Nonaqueous Polarography of Quinones. V. Half-wave Potentials of o-Quinones in Relation to Carcinogenesis of Polyaromatic Hydrocarbons.

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概要

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• The half-wave potentials of five homologous o-quinones shown below were measured under identical conditions by the nonaqueous polarography in glacial acetic acid containing 0.25N ammonium acetate : 1,2-Naphthoquinone (o-NQ), 1,2-anthraquinone (o-AQ), 9,10-phenanthrenequinone (Ph. Q), benz [a] anthra-5,6-quinone (o-BAQ), dibenz-[a, h] anthra-5,6-quinone (o-DBAQ). The order of the ease with which they are reduced at the dropping mercury electrode are given by the following sequence : o-NQ > o-AQ > Ph.Q > o-DBAQ > o-BAQ This order agreed with the resonance theory as in the case of p-quinones described in a previous paper. From the standpoint of the order of E_<1/2>'s of the above-mentioned o-quinones, it was found that they might play some important roles in the carcinogenesis of their parent hydrocarbons.

• 1958-08-15

著者

• 石館 守三

  Faculty Of Pharmaceutical Sciences University Of Tokyo

• (故)一色 孝

  Faculty Of Pharmaeutical Sciences University Of Tokyo

• 多田 敬三

  Faculty Of Pharmaeutical Sciences University Of Tokyo

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