Kinetics of marine surfactant adsorption at an air water interface. Baltic Sea studies

• Autorzy: Pogorzelski S.J. , Kogut A. D.
• Języki publikacji: EN

Abstrakty

EN

The paper contains the results of studies of natural surface film adsorption kinetics carried out in inland waters and in shallow offshore regions of the Baltic Sea during 2000-01 under calm sea conditions. The novel approach presented here for the adsorption dynamics is based on the mixed kinetic-diffusion model and analyses of the surface pressure-time plots at short (t →0) and long( t →∞) adsorption time intervals. Values of the effective relative diffusion coefficient Deff / D (= 0.008-0.607) and energy barrier for adsorption Ea / RT (= 0.49-7.10) agree well with the data reported for model non-ionic surfactant solutions of pre-cmc concentrations. Wind speed is one of the factors affecting the adsorption barrier via the increased surface pressure of the natural film exposed to wind shear stress (~ U102), and enters the relation Ea / RT = 1.70 U101/3.

Słowa kluczowe

EN

marine films; surface adsorption; adsorption kinetics; diffusion coefficient; adsorption barrier

• Wydawca: Polish Academy of Sciences, Institute of Oceanology ; Elsevier
• Czasopismo: Oceanologia
• Rocznik: 2001
• Tom: No. 43 (4)
• Strony: 389--404
• Opis fizyczny: Bibliogr. 25 poz., tab., wykr.

Twórcy

autor

Pogorzelski S.J.

autor

Kogut A. D.

• Institute of Experimental Physics, University of Gdańsk, Wita Stwosza 57, PL-80-952 Gdańsk, Poland,