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The adsorption of aliphatic fatty acids at aquatic interfaces / Ulrich Hans - Jakob

Public ISBD Titre : The adsorption of aliphatic fatty acids at aquatic interfaces : a comparison between polar and nonpolar surfaces Type de document : texte imprimé Auteurs : Ulrich Hans - Jakob, Auteur ; Werner Stumm, Directeur de thèse ; Cosovic Bozena, Directeur de thèse Editeur : zurich: [s.n.] Année de publication : 1986 Importance : 195 f. Présentation : ill. Format : 30 cm. Note générale : PhD thesis : Chemical Engineering : swiss federal institute of technology zurich : 1986 Bibliogr. en fin de chapitre Langues : Anglais (eng) Mots-clés : Adsorption Aliphatic Index. décimale : D004386 Résumé : Adsorption at solid interfaces is a most important process regulating the activities of organic solute molecules in natural aquatic systems. Amphiphilic substances (i. e. substances containing both a hydrophobic and a hydrophilic part) like fatty acids can adsorb on polar and on nonpolar surfaces. The adsorptive behavior of different aliphatic fatty acids was studied as a function of their hydrophobic properties, system pH and of the type of adsorbing surface. The hanging mercury drop electrode was used as a model of a nonpolar surface. It offers a smooth, reproducible and renewable surface. The replacement of water molecules by organic compounds leads to a decrease of the differential capactiance at the water/electrode-interface. This effect was determined polarographically by using phase selective alternating current (AC) polarography. The adsorption of aliphatic fatty acids at aquatic interfaces : a comparison between polar and nonpolar surfaces [texte imprimé] / Ulrich Hans - Jakob, Auteur ; Werner Stumm, Directeur de thèse ; Cosovic Bozena, Directeur de thèse . - Suisse : zurich: [s.n.], 1986 . - 195 f. : ill. ; 30 cm. PhD thesis : Chemical Engineering : swiss federal institute of technology zurich : 1986 Bibliogr. en fin de chapitre Langues : Anglais (eng) Mots-clés : Adsorption Aliphatic Index. décimale : D004386 Résumé : Adsorption at solid interfaces is a most important process regulating the activities of organic solute molecules in natural aquatic systems. Amphiphilic substances (i. e. substances containing both a hydrophobic and a hydrophilic part) like fatty acids can adsorb on polar and on nonpolar surfaces. The adsorptive behavior of different aliphatic fatty acids was studied as a function of their hydrophobic properties, system pH and of the type of adsorbing surface. The hanging mercury drop electrode was used as a model of a nonpolar surface. It offers a smooth, reproducible and renewable surface. The replacement of water molecules by organic compounds leads to a decrease of the differential capactiance at the water/electrode-interface. This effect was determined polarographically by using phase selective alternating current (AC) polarography.

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité	Spécialité	Etat_Exemplaire
D004386	D004386	Papier	Bibliothèque centrale	Thèse de Doctorat	Disponible