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Determination of silicon using electrothermal Zeeman atomic absorption spectrometry in presence of some transition metals as modifiers

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Abstract

The transition metals ions Cr(III), Mn(II), Fe(III), Co(II), Ni(II), and Zn(II) in addition to Ca(II) have been used as modifiers in the determination of silicon using electrothermal Zeeman atomic absorption spectrometry. Co(II) proved to be the best. Graphite tubes treated with zirconium, in the presence of Co(II) as a modifier, exhibit higher sensitivity by a factor of five than untreated tubes. The modifier concentration and ashing and atomization temperatures have been optimized. Also interference of different inorganic cations and anions was studied.

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Authors and Affiliations

  1. Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt, , , , , , EG

    A. F. Shoukry, Y. M. Issa & R. A. Farghaly

  2. Institute of Analytical Chemistry, Technical University, Vienna, Austria, , , , , , AT

    M. Grasserbauer, H. Puxbaum & J. Rendl

Authors
  1. A. F. Shoukry
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  2. Y. M. Issa
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  3. R. A. Farghaly
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  4. M. Grasserbauer
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  5. H. Puxbaum
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  6. J. Rendl
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Additional information

Received: 3 November 1996 / Revised: 16 April 1997 and 11 September 1997 / Accepted: 20 September 1997

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Shoukry, A., Issa, Y., Farghaly, R. et al. Determination of silicon using electrothermal Zeeman atomic absorption spectrometry in presence of some transition metals as modifiers. Fresenius J Anal Chem 360, 650–653 (1998). https://doi.org/10.1007/s002160050774

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  • DOI: https://doi.org/10.1007/s002160050774

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