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Dithizone-modified nanoporous fructose as a novel sorbent for solid-phase extraction of ultra-trace levels of heavy metals |
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| Authors: | Mohammad Behbahani Mostafa Najafi Mostafa M Amini Omid Sadeghi Akbar Bagheri Mani Salarian |
| Institution: | 1. Department of Chemistry, Shahid Beheshti University, G.C., Tehran, 1983963113, Iran 2. Department of Chemistry, Faculty of Science, Imam Hossein University, Tehran, 16597, Iran 3. Department of Chemistry, Islamic Azad University, Shahr-e-Rey Branch, P.O.BOX. 18155–144, Tehran, Iran |
| Abstract: | We are introducing nanoporous fructose (np-F) modified with dithizone as a new solid-phase for extraction of heavy metals ions including cadmium(II), copper(II), nickel(II) and lead(II). Effects of pH value, flow rates, type, concentration and volume of the eluent, breakthrough volume, and of other ions were studied. Under optimized conditions, the extraction efficiency is >97 %, and the limits of detection are 0.025, 0.15, 0.5 and 1.2 ng mL?1 for the ions of cadmium, copper, nickel, and lead, respectively, and the adsorption capacities for these ions are 101, 81, 74 and 178 mg g?1. The modified np-F sorbent was characterized by thermogravimetric analysis, differential thermal analysis, transmission electron microscopy, Fourier transform infrared spectrometry, X-ray diffraction, and nitrogen adsorption surface area (BET) measurements. We are introducing nanoporous fructose (np-F) modified with dithizone as a new solid-phase for extraction of heavy metals ions including cadmium(II), copper(II), nickel(II) and lead(II). This SPE technique was successfully applied for separation, determination, and preconcentration of cadmium, copper, nickel and lead in biological, food and environmental water samples |
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