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Keywords
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Nano-hybrid, Magnetite, Polystyrene, Magnetic solid phase extraction, Methyl violet 10B
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Abstract
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In this research, the magnetite polystyrene maleic anhydride (MPSMA) was synthesized, and its structure and morphology were
characterized by X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy techniques. The obtained
nano-structured inorganic material was employed as a novel magnetic nanosorbent for separation and pre-concentration of Methyl violet
(10B) dye from aqueous solutions, which can be spectrophotometrically monitored at λ = 585 nm after pre -concentration by solid phase
extraction (SPE). The effect of several parameters including pH of the sample solution, amount of the sorbent, extraction and desorption
times, and elution conditions and sample volume were investigated and optimized. UV-Vis spectrophotometer was used for determination
of MV (10B) concentration after desorption of the dye by nitric acid solution. Under the optimum experimental conditions, the limit of
detection and the relative standard deviation were 0.08 μg l-1 and 1.10%, respectively. The enrichment factor of 200 was achieved, and the
calibration graph using the presented solid phase extraction system was linear in the range of 0.3-1500 μg l-1 with a correlation coefficient
of 0.9989. The method was successfully applied for pre-concentration of MV (10B) from several textile waste water effluents.
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