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Spectrophotometric determination of Hg(II) in water samples by dispersive liquid liquid microextraction with use ionic liquid after derivatization with a water soluble Fe(II) phthalocyanine

  • Yasemin Çağlar
  • Zekeriya Biyiklioglu
Original Article

Abstract

This study reports the synthesis of water soluble iron(II) phthalocyanine and a facile method for spectrophotometric determination of Hg(II) in environmental water samples by ionic liquid based dispersive liquid–liquid microextraction (IL-DLLME). In the method, 1-heptyl-3-methylimidazolium hexafluorophosphate (250 µL) as extraction solvent, acetonitrile (750 µL) as dispersive solvent and Triton X-100 (200 µL) as anti-sticking agent were used. After the extraction of the Hg(II) complex (Hg(II):q-Fe(II)-Pc) into thin droplets of ionic liquid, the sample was centrifuged for 4 min at 2000 rpm. The upper aqueous phase was removed and the residue diluted to 250 µL with methanol and transferred to a 250 µL cell for spectrophotometric detection at 280 nm. The linear range of the method is 0.05–1 µg/mL. The limits of detection and quantification is 0.01 and 0.03 µg/mL, respectively. The RSD for the developed method was calculated as 0.78% at 0.50 µg/mL Hg(II).

Keywords

Mercury DLLME Ionic liquids Spectrophotometry Fe(II) phthalocyanine 

Notes

Acknowledgements

We are grateful for the financial support of the Scientific and Technological Research Council of Turkey (TUBITAK). Grant Number: 115Z076.

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© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Genetic and BioengineeringGiresun UniversityGiresunTurkey
  2. 2.Department of ChemistryKaradeniz Technical UniversityTrabzonTurkey

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