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A b s t r a c t

In this study, a simple, sensitive and accurate method was developed for the determination of lead ion by combining ionic liquid dispersive liquid-liquid extraction (il-dlle) with flame atomic absorption spectrometry. Tetraethylthiuram disulfide (tetd), acetone and 1-octyl-3-methylimidazolium hexafluorophosphate [(C8mim) (PF6)] were used as the chelating agent, dispersive and extraction solvent, respectively. Under the optimal conditions, the calibration graph was linear in the range of 5-190 μg L−1 of lead and the detection limit was 0.8 μg L−1 with a sample volume of 200 mL. The proposed method was validated by the analysis of one certified reference material and applied successfully to the determination of lead in real water samples.







Hamid Shirkhanloo, Kaveh Sedighi, and Hassan Zavvar Mousavi


The authors are thankful to Iranian Petroleum Industry Health Research Institute (ipihri) and Research Institute of Petroleum Industry (ripi) for their support for this work.

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