A novel extraction method for three ochratoxins in human urine based on polystyrene/polyethersulfone electrospun nanofibers coated with copper nanoparticles.

ABSTRACT: In this study, four types of nanofibers were prepared via electrospinning and characterized through SEM, TEM, EDS, FTIR, TG, XPS and water contact angle analyses, and the novel polystyrene/polyethersulfone nanofibers coated with copper nanoparticles (PS/PES-CuNPs nanofibers) were developed as an ideal adsorbent for the extraction of three ochratoxins from human urine. The solid-phase extractant of sample pretreatment displayed preferable sensitivity and an extraction effect, and the analytical method based on the novel packed-fiber solid-phase extraction strategy followed by high performance liquid chromatography-fluorescence detection (PFSPE-HPLC-FLD) achieved an exceedingly low limit of detection (LOD) and limit of quantification (LOQ) of 0.108-0.162 μg L^-1 and 0.658-0.

SUBMITTER: Chu L 

PROVIDER: S-EPMC11367628 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature