Speciation of chromium in blood samples based on dithioglycerol immobilized on carbon nanotube by dispersive micro solid phase bioextraction

Volume 3, Issue 03, Pages 65-75, Sep 2020 *** Field: Analytical method by nano chemistry

  • Nafiseh Esmaeili Semnan Un.
  • Eskandar Kolvari Department of chemistry, Faculty of Science, Semnan University, Semnan, Iran
  • Jamshid Rakhtshah, (Corresponding Author)* Department of Inorganic Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
Keywords: Chromium, Speciation, Blood sample, Dithioglycerol immobilized on carbon nanotubes, Dispersive micro solid phase bioextraction


A novel method based on the synthesis of dithioglycerol immobilized on carbon nanotubes (CNTs@DTG) was used for speciation of chromium (Cr III and Cr VI) in human blood samples by dispersive micro solid-phase bio extraction (D-μ-SPBE). By procedure, a mixture containing acetone, 1-octyl-3-methylimidazolium hexafluorophosphate ([OMIM][PF6]), and CNTs@DTG were injected into 5 mL of the standard sample containing 1.0 μg L-1 of Cr III and Cr VI which was diluted with DW up to 10 mL at optimized pH. The Cr (VI) anions and Cr (III) cations were efficiently extracted by HS of CNTs@DTG at pH 2 and 6, respectively (HS.....Cr), and trapped into IL phase at the bottom of the conical tube. Then, Cr (III) and Cr(VI) ions were back-extracted before determined by electrothermal atomic absorption spectrometry (ETAAS). The enrichment factor (EF), linear range, and limit of detection (LOD) were obtained 9.85, 0.12-3.88 μg L-1, and 30 ng L-1, respectively. 


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How to Cite
Esmaeili, N., Kolvari, E., & Rakhtshah, J. (2020). Speciation of chromium in blood samples based on dithioglycerol immobilized on carbon nanotube by dispersive micro solid phase bioextraction. Analytical Methods in Environmental Chemistry Journal, 3(03), 65-75. https://doi.org/10.24200/amecj.v3.i03.114
Original Article