Bulletin of the Faculty of Agriculture, Shimane University

Faculty of Agriculture, Shimane University

ISSN:0370-940X

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Use this link to cite this item : https://ir.lib.shimane-u.ac.jp/3827

Bulletin of the Faculty of Agriculture, Shimane University 2

1968-12-15 発行

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Polarography of Sunset Yellow

Date, Yoshio

Yamamoto, Harumi

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d0030002n023.pdf 773 KB

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Sunset Yellow (SY) shows a well defined wave in various buffer solutions of pH values between 2 and 10. It's half-wave Potential (E_<1/2>) does not depend on the kinds of buffer components, their concentrations and the addition of potassium chloride. E_<1/2> shifts about 70 mV/pH unit at pH values between 2 and 8 , while at the other pH values higher than 8 shifts about 42 mV/pH unit. The height of the wave is independent of pH, and is remarkably affected by the increase of ionic strength (μ). SY is reduced to amines by accepting four electrons per molecule through the whole electrode process.

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d0030002n023.pdf 773 KB

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