In situ solvent formation microextraction based on a new ionic liquid for green preconcentration of trace amount of Cu (II) ions in water samples |
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Authors: | Fariborz Abbasi-Daronjoughi Homayon Ahmad Panahi |
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Affiliation: | Department of Chemistry, Central Tehran Branch, Islamic Azad University, Tehran, Iran |
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Abstract: | A simple, fast, and effective analytical technique known as in situ solvent formation microextraction was used to preconcentrate/separate trace amounts of Cu(II) ions in water samples prior to determination by flame atomic absorption spectroscopy. In the present method, 6,6′-(1Z,1′Z)(butane-1,4-diylbis(azan-1-yl-1-ylidene)bis(methan-1-yl-1-ylidene)bis-3-bromophenol (Schiff base ligand) as the complexing agent and 1-methyl-3-pentylimidazolium bromide (ionic liquid) as an extracting agent were successfully synthesized and characterized by FTIR, C-NMR, and H-NMR spectroscopies. The effects of several analytical parameters on the method were studied and optimized, and the merits of the method, such as LDR (0.2–1000 µg L?1), LOD (0.12 µg L?1), RSD (4.1%), and preconcentration factor (70) were evaluated. |
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Keywords: | Copper(II) ionic liquids in situ solvent formation microextraction Schiff base ligand |
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