Celtek clay as sorbent for separation-preconcentration of metal ions from environmental samples

TÜZEN M., Melek E., Soylak M.

JOURNAL OF HAZARDOUS MATERIALS, vol.136, no.3, pp.597-603, 2006 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 136 Issue: 3
  • Publication Date: 2006
  • Doi Number: 10.1016/j.jhazmat.2005.12.036
  • Journal Name: JOURNAL OF HAZARDOUS MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.597-603
  • Keywords: Celtek clay, preconcentration, solid-phase extraction, flame atomic absorption spectrometry, ATOMIC-ABSORPTION-SPECTROMETRY, SOLID-PHASE EXTRACTION, CLOUD POINT EXTRACTION, HEAVY-METALS, SILICA-GEL, MULTIELEMENT PRECONCENTRATION, VOLTAMMETRIC DETERMINATION, NATURAL-WATERS, TRACE AMOUNTS, WASTE-WATER
  • Erciyes University Affiliated: Yes

Abstract

The sorption conditions including pH of the aqueous solution, sample volume, etc., on Celtek clay of copper(H), cadmium(11), lead(II), chromium(III), nickel(II) and cobalt(II) ions from environmental samples has been studied. The effects of electrolytes as matrix on the pre-concentration were also investigated with the recoveries > 95%. The 3 sigma detection limits for copper, cadmium, lead, chromium, nickel and cobalt ions were found to be 0.25, 0.32, 0.73, 0.45, 0.50 and 0.41 mu g/l, respectively. The relative standard deviation was < 10% for the determination of analytes. The procedure was validated by analysis of a NRCC-SLRS 4 Riverine Water, SRM 1573a Tomato leaves and IAEA 336 Lichen standard reference materials. The developed method was successively utilized for the determination of Cu(II), Cd(II), Pb(II), Cr(III), Ni(II) and Co(II) in various samples including natural waters, wheat and human hair by flame atomic absorption spectrometry (FAAS) with satisfactorily results (recoveries > 95% and R.S.D.'s < 10%). (c) 2005 Elsevier B.V. All rights reserved.