title: Surface interaction between chrysotile and solutions (dissolution and adsorption): systematic x-ray photoelectron spectroscopy studies.
abstract: To test the reactivity of asbestos in relation to its physical and structural properties, surface analysis was made by X-ray photoelectron spectroscopy. The dissolution kinetics of chrysotile in strong reagents demonstrate two rate-limiting steps for the reaction: Mg2+ diffusion and chemical reaction. In some components of the Krebs cycle and in dilute hydrochloric and in oxalic acids, the reaction is limited by the exchange of Mg2+ in the first mineral layer. The interaction of model phospholipid membranes with chrysotile fibres was also studied; the results are in good agreement with the hypothesis of bilayer adsorption. Photoelectron data for adsorption of ghosts indicate that both proteins and phospholipids must be adsorbed onto chrysotile fibres.
mesh_terms: D001194:Asbestos; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D008274:Magnesium; D012996:Solutions; D013052:Spectrometry, X-Ray Emission; D013499:Surface Properties
chemical_list: D012996:Solutions; D001194:Asbestos; D008274:Magnesium