Solid phase extraction of Cu(II), Pb(H), Fe(III), Co(II), and Cr(III) on Chelex-100 column prior to their flame atomic absorption spectrometric determinations

Soylak M.

ANALYTICAL LETTERS, cilt.37, sa.6, ss.1203-1217, 2004 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 37 Sayı: 6
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1081/al-120034064
  • Dergi Adı: ANALYTICAL LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1203-1217
  • Anahtar Kelimeler: Chelex-100, column, solid phase extraction, microwave digestion, wet digestion, AAS, CLOUD-POINT PRECONCENTRATION, PRE-CONCENTRATION EFFICIENCY, HEAVY-METALS, SPECTROPHOTOMETRIC DETERMINATION, ONLINE PRECONCENTRATION, WATER SAMPLES, WASTE-WATER, ACTIVATED CARBON, TRACE-ELEMENTS, LEAD
  • Erciyes Üniversitesi Adresli: Evet

Özet

A solid phase extraction procedure for flame atomic absorption spectrometric determination of Cu(II), Pb(II), Fe(III), Co(II), and Cr(III) is proposed on Chelex-100 resin. The sample solutions at pH 6 were pumped through a micro-column at the rate of 2.0 mL/min by using a peristaltic pump. The elution of the retained analytes on the column was performed with 5 mL of 1 M HNO3 at 2.0 mL/min flow rate. The recoveries of analyte ions were greater than 95%. The relative standard deviations at the 50 mug/L levels of analyte ions were generally lower than 3% (N = 10). Recoveries of spike addition to bottled mineral water and artificial seawater were quantitative (>95%). The proposed preconcentration/separation method has been applied to determinations of the analyte contents of microwave and wet digested black tea and natural water samples. The validation of the developed preconcentration/ separation procedure was carried out by successfully analyzing standard stream sediment (GBW7310) reference material.