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Spectrophotometric determination of palladium(II) with phenylfluorone in the presence of hexadecylpyridinium bromide

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  • Inorganic Analysis
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Abstract

Phenylfluorone reacts with palladium(II) in the presence of hexadecylpyridinium bromide to form a water-soluble chelate with an absorption maximum at 630 nm, the absorbance being constant in the pH-range of 9.0–10.2. At this wavelength Beer's law is obeyed up to 7.25 × 10−5 mol/L palladium(II). The sensitivity is very high and the molar absorptivity is 8.5 × 104 L mol−1 cm−1, permitting the determination of palladium(II) at µg level. The ratio of palladium to phenylfluorone in the complex is 1:1. The method has successfully been applied to the determination of palladium in titanium alloys.

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Authors and Affiliations

  1. Industrial Research Institute of Aomori Prefecture Fukuro-machi, 036, Hirosaki-shi, Japan

    Satoru Sakuraba

  2. Laboratory for Analytical Chemistry, Faculty of Engineering, Chiba University, 1-33, Yayoi-cho, Inage-ku, 263, Chiba-shi, Japan

    Koichi Oguma

Authors
  1. Satoru Sakuraba
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  2. Koichi Oguma
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Sakuraba, S., Oguma, K. Spectrophotometric determination of palladium(II) with phenylfluorone in the presence of hexadecylpyridinium bromide. Fresenius J Anal Chem 349, 523–526 (1994). https://doi.org/10.1007/BF00323986

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  • DOI: https://doi.org/10.1007/BF00323986

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