Fabrication of robust polyimide-coated solid phase microextraction fibers for efficient extraction of fifteen polycyclic aromatic hydrocarbons from environmental water.

ABSTRACT: A novel supporting material was developed by pulling melted glass onto stainless steel, providing a mechanically robust and chemically stable substrate. A polyimide-coated fiber for solid-phase microextraction (SPME) was then fabricated using a simple dipping method. The strong interactions between the polyimide coating and analytes, attributed to abundant unshared electron pairs in the p orbitals of O and N atoms, as well as π electrons in the C[double bond, length as m-dash]O bond and benzene ring, contributed to the high extraction efficiency for sixteen polycyclic aromatic hydrocarbons. The developed polyimide-coated fiber-based SPME method, coupled with gas chromatography-flame ionization detection, exhibited low limits of detection (0.11-1.23 μg L^-1) and a wide linear rang

SUBMITTER: Song A 

PROVIDER: S-EPMC12288714 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature