magnetic dispersive solid phase extraction of some polycyclic aromatic hydrocarbons from honey samples using iron (iii) oxinate nanocomposite as an efficient sorbent

Honey is a natural food product that is widely used by human for various purposes. this biologically active product contains important compounds such as minerals, vitamins, sugars, enzymes, proteins, antioxidants, and organic acids. therefore, it has high nutritional and therapeutic properties [1–2]. in this work, iron (iii) oxinate magnetic nanocomposite was synthesized and employed as an efficient sorbent for magnetic dispersive solid phase extraction of some polycyclic aromatic hydrocarbons from honey samples. further preconcentration of the analytes was accomplished using dispersive liquid-liquid microextraction. the prepared sorbent was characterized using fourier transform infrared spectrophotometer, x–ray diffractometer, vibrating sample magnetometer, energy dispersive x–ray, and scanning electron microscope. these analyses verified the successful formation of the magnetic sorbent. in the extraction process, briefly, the sorbent was added into an aqueous solution containing the analytes and vortexed well. after completing the adsorption process, the supernatant phase was separated in the presence of a magnet and the analytes loaded on the adsorbent were eluted by acetonitrile. then, µl–level of 1,1,1–trichloroethane was mixed with the obtained acetonitrile phase and injected into nacl solution. one microliter of the sedimented phase after centrifugation was injected into gas chromatograph–flame ionization detector. under the best extraction conditions, a great repeatability (relative standard deviation equal or less than 5 and 6% for intra– and inter day precisions, respectively), acceptable extraction recoveries (59–84%), high enrichment factors (118–168), and low limits of detection and quantification (0.16–0.36 and 0.56–1.22 ng g−1, respectively) were acquired.