Analytical Sciences

Abstract − Analytical Sciences, 33(9), 999 (2017).

Novel Uniform Fe3O4 Hollow Spheres for Magnetic Solid-phase Extraction of Polycyclic Aromatic Hydrocarbons
Jiangbo XI,* Juan ZHANG,* and Haiyan ZHAO**
*School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430073, China
**School of Pharmaceutical Sciences, South-central University for Nationalities, Wuhan 430074, China
A novel magnetic absorbent based on Fe3O4 hollow nanospheres was developed for polycyclic aromatic hydrocarbons (PAHs) extraction. Fe3O4 hollow nanospheres were prepared by a one-pot facile solvothermal method and its structural properties were characterized by scanning electron microscope (SEM) and analyzer transmission electron microscopy (TEM). It was the first time to use hollow nanospheres which possess high special surface area for magnetic solid-phase extraction (MSPE). The extraction condition of Fe3O4 hollow nanospheres and its performance for PAHs was systematically investigated. Besides, its extraction performance also compared with bare Fe3O4 nanoparticles. The results indicated the structure with hollow and spherical Fe3O4 perform better enrichment ability than that with solid and amorphous ones. The developed MSPE coupled with HPLC method shows good linearity (0.1 – 5 ng/mL) and low detection limits (2.5 – 10 pg/mL) for six PAHs. It also has been executed for the analysis of environmental samples, with recoveries in the range of 84.6 – 97.8%.