Solid-phase extraction of Cu, Zn, and Mn from Nile river and tap water prior to flame atomic absorption determination
| Autor: | S.M. Attaf, S.M. Abdel Azeem, M.F. El Shahat |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
021110 strategic
defence & security studies Chemistry Metal ions in aqueous solution Extraction (chemistry) 0211 other engineering and technologies Analytical chemistry Ocean Engineering Sorption 02 engineering and technology 010501 environmental sciences 01 natural sciences Pollution law.invention Tap water law Desorption Freundlich equation Solid phase extraction Atomic absorption spectroscopy 0105 earth and related environmental sciences Water Science and Technology |
| Zdroj: | Desalination and Water Treatment. 57:21893-21903 |
| ISSN: | 1944-3986 1944-3994 |
| DOI: | 10.1080/19443994.2015.1129507 |
| Popis: | In this study, we preconcentrated Cu, Zn, and Mn from Nile river and tap water at Cairo City (Egypt) by solid-phase extraction prior to flame AAS determination. Diacetylmonoxime functionalized silica gel (DMO-SG) was used as sorbent for preconcentration/separation of metal ions. Best sorption was achieved at sample pH 6 and flow rate of 2 mL min−1. Desorption was affected by a 0.3 mol L−1 of hydrochloric acid solution. Sorption kinetic and isotherm were found to follow the pseudo-second-order and Freundlich isotherm models, respectively. The capacity was 422, 533, and 346 μg g−1 for Cu, Zn, and Mn, respectively. The limit of detection (3σ) was 0.10, 0.11, and 0.12 μg L−1 and preconcentration factor was 100, 105, and 50, respectively. The recovery ranged between 92 and 102% and RSD % varied from 2.6 to 7.4%. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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