Preconcentration of some trace metal ions on coated alumina modified by 1-((6-(-(2-hydroxynaphthalen-1-yl)methyleneamino) hexylimino) methyl) naphthalen-2-ol |
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| Authors: | M Sheibani F Marahel M Montazerozohori M Soylak |
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| Institution: | 1. Department of Chemistry , Islamic Azad University , Omidiyeh Branch, Omidiyeh, Iran;2. Department of Chemistry , Yasouj University , Yasouj 75914-353, Iran;3. Department of Chemistry , University of Erciyes , 38039 Kayseri, Turkey;4. Department of Chemistry , King Saud University , Riyadh, Saudi Arabia |
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| Abstract: | A sensitive and efficient method for preconcentration of trace amounts of some metal ions such as Co2+, Ni2+, Cu2+, Zn2+, Pb2+, Cd2+, Cr3+, and Fe3+ ions based on modification of sodium-dodecyl-sulphate (SDS) coated alumina with 1-(6-(-(2-hydroxynaphthalen-1-yl) methyleneamino) hexylimino) methyl) naphthalen-2-ol (HNMAHN) is reported. The method is based on the uptake of these ions following their chelation with HNMAHN and their recovery using a suitable eluent. The influence of parameters such as pH, concentration of ligand and amount of coated alumina, SDS concentration, eluent (type and concentrations), and elution volume on metal ion recoveries are investigated. The preconcentration factor is 150 (10?mL elution volume) for a 1500?mL sample volume. The method has been successfully applied for extraction and determination of these ions content in some real samples. Extraction efficiency is generally >95% with low relative standard deviations between 1.8% and 2.4 %. |
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| Keywords: | 1-((6-(-(2-Hydroxynaphthalen-1-yl)methyleneamino)hexylimino)methyl) naphthalen-2-ol surfactant-coated alumina atomic absorption spectrometry solid phase extraction |
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