Electronic absorption spectra of palladium(II) in concentrated nitric acid solutions

Toshiyuki Fujii, Souichirou Egusa, Akihiro Uehara, Akira Kirishima, Isao Yamagishi, Yasuji Morita, Hajimu Yamana

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17 Citations (Scopus)


Palladium complexation in concentrated nitric acid solutions was studied by UV/Vis absorption spectrophotometry. The ionic strength of the solutions was fixed to I = 1, 3, or 5 mol dm-3 (M) by mixing of HNO3 and HClO4. The major palladium species were found to be Pd2+, PdNO3 +, and Pd(NO3)2. The formation constant of PdNO3 + was determined to be β 1 = 1.32 (I = 1 M), 1.49 (I = 3 M), or 1.47 (I = 5 M), while that of Pd(NO3)2 to be β 2 = 0.45 (I = 3 M) or 0.14 (I = 5 M).

Original languageEnglish
Pages (from-to)475-478
Number of pages4
JournalJournal of Radioanalytical and Nuclear Chemistry
Issue number2
Publication statusPublished - 2011 Nov


  • Absorption spectrophotometry
  • Formation constant
  • Ionic strength
  • Nitric acid
  • Palladium

ASJC Scopus subject areas

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis


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