviral Drugs

“…[ 27 ] Porous frame materials feature great potential as SPME coating material because of large specific surface area, low density, easy functionalization, and modification. [ 28 ] Among them, hydrogen‐bonded organic frameworks (HOFs) are a novel and promising class of porous frame materials. HOFs are self‐assembled from organic monomers with electron donors and acceptors by intermolecular hydrogen‐bonding interactions.…”