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Volume :28 Issue : 2 2001      Add To Cart                                                                    Download

Atomic absorption spectrometric determination of copper, cobalt, cadmium, lead, nickel and chromium in table salt samples after preconcentration on activated carbon

Auther : MUSTAFA SOYLAK1 , IBRAHIM NARIN2 LATIF ElcI3 AND

1Erciyes University, Faculty of Art and Science, Department of Chemistry, 38039, Kayseri, Turkey, e-mail: soylak@erciyes.edu.tr

2 University, Faculty of Art and Science, Department of Chemistry, 51100, Ni Turkey

3 University, Faculty of Art and Science, Department of  Chemistry, 20020, Denizli, Turkey

4 University, Faculty of Science, Department of Chemistry, 06532, Ankara, Turkey

*for correspondence and reprint request.

ABSTRACT

Copper, cobalt, cadmium, lead, nickel, and chromium contents of table salt samples were determined by atomic absorption spectrometry after preconcentration/separation on an activated carbon column as pyrocatechol violet (PV) complexes. The PV-metal ion complexes buffered to pH 6 were retained on an activated carbon column and were then eluted from the column with 1 M nitric acid in acetone. The effect of matrix ions on recoveries of the working elements was also examined. The recoveries of metal ions were in the range of 95—103%. The relative standard deviations (RSD) of the metal ion determinations varied from 2 to 9%.

Keywords: Activated carbon; atomic absorption spectroscopy; preconcentration; table salts; trace metals.

 

 

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