| dc.description.abstract | Cadmium (Cd) is a very toxic and carcinogenic heavy metal even at low levels
and it is naturally present in water as well as in food. Methods: A new polyvinyl benzyl xanthate
(PvbXa) was synthesized and used as a new adsorbent in this work. It contains pendant sulfide
groups on the main polystyryl chain. Using this new adsorbent, PvbXa, a vortex-assisted dispersive
solid-phase microextraction (VA-dSP E) procedure was developed for the determination of cadmium
from food and water samples via flame atomic absorption spectrophotometry (FAAS). Synthesized
PvbXa was characterized by 1H Nuclear magnetic resonance (NMR) Spectroscopy, Fourier Transform
Infrared Spectroscopy (FTIR), and X-ray Photoelectron Spectroscopy (XPS). The different parameters
of pH, sample volume, mixing type and time, sorbent amount, and eluent time were optimized using
standard analytical methods. Results: The optimized method for assessment of Cd in food and
water samples shows good reliability. The optimum conditions were found to be a 0.20–150 g L�����1
linear range, 0.06 g L�����1 LOD, 0.20 g L�����1 LOQ, 4.3 RSD %, and a preconcentration factor of 160.
Conclusions: The statistically experimental variables were utilized using a central composite design
(CCD). The present method is a low-cost, simple, sensitive, and very effective tool for the recovery
of Cd. | tr |
