Application of the vibrating plate (VP) technique to measuring electric surface potential, ΔV, of solutions; the flow cell for simultaneous measurement of the ΔV and the surface pressure, Π

摘要: Abstract This paper describes the measuring procedure which enables overcoming base difficulty in application of vibrating plate (VP) technique to electric surface potential (ΔV) free solution surfaces, namely loosing zero level set for reference sample (water) while replacing it with measured. (The ΔV measurement is performed by comparing two measurements series, i.e., pure interface and that containing a film.) Main improvement achieved (i) applying flow exchanging measured (ii) elimination an error driven dependency signal on air gap width. The width fixed contact bottom edge platinum Wilhelmy simultaneously used pressure (Π). results received new methodology n-decanoic acid, n-decyl-trimethylammonium bromide (C10TABr) sodium n-dodecyl sulphate (SLS) are discussed.