Ionic liquid-linked dual magnetic microextraction of lead(II) from environmental samples prior to its micro-sampling flame atomic absorption spectrometric determination

• Published in: Talanta (Oxford) Vol. 116; pp. 882 - 886
• Main Authors: Yilmaz, Erkan, Soylak, Mustafa
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 15.11.2013
• Subjects: Adult; Ammonium pyrrolidinedithiocarbamate; Atomic absorption analysis; Child; Coordination Complexes - chemistry; Environmental Pollutants - isolation & purification; Factor Analysis, Statistical; Fe3O4 magnetic nanoparticles; Ferrosoferric Oxide - chemistry; Fluid flow; Fresh Water - chemistry; Hair - chemistry; Humans; Imidazoles - chemistry; Ionic liquid; Ionic liquid-linked dual magnetic microextraction; Ionic Liquids - chemistry; Lead; Lead (metal); Lead - isolation & purification; Limit of Detection; Liquid Phase Microextraction; Liquid-liquid extraction; Magnetite Nanoparticles - chemistry; Male; Nanoparticles; Optimization; Pyrrolidines - chemistry; Reference Standards; Reproducibility; Reproducibility of Results; Solid Phase Microextraction; Spectrophotometry, Atomic; Thiocarbamates - chemistry; Vegetables - chemistry; Vortices; Fe3O4 magnetic nanoparticles; Lead; Ionic liquid-linked dual magnetic microextraction; Ammonium pyrrolidinedithiocarbamate; Ionic liquid; FeO magnetic nanoparticles
• ISSN: 0039-9140; 1873-3573
• DOI: 10.1016/j.talanta.2013.08.002

A novel and rapid microextraction approach termed as ionic liquid-linked dual magnetic microextraction (IL-DMME), was developed for the atomic absorption spectrometric determination of lead. The developed method based on a combination of dispersive liquid–liquid microextraction (DLLME) and dispersive micro solid-phase extraction (D-μ-SPE). In the first DLLME step, 1-butyl-3-methylimidazolium hexafluorophosphate [C4mim][PF6], was selected to extract the lead-pyrrolidine-dithiocarbamate (Pb-PDC) complex from sample solution by the assistance of vortex agitator. After the first step, fifty milligrams of Fe3O4 magnetic nanoparticles (MNPs) were added to extraction of the ionic liquid and Pb-PDC complex in aqueous solution. The effective factors in proposed IL-DMME procedure, including volume of 1-butyl-3-methylimidazolium hexafluorophosphate, amount of Fe3O4 magnetic nanoparticles, vortex time, amount of ammonium pyrrolidinedithiocarbamate, sample volume and matrix effect were optimized in details. Under the optimal conditions, the method present has low detection limit (0.57μgL−1), high preconcentration factor (160) and good repeatability (<7.5%, n=10). The accuracy of the developed method was evaluated by the analysis of the certified reference materials and addition-recovery tests. The method was successfully applied to the determination of lead in water, plant and hair samples. •A new ionic liquid-linked dual magnetic microextraction was developed.•The analytical parameters were optimized.•The accuracy was evaluated by the analysis of the certified reference materials•The method was applied to the determination of lead in water, food and hair samples.