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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 10, Number 5
BKCSDE 10(5)
May 20, 1989

Title	Polarographic Behavior of Cadmium-Tartrate Complexes in Weak Acid and Alkaline Media
Author	Kyung-Ae Lee, Q. Won Choi, Young Gu Ha, Jin Ho Choy, Hasuck Kim
Keywords
Abstract	The electrochemical behavior of cadmium(Ⅱ) in tartrate solution has been studied over the pH range of 6 to 13.6 in order to explain the phenomena of the changes in limiting current depending on the pH. The polarographic limiting current showed a constant value up to pH of 7.8, after which it decreased sharply to show a minimum at pH between 11 and 12. The limiting current, then, increased again with increasing pH. The number of peaks in cyclic voltammogram was 1 to 3 depending on the pH of the solution. Two other voltammetric peaks could be observed when the main reduction peak diminished. The decrease of limiting current at 7.5 < pH < 9 was explained as the formation of complex Cd(C4H3O6)-. The increase of limiting current at strong alkaline solution, however, was due to the complex Cd(Tart)2(OH)24-.
Page	414 - 418
Full Text	PDF

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