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Abolhasani, J., Amjadi, M., Ghorbani Kalhor, E.. (1392). Ultra-Trace Determination of Copper and Silver in Environmental Samples by Using Ionic Liquid-Based Single Drop Microextraction-Electrothermal Atomic Absorption Spectrometry. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 3(3), -. doi: 10.22034/jchr.2018.544036
J. Abolhasani; M. Amjadi; E. Ghorbani Kalhor. "Ultra-Trace Determination of Copper and Silver in Environmental Samples by Using Ionic Liquid-Based Single Drop Microextraction-Electrothermal Atomic Absorption Spectrometry". نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 3, 3, 1392, -. doi: 10.22034/jchr.2018.544036
Abolhasani, J., Amjadi, M., Ghorbani Kalhor, E.. (1392). 'Ultra-Trace Determination of Copper and Silver in Environmental Samples by Using Ionic Liquid-Based Single Drop Microextraction-Electrothermal Atomic Absorption Spectrometry', نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 3(3), pp. -. doi: 10.22034/jchr.2018.544036
Abolhasani, J., Amjadi, M., Ghorbani Kalhor, E.. Ultra-Trace Determination of Copper and Silver in Environmental Samples by Using Ionic Liquid-Based Single Drop Microextraction-Electrothermal Atomic Absorption Spectrometry. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 1392; 3(3): -. doi: 10.22034/jchr.2018.544036

Ultra-Trace Determination of Copper and Silver in Environmental Samples by Using Ionic Liquid-Based Single Drop Microextraction-Electrothermal Atomic Absorption Spectrometry

Journal of Chemical Health Risks
مقاله 4، دوره 3، شماره 3، آذر 2013    اصل مقاله (384.06 K)
شناسه دیجیتال (DOI): 10.22034/jchr.2018.544036
نویسندگان
J. Abolhasani* 1؛ M. Amjadi2؛ E. Ghorbani Kalhor1
1Department of Chemistry, Faculty of Science, Tabriz Branch, Islamic Azad University, Tabriz, Iran
2Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
چکیده
A sensitive, selective and effective ionic liquid-based single drop microextraction technique wasdeveloped by using ionic liquid, 1-hexyl-3-methylimidazolium hexafluorophosphate, C6MIMPF6, coupledwith electrothermal atomic absorption spectrometry (ETAAS) for the determination of copper and silver inenvironmental samples. Dithizone was used as chelating agent. Several factors that influence themicroextraction efficiency and ETAAS signal, such as pH, dithizone concentration, extraction time, amounts ofionic liquid, stirring rate, pyrolysis and atomization temperature were investigated and the microextractionconditions were established. In the optimum experimental conditions, the detection limits (3 s) of the methodwere 4 and 8 ng L-1 and corresponding relative standard deviations (0.1 μg L-1, n = 6) were 4.2% and 4.8% forAg and Cu, respectively. The developed method was validated by analysis of a certified reference material andapplied to the determination of silver and copper.
کلیدواژه‌ها
Ionic liquids؛ Single-drop microextraction؛ Electrothermal atomic absorption spectrometry؛ Silver؛ Copper؛ Preconcentration
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