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. , ...Daha Fazla

ANALYTICA CHIMICA ACTA, cilt.575, ss.133-137, 2006 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 575 Konu: 1
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.aca.2006.05.055
  • Dergi Adı: ANALYTICA CHIMICA ACTA
  • Sayfa Sayıları: ss.133-137

Özet

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).