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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 7, Number 1
February 20, 1963 

The Polarographic Wave of Co (Ⅲ)--Triethanolamine Complex
Hwang Am Kim
Cobalt(Ⅲ) ion gives two step waves with E1/2-0.1 V(?)(vs. S.C.E.) and E1/2- 1.37V(vs. S.C.E.) from a base electrolyte consisting of 0.1 M TEA+sodium borate+0.0002% gelatin. The first wave results from the reduction Co(Ⅲ) to Co(Ⅱ). The second wave corresponding to the reduction Co(Ⅱ) to Co(0) and this wave is diffusion controlled. The diffusion current constant of the second wave is 2.7. Under these-conditions, diffusion current of the second wave is proportional to the concentration of Co (Ⅱ) in the range of l0-3∼ 10-4 M.
34 - 37
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