The adsorption of NCS-ion on mercury from aqueous solutions

Minc, S.; Andrzejczak, J.

doi:10.1016/s0022-0728(68)80035-x

Cited by 40 publications

(2 citation statements)

References 9 publications

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“…as a first approximation, the variation of the activity coefficient with composition was not taken into account and, so, the (12), applying the surface found to be independent of frequency in the range 50-800 Hz. Analytical grade salts, dried over PZOS, were used without further purification.…”

Section: Introductionmentioning

confidence: 99%

The influence of the ionic strength on the adsorption of thiocyanate ions on mercury

Avaca¹,

González²,

Rocha‐Filho³

1983

Can. J. Chem.

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The adsorption of thiocyanate ions at mercury has been studied from aqueous solutions of two different and constant ionic strengths, namely, xM KSCN + (0.5 − x) M KF and xM KSCN + (1.0 − x) M KF, at 298 K. The surface excess due to thiocyanate ions was determined using the Hurwitz–Parsons analysis as well as using the surface pressure method. The amount of specifically adsorbed thiocyanate ion at a given electrode charge density and thiocyanate concentration is shown to depend on the ionic strength. For both ionic strengths, the adsorption process was found to be described by an isotherm congruent on the electrode charge density, to which virial isotherms were fitted with the following parameter values: B = 210 and 185 Å2 ion−1, and [Formula: see text] and −92.88 kJ mol−1, for ionic strengths 0.5 and 1.0 M, respectively. The properties of the inner layer are discussed based on the corresponding Christie plots.

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Section: Introductionmentioning

confidence: 99%

The influence of the ionic strength on the adsorption of thiocyanate ions on mercury

Avaca¹,

González²,

Rocha‐Filho³

1983

Can. J. Chem.

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“…No theoretical basis is claimed for eq 5, which is used here merely to represent the experimental data in a form suitable for digital simulation. (While eq 6 can be described formally in terms of a negative transfer coefficient, it more realistically reflects the approximately exponential decay of the interfacial activity β a of thiocyanate ions with increasingly negative electrode potential E …”

Section: Experimental Results and Simulationsmentioning

confidence: 99%