Development of a selective and sensitive flotation method for determination of trace amounts of cobalt, nickel, copper and iron in environmental samples

Karimi H., Ghaedi M., Shokrollahi A., Rajabi H. R., SOYLAK M., Karami B.

JOURNAL OF HAZARDOUS MATERIALS, vol.151, no.1, pp.26-32, 2008 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 151 Issue: 1
  • Publication Date: 2008
  • Doi Number: 10.1016/j.jhazmat.2007.05.051
  • Journal Name: JOURNAL OF HAZARDOUS MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.26-32
  • Keywords: preconcentration, flotation, 2-pyridyl ketone oxime (PPKO), flame atomic absorption spectrometry, environmental samples, ABSORPTION SPECTROMETRIC DETERMINATION, CLOUD-POINT PRECONCENTRATION, EXTRACTION, SEPARATION, WATER, LEAD, 1-(2-PYRIDYLAZO)-2-NAPHTHOL, CADMIUM
  • Erciyes University Affiliated: Yes

Abstract

A simple, selective and rapid flotation method for the separation-preconcentration of trace amounts of cobalt, nickel, iron and copper ions using phenyl 2-pyridyl ketone oxime (PPKO) has been developed prior to their flame atomic absorption spectrometric determinations. The influence of pH, amount of PPKO as collector, type and amount of eluting agent, type and amount of surfactant as floating agent and ionic strength was evaluated on the recoveries of analytes. The influences of the concomitant ions on the recoveries of the analyte ions were also examined. The enrichment factor was 93. The detection limits based on 3 sigma for Cu, Ni, Co and Fe were 0.7, 0.7, 0.8, and 0.7 ng mL(-1), respectively. The method has been successfully applied for determination of trace amounts of ions in various real samples. (C) 2007 Elsevier B.V. All rights reserved.