ヒドロキシクマリンの過ヨウ素酸塩による酸化反応に及ぼす金属イオンの接触効果

• 山田 真吉

  静岡大学工学部

• 伴 和敏

  静岡大学工学部

• 村田 旭

  静岡大学工学部

書誌事項

タイトル別名

• Catalytic effect of metal ions on the oxidation of hydroxycoumarins with periodate.
• ヒドロキシクマリン ノ カ ヨウソサンエン ニ ヨル サンカ ハンノウ ニ オ

抄録

Kinetics of the oxidation of hydroxycoumarins with periodate was studied fluorometrically in acetate buffer. Among the nine coumarins studied, only the o-dihydroxy derivatives were oxidized by periodate to give yellow-colored nonfluorescent product. The reaction was catalytically accelerated by trace amount of metal ion. In the presence of copper(II) ion, the rate law for the oxidation of 4-methyl-6, 7-dihydroxycoumarin (S) with sodium periodate can be expressed as -d[S]/dt=k₁×[S][IO₄^-]+k₂[S][IO₄^-]/[H⁺] +k₃[S][IO₄^-][Cu²⁺]/[H⁺]. The catalytic capacity of metal ion was reflected in the value of k₃. The linear relationship between the logarithmic values of k₃ and the formation constant of 1:1 pyrocatecholate complex suggests that reaction involves a preequilibrium where a reactive complex is formed between metal ion and the coumarin. Employing this reaction system, copper(II) can be catalytically determined up to 65 ng/ml with the detection limit of 0.8 ng/ml.

収録刊行物

• 分析化学

  分析化学 40 (7), 337-342, 1991

  公益社団法人 日本分析化学会

キーワード

• oxidation of hydroxycoumarins with periodate
• catalytic determination of copper
• fluorometry

詳細情報

• CRID: 1390001204051183744
• NII論文ID: 110002906290
• NII書誌ID: AN00222633
• DOI: 10.2116/bunsekikagaku.40.7_337
• COI: 1:CAS:528:DyaK3MXltVGjtrc%3D
• HANDLE: 10297/2459
• NDL書誌ID: 3731482
• ISSN: 05251931
• Web Site: https://shizuoka.repo.nii.ac.jp/records/1691
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3731482
• Web Site: http://www.jstage.jst.go.jp/article/bunsekikagaku1952/40/7/40_7_337/_pdf
• Web Site: http://dl.ndl.go.jp/info:ndljp/pid/10892660
• 本文言語コード: ja
• データソース種別:
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