Carbon nanofibers decorated with magnetic nanoparticles as a new sorbent for the magnetic solid phase extraction of selected polycyclic aromatic hydrocarbons from water samples

摘要: A novel nano-adsorbent, magnetic carbon nanofibers (CNFs–Fe3O4), was prepared by impregnating Fe3O4 nanoparticles onto the surfaces of based on electrostatic interactions. The resulting were used as an adsorbent for solid phase extraction polycyclic aromatic hydrocarbons from environmental water samples. experimental parameters affecting efficiency, including amount sorbent, desorption conditions, time and salt concentration, investigated optimized. Under optimal detection limits method (S/N = 3) in range 0.008–0.03 ng mL−1 quantification 10) between 0.025 0.08 mL−1. repeatability assessed through five consecutive extractions independently compound solutions at concentrations 0.1, 10, 100 observed ranged 3.2% 11.2%, depending considered compounds. developed successfully applied to real samples while relative recovery percentages obtained spiked three level (0.1, 10 mL−1) 90.1% 100.9%.