Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Spectrophotometric Determination of Palladium after Solid-liquid Extraction with 4-(2-Pyridylazo)-resorcinol at 90°C

  • Dong, Yanjie (Department of Chemistry, Longdong University) ;
  • Gai, Ke (Department of Chemistry, Longdong University)
  • Published : 2005.06.20
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Abstract

An effective spectrophotometric determination of palladium with 4-(2-pyridylazo)-resorcinol (PAR) using molten naphthalene as a diluent has been studied. A red complex of palladium with PAR is formed at 90 ${^{\circ}C}$. In the range of pH 9.0-11.0, the complex is quantitatively extracted into molten naphthalene. The organic phase is anhydrously dissolved in $CHCl_3$ to be determined spectrophotometrically at 520 nm against the reagent blank. Beer’s law is obeyed over the concentration range of 0.1-2 ${\mu}g{\cdot}mL^{-1}$. The molar absorptivity and Sandell’s sensitivity are 8.0 ${\times}\;10^5\;L{\cdot}mol^{-1}{\cdot}cm^{-}1\;and\;0.49\;{\mu}g{\cdot}cm^{-2}$ respectively. From the results of tolerance limits, it was found that there was no interferences were observed for most of the ions examined and those somewhat high interferences by Co(II), Fe(II) and Bi(III) could be effectively masked by EDTA.

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References

  1. Yang, G. Y.; Xia, Z. Y.; Wu, Y. P.; Sun, H. D.; Yin, J. Y. Bull. Korean Chem. Soc. 2004, 25, 549 https://doi.org/10.5012/bkcs.2004.25.4.549
  2. Mashhadizadeh, M. H.; Moatafavi, A.; Allah-Abadi, H.; Zadmehr, M. R. Bull. Korean Chem. Soc. 2004, 25, 1309 https://doi.org/10.1007/s11814-008-0214-z
  3. Gao, J. Z.; Peng, B.; Fan, H. Y.; Kang, J. W.; Wang, X. D. Talanta 1997, 44, 837 https://doi.org/10.1016/S0039-9140(96)02122-4
  4. Gao, J. Z.; Hu, G. L.; Kang, J. W.; Bai, G. B. Talanta 1993, 40, 195 https://doi.org/10.1016/0039-9140(93)80321-H
  5. Gao, J. Z.; Hu, G. L.; Fan, H. Y.; Kang, J. W. Talanta 1994, 41, 541 https://doi.org/10.1016/0039-9140(93)E0021-5
  6. Gao, J. Z.; Choppin, G. R. Solvent Extraction and Ion Exchange 1995, 13, 495 https://doi.org/10.1080/07366299508918287
  7. Vogel, A I. A Text Book of Quantitative Inorganic Analysis; Longmans press: London, 1969; p 234

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