title: Interaction of thin wetting films of lecithin with some divalent cations.
abstract: The impact of some divalent cations on the structure of a model membrane system, comprising wetting lipid films, is assayed in this work. The results from impedimetry suggest prominent structural changes upon the addition of the discussed ions to the electrolyte solution contacting the film. These changes are manifested by the increase of resistivity of the films as well as by the decrease of capacitance dispersion. In accordance with other data in the literature, manganese (Mn(2+)) turned out to have an effect greater than those of Mg(2+) and Ca(2+).
authors.affiliation: Department of Physics and Biophysics, Faculty of Medicine, Trakia University, 11 Armeiska, Stara Zagora 6003, Bulgaria. mi_karabaliev@abv.bg
authors.forename: Miroslav
authors.initials: M
authors.lastname: Karabaliev
authors.forename: Valery
authors.initials: V
authors.lastname: Kochev
mesh_terms: D002118:Calcium / Q000737:chemistry; D002412:Cations / Q000737:chemistry; D017097:Electric Impedance; D004563:Electrochemistry / Q000379:methods*; D008274:Magnesium / Q000737:chemistry; D008345:Manganese / Q000737:chemistry; D008560:Membrane Fluidity; D008563:Membrane Lipids / Q000737:chemistry*; D008567:Membranes, Artificial; D008670:Metals / Q000737:chemistry*; D010713:Phosphatidylcholines / Q000737:chemistry*; D013499:Surface Properties; D014906:Wetting Agents / Q000737:chemistry*
chemical_list: D002412:Cations; D008563:Membrane Lipids; D008567:Membranes, Artificial; D008670:Metals; D010713:Phosphatidylcholines; D014906:Wetting Agents; D008345:Manganese; D008274:Magnesium; D002118:Calcium