Application of dispersive liquid–liquid–solidified floating organic drop microextraction and ETAAS for the preconcentration and determination of indium
| Autor: | Elham Ashrafzadeh Afshar, Matin Naghizadeh, Hamid Fazelirad, Mohammad Ali Taher |
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| Rok vydání: | 2017 |
| Předmět: |
Detection limit
Chromatography Calibration curve Drop (liquid) 010401 analytical chemistry Analytical chemistry chemistry.chemical_element 010402 general chemistry 01 natural sciences Biochemistry 0104 chemical sciences Analytical Chemistry law.invention Solvent chemistry Linear range law Enrichment factor Atomic absorption spectroscopy Indium |
| Zdroj: | Analytical and Bioanalytical Chemistry. 409:1837-1843 |
| ISSN: | 1618-2650 1618-2642 |
| DOI: | 10.1007/s00216-016-0128-2 |
| Popis: | A new, simple and efficient method, including dispersive liquid–liquid–solidified floating organic drop microextraction and then electrothermal atomic absorption spectrometry, has been developed for the preconcentration and determination of ultratrace amounts of indium. The method was applied to preconcentrate the indium–1-(2-pyridylazo)-2-naphthol complex in 25 μL 1-undecanol. The various factors affecting the extraction efficiency, such as pH, type and volume of extraction solvent, type and volume of disperser solvent, sample volume, ionic strength, and ligand concentration, were investigated and optimized. Under the optimum conditions, an enrichment factor of 62.5, precision of ±4.75%, a detection limit of 55.6 ng L−1, and for the calibration graph a linear range of 96.0-3360 ng L−1 were obtained. The method was used for the extraction and determination of indium in water and standard samples with satisfactory results. |
| Databáze: | OpenAIRE |
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