Application of dispersive liquid–liquid–solidified floating organic drop microextraction and ETAAS for the preconcentration and determination of indium
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- 作者：Elham Ashrafzadeh Afshar ; Mohammad Ali Taher…
- 关键词：Indium ; Dispersive liquid–liquid microextraction ; Solidified floating organic drop microextraction ; Electrothermal atomic absorption spectrometry
- 刊名：Analytical and Bioanalytical Chemistry
- 出版年：2017
- 出版时间：March 2017
- 年：2017
- 卷：409
- 期：7
- 页码：1837-1843
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Analytical Chemistry; Biochemistry, general; Laboratory Medicine; Characterization and Evaluation of Materials; Food Science; Monitoring/Environmental Analysis;
- 出版者：Springer Berlin Heidelberg
- ISSN：1618-2650
- 卷排序：409
文摘
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.