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The indirect determination of differential capacity by high frequency modulation polarography

1974; Elsevier BV; Volume: 52; Issue: 2 Linguagem: Inglês

10.1016/s0022-0728(74)80361-x

2590-2954

G.C. Barker, J.A. Bolzan, Alan Gardner,

Spectroscopy and Quantum Chemical Studies

Modulation polarography, using a 2 MHz polarizing current, has been employed to study the non-linearity and differential capacity of the interface between mercury and aqueous solutions of various alkali metal chlorides at very negative potentials. The capacity data for these potentials show that approximately the derivative of capacity with respect to potential is an invariant function of differential capacity. Anomalous behaviour in the case of LiCl solution tentatively is attributed to slow partial dehydration of the cation as it approached its plane of closest approach.