A novel method for the simple and simultaneous preconcentration of Pb2+, Cu2+ and Zn2+ ions with aid of diethylenetriamine functionalized SBA-15 nanoporous silica compound |
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| Authors: | L Hajiaghababaei A Badiei M Shojaan MR Ganjali GM Ziarani P Zarabadi-Poor |
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| Institution: | 1. Department of Chemistry , Faculty of Science, Islamic Azad University, Shahre Rey Branch , Km 5, Tehran- Ghome freeway, Tehran , Iran lhajiaghababaei@yahoo.com;3. Center of Excellence in Electrochemistry, School of Chemistry , College of Science, University of Tehran , Tehran , Iran;4. Department of Chemistry , Faculty of Science, Islamic Azad University, Shahre Rey Branch , Km 5, Tehran- Ghome freeway, Tehran , Iran;5. Department of Chemistry , Alzahra University , Tehran , Iran |
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| Abstract: | A rapid method for the extraction and monitoring of nanogram level of Pb2+, Cu2+ and Zn2+ ions using uniform silanized mesopor (SBA-15) functionalized with diethylenetriamine groups and flame atomic absorption spectrometry (FAAS) is presented. The preconcentration factor of the method is 100 and detection limit of the technique is 5.5?ng?mL?1 and 1.4?ng?mL?1 and 0.1?ng?mL?1 for Pb2+, Cu2+ and Zn2+ respectively. The time and the optimum amount of the sorbent, pH and minimum amount of acid for stripping of ions from functionalized SBA-15 were tested. The maximum capacity the functionalized SBA-15 was found to be 183.0 (±1.9) µg, 156.0 (±1.5) µg and 80.0 (±1.6) µg of Pb2+, Cu2+ and Zn2+/mg functionalized SBA-15, respectively. |
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| Keywords: | preconcentration Pb2+ Cu2+ and Zn2+ ions flame atomic absorption spectrometry diethylenetriamine functionalized SBA-15 |
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