The sensitive and selective determination of palladium(II) based on ternary-complex formation with phloxine and thiamine.
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概要
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A sensitive and selective spectrophotometric determination of palladium(II) based on ternary-complex formation with Phloxine and thiamine was established. The apparent molar absorptivity of the proposed method, which does not require an extraction procedure, was 1.02×10<SUP>5</SUP> dm<SUP>3</SUP> mol<SUP>−1</SUP> cm<SUP>−1</SUP> at 565 nm. Only gold(III) in an equimolar ratio of palladium(II) among the metal ion examined interfered. The method was applied to a determination of palladium in palladium carbon and palladium asbestos; the results were in good agreement with those obtained by potassium iodide method, the Michler's thioketone method and ICP-AES. The sensitivity could be further enhanced by about 20 times over that of spectrophotometry and/or fluorimetry by combining it with a membrane filter preconcentration technique. It was suggested that the collection of an aggregate on a membrane filter depends on the molecular size through observing by an scanning electron microscope.
- 公益社団法人 日本化学会の論文
著者
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MORI Itsuo
Osaka College of Pharmacy
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Fujita Yoshikazu
Osaka College Of Pharmacy
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Nakamura Masaki
Osaka Municipal Technical Res. Inst.
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Kato Keiji
Osaka University of Pharmaceutical Sciences
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Nakamura Masaki
Osaka University of Pharmaceutical Sciences
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Toyoda Minako
Osaka University of Pharmaceutical Sciences
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Nakahashi Yoshihiro
Osaka University of Pharmaceutical Sciences
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Fujita Yoshikazu
Osaka College of Pharmaceutical Sciences
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