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Journal of Analytical Chemistry

, Volume 60, Issue 9, pp 819–821 | Cite as

Spectrophotometric Study of the Complexation of Samarium(III) with Disodium 2-(2-Hydroxy-3-Sulfo-5-Nitrophenylazo)naphthalene-1,8-Dihydroxy-3,6-Disulfonate in the Presence of Cetyltrimethylammonium Bromide

  • S. R. Gadzhieva
  • F. E. Guseinov
  • F. M. Chyragov
Articles

Abstract

The complexation of samarium(III) with disodium 2-(2-hydroxy-3-sulfo-5-nitrophenylazo)naphthalene-1,8-dihydroxy-3,6-disulfonate (R) was studied in the presence and absence of cetyltrimethylammonium bromide (CTMABr). Monoligand SmR and mixed-ligand SmR-CTMABr complexes were formed at pH 6 and showed light absorption maxima at 531 and 529 nm, respectively. The formation constants (logK1 ) of SmR and SmR-CTMABr complexes were 4.06 ± 0.04 and 4.99 ± 0.04, respectively. The ratios of components in monoligand and mixed-ligand complexes were found to be 1 : 2 and 1 : 1 : 1, respectively. Beer's law was obeyed in solutions containing 1.20–7.20 and 1.20–9.60 µg/mL Sm, respectively. A procedure for the photometric determination of samarium in monazite was developed.

Keywords

Analytical Chemistry Bromide Absorption Maximum Light Absorption Disodium 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© MAIK "Nauka/Interperiodica" 2005

Authors and Affiliations

  • S. R. Gadzhieva
    • 1
  • F. E. Guseinov
    • 1
  • F. M. Chyragov
    • 1
  1. 1.Department of ChemistryBaku State UniversityBakuAzerbaijan

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