Cloud point extraction procedure for preconcentration and determination of lead(II) ions using triton X-100 at room temperature
| Autor: | Mersiha Suljkanović, Nusreta Hasić, Selmina Hodzic, Jasmin Suljagić |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Acta Periodica Technologica, Vol 2019, Iss 50, Pp 286-294 (2019) |
| ISSN: | 2406-095X 1450-7188 |
| DOI: | 10.2298/apt1950286s |
| Popis: | A Cloud point extraction (CPE) procedure was presented for preconcentration of lead(II) ions, after complexation by 18-crown-6 (18C6) and extraction with Triton X-100 at proposed experimental conditions. After separation of surfactant - rich phase, content of Pb(II) ions in remaining solution was measured by Flame Atomic Absorption Spectrometry (FAAS). The experimental conditions such as pH, temperature, concentration of Triton X-100, concentration of 18C6, incubation time, type and concentration of added electrolyte, were evaluated. Results showed that among investigated electrolytes (NaCl, Na2SO4 and Na2CO3) the amount of 0.9 mol/L Na2CO3 lowers cloud point temperature of Triton X-100 to 22?C (room temperature during the experiment), thus simplifying the extraction procedure. After an incubation time of 5 minutes and using the concentration of 1.2?10-3 mol/L Triton X-100 and 1.5?10-4 mol/L 18C6 (1:1 stoichiometric ratio for 18C6:Pb), 60% of lead (II) ions were efficiently removed from investigated solution. |
| Databáze: | OpenAIRE |
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