Journal
ANALYTICA CHIMICA ACTA
Volume 539, Issue 1-2, Pages 61-67Publisher
ELSEVIER
DOI: 10.1016/j.aca.2005.02.051
Keywords
palladium; immobilized yeast; matrix separation; road dust; GFAAS
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A solid phase extraction procedure using a yeast Saccharomyces cerevisiae immobilized in calcium alginate beads is proposed for the determination of Pd in road dust. Palladium was separated from the matrix elements by selective retention on the column at acidic pH (pH 1-1.5) followed by subsequent elution with 1 ml of thiourea (TU) solution (0.3 mol(-1) TU in 0.25 mol 1(-1) HC1) and determination by graphite furnace atomic absorption spectrometry (GFAAS). The limit of detection was 7 ng g(-1). The method validation was performed by analysis of certified reference material SARM-7 (platinum ore). The concentration of Pd in road dust samples collected in Bialystok (Poland) determined by the evaluated method is in the range 114.2-215.5 ng g(-1). The analysis of data shows inhomogeneous distribution of Pd in road dust. (c) 2005 Elsevier B.V. All rights reserved.
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