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Adsorption of Carrageenans on Mercury Surface in Sodium Chloride Solution and Seawater

Marta Plavšić ; Center for Marine and Environmental Research, Ruđer Bošković Institut, P.O.B. 1016, HR-10001 Zagreb, Croatia
Božena Ćosović ; Center for Marine and Environmental Research, Ruđer Bošković Institut, P.O.B. 1016, HR-10001 Zagreb, Croatia

Puni tekst: engleski, pdf (107 KB) str. 233-243 preuzimanja: 152* citiraj
APA 6th Edition
Plavšić, M. i Ćosović, B. (1998). Adsorption of Carrageenans on Mercury Surface in Sodium Chloride Solution and Seawater. Croatica Chemica Acta, 71 (2), 233-243. Preuzeto s https://hrcak.srce.hr/132344
MLA 8th Edition
Plavšić, Marta i Božena Ćosović. "Adsorption of Carrageenans on Mercury Surface in Sodium Chloride Solution and Seawater." Croatica Chemica Acta, vol. 71, br. 2, 1998, str. 233-243. https://hrcak.srce.hr/132344. Citirano 22.09.2020.
Chicago 17th Edition
Plavšić, Marta i Božena Ćosović. "Adsorption of Carrageenans on Mercury Surface in Sodium Chloride Solution and Seawater." Croatica Chemica Acta 71, br. 2 (1998): 233-243. https://hrcak.srce.hr/132344
Harvard
Plavšić, M., i Ćosović, B. (1998). 'Adsorption of Carrageenans on Mercury Surface in Sodium Chloride Solution and Seawater', Croatica Chemica Acta, 71(2), str. 233-243. Preuzeto s: https://hrcak.srce.hr/132344 (Datum pristupa: 22.09.2020.)
Vancouver
Plavšić M, Ćosović B. Adsorption of Carrageenans on Mercury Surface in Sodium Chloride Solution and Seawater. Croatica Chemica Acta [Internet]. 1998 [pristupljeno 22.09.2020.];71(2):233-243. Dostupno na: https://hrcak.srce.hr/132344
IEEE
M. Plavšić i B. Ćosović, "Adsorption of Carrageenans on Mercury Surface in Sodium Chloride Solution and Seawater", Croatica Chemica Acta, vol.71, br. 2, str. 233-243, 1998. [Online]. Dostupno na: https://hrcak.srce.hr/132344. [Citirano: 22.09.2020.]

Sažetak
Adsorption of natural sulphated polysaccharides from algal sources, ι-, κ- and λ-carrageenans, on mercury surface was studied by out of phase a.c. voltammetry. Adsorption studies were performed in a wide concentration range (10 mg/L up to 15 g/L) and the influence of the adsorbed layer on the reduction of cadmium ions, used as a probe, was studied as well. The adsorption was measured at two potentials, -0.2 V and -0.6 V vs. Ag/AgCl reference electrode. The stronger, one step adsorption, was obtained at the potential of -0.2 V. At the potential of -0.6 V, the first adsorption plateau was established at the concentration of app. 100 mg/L of added polysaccharide while at the concentration of few g/L a second adsorption plateau was established. The oxido-reduction processes of Cd2+ ions were influenced by the presence of sulphopolysaccharides only in the concentration range of a few grams/L. At the potential of E = -0.6 V after the first adsorption plateau, adsorption is a slow process, determined by both the concentration of polymer in the solution and the time of adsorption. It is most probable that transformations of the adsorbed layer occur.

Hrčak ID: 132344

URI
https://hrcak.srce.hr/132344

Posjeta: 257 *