Artículos de revistas
Adsorption Of Colloidal Gold On Colloidal Iron Oxides
Registro en:
Journal Of Geochemical Exploration. , v. 40, n. 1-3, p. 133 - 142, 1991.
3756742
10.1016/0375-6742(91)90035-S
2-s2.0-0026358522
Autor
Enzweiler J.
Joekes I.
Institución
Resumen
Lateritic gold enrichment can be associated with the formation of colloidal gold and its interaction with the iron-oxide-rich medium. Adsorption of colloidal gold on synthetic goethite and hematite was measured at 25°C. The observed high affinity between the oppositely charged particles depends on the medium composition. The presence of citrate anions can inhibit mutual coagulation, while inert electrolytes enhance this effect. © 1991. 40 1-3 133 142 Alince, Colloidal particle deposition on pulp fibers (1989) Colloids Surf., 39, pp. 39-51 Atkinson, Posner, Quirk, Adsorption of potential determining ions at the ferric oxide - aqueous electrolyte interface (1967) J. Phys. Chem., 71, pp. 550-558 Breeuwsma, Lyklema, Interfacial Electrochemistry of Haematite (α-Fe2O3) (1971) Discuss. Faraday Soc., 52, pp. 324-333 Breewsma, Lyklema, Physical and chemical adsorption of ions in the electrical double layer on hematite (α-Fe2O3) (1973) Journal of Colloid and Interface Science, 43, pp. 437-448 Enüstün, Turkevich, Coagulation of colloidal gold (1963) Journal of the American Chemical Society, 85, pp. 3317-3328 Hagenmuller, (1957) Nouveau Traité de Chimie Minérale Masson, Paris, Tome III, p. 706 Hansen, Matijević, Heterocoagulation. Part 5, adsorption of a carboxylated polymer latex on monodispersed hydrated metal oxides (1980) J. Chem. Soc. Faraday Trans. I, 76, pp. 1240-1262 Hogg, Healy, Fuerstenau, Mutual coagulation of colloidal dispersions (1966) Trans. Faraday Soc., 62, pp. 1638-1651 Mann, Mobility of gold and silver in lateritic weathering profiles: some observations from Western Australia (1984) Econ. Geol., 79, pp. 38-49 McHugh, Concentration of gold in natural waters (1988) J. Geochem. Explor., 30, pp. 85-94 Morrison, Jr., Aqueous adsorption of anions onto oxides at pH levels above the point of zero charge (1984) J. Colloid Interf. Sci., 100, pp. 121-127 Nagy, The close analogy between the preferencial solvatation of polymers in mixed solvents and adsorption from liquid mixtures at solid/liquid interfaces (1988) Langmuir, 4, pp. 93-96 Oliveira, Campos, Gold-bearing iron duricrust in central Brazil (1991) Journal of Geochemical Exploration, 41 Ottewill, Concentrated dispersions in colloidal dispersions (1982) Colloidal Dispersions, pp. 197-217. , J.W. Goodwin, Royal Society of Chemistry, London Overbeek, Colloids, a fascinating subject: introductory lecture (1982) Colloidal Dispersions, pp. 1-21. , J.W. Goodwin, Royal Society of Chemistry, London Turkevich, Stevenson, Hillier, A study of the nucleation and growth processes in the synthesis of colloidal gold (1951) Discuss. Faraday Soc., 11, pp. 55-75 Uyeda, Nishino, Suito, Nucleus interaction and fine structures of colloidal gold particles (1973) J. Colloid Interf. Sci., 43, pp. 264-276 Webster, The solubility of gold and silver in the system Au-Ag-S-O2-M2O at 25°C and 1 atm (1986) Geochim. Cosmochim. Acta, 50, pp. 1837-1845 Webster, Mann, The influence of climate, geomorphology and primary geology on the supergene migration of gold and silver (1984) J. Geochem. Explor., 22, pp. 21-42 Zeltner, Anderson, Surface charge development at the goethite/aqueous solution interface: effects of CO2 adsorption (1988) Langmuir, 4, pp. 469-474 Zhang, Kallay, Matijević, Interactions of metal hydrous oxides with chelating agents. 7. Hematite-oxalic and -citric acid systems (1985) Langmuir, 1, pp. 201-206