Introduction of a biowaste/graphene oxide nanocomposite as a coating for a metal alloy based SPME fiber: Application to screening of polycyclic aromatic hydrocarbons

Preparation of a new coating of graphene oxide/nickel complex on a nickelized metal surface for direct immersion solid phase microextraction of some polycyclic aromatic hydrocarbons

“…Given all the obtained results, the good extraction capacity of the fiber is probably due to the surface high porosities, high surface area, weak π–π interaction between the C-bonds of PAHs and GO surface, H-π interaction between the ‒OH or ‒COOH groups of GO (hydrogen donor) and PAHs (hydrogen bond acceptor), and the interaction between the oxygen-containing functional groups of GO (n-electron donor) and the analytes (π-electron acceptor) [ 24 ]. The interaction between the nitrogen groups of the Ni-complex with PAHs can also create adsorption prpoperties.…”

“…For example, numerous fibers based on the flexible metal wire substrates have been fabricated that can be employed with greater convenience because of their different physicochemical properties [ 21 , 22 ]. Aluchrom metal alloy (Alu), as a new substrate for the SPME fiber, has just recently been introduced in our articles [ 23 , 24 ]. In these works, Alu wires were applied once without any special pretreatment and coating material and once with a new coating of a pristine biomaterial and displayed high extraction and preconcentration efficiency in both cases.…”

Preparation of a New Sol-Gel Molecularly Imprinted Polymer with Isatin Template for an On-Line SolidPhase Extraction of HMF from Fruit Juice Samples

“…This step is usually the most time-consuming part of an analytical analysis and can significantly affect the obtained data [2]. Liquidliquid extraction (LLE), solid-phase extraction (SPE), and solidphase microextraction (SPME) are some of the most popular sample preparation methods [3]. SPE, that also called liquid-solid extraction, is a technique used for clean-up, trace enrichment, extraction, isolation, and separation of different analytes from liquid matrixes.…”

Introduction of a Zn-based metal–organic framework @ biomass porous activated carbon as a high-sensitive coating for a stainless steel SPME fiber: application to the simultaneous analysis of nonsteroidal anti-inflammatory drugs

“…In SPME, the analytes are adsorbed from the liquid or gaseous samples onto a solid/polymeric-coated fused silica fiber [ 2 ]. The SPME potential and its main advantages (simplicity, low price, compatibility with different analytical systems, automation, and solvent-free extraction) cause special attention to applying it in micro-pollutants analysis [ 3 ]. Despite the mentioned benefits, this method possesses some weaknesses, including fragility, bending of the fiber needle, limited numbers of commercially available sorbents, thermal instability, swelling and stripping of coating materials, and low extraction capability [ 4 ].…”