A pre-concentration procedure using coprecipitation for detennination of lead and iron in several samples using flame atomic absorption spectrometry


saraçoğlu s., Soylak M., Peker D. S. K., Elci L., dos Santos W. N. L., Lemos V. A., ...More

ANALYTICA CHIMICA ACTA, vol.575, no.1, pp.133-137, 2006 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 575 Issue: 1
  • Publication Date: 2006
  • Doi Number: 10.1016/j.aca.2006.05.055
  • Journal Name: ANALYTICA CHIMICA ACTA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.133-137
  • Keywords: pre-concentration, coprecipitation, iron, lead, factorial design, SOLID-PHASE EXTRACTION, CLOUD-POINT EXTRACTION, FACTORIAL DESIGN, WATER SAMPLES, AMBERLITE XAD-4, NATURAL-WATERS, HEAVY-METALS, OPTIMIZATION, NICKEL, SYSTEM
  • Erciyes University Affiliated: Yes

Abstract

The present paper proposes a pre-concentration procedure for determination of lead and iron in several samples by flame atomic absorption spectrometry. In it, lead(II) and iron(III) ions are coprecipitated using the violuric acid-copper(H) system as collector. Afterwards, the precipitate is dissolved with 1 M HNO3 solution and the metal ions are determined. The optimization step was performed using factorial design involving the variables: pH, violuric acid mass (VA) and copper concentration (Cu).