Naslov
Characterization of atmospheric surfactants in the bulk precipitation by electrochemical tools

Autori
Orlović-Leko, Palma ; Kozarac, Zlatica ; Ćosović, Božena ; Strmečki, Slađana ; Plavšić, Marta

Izvornik
Journal of atmospheric chemistry (0167-7764) 66 (2010), 1/2; 11-26

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
AC voltammetry ; bulk precipitation ; organic films ; electrochemical tool

Sažetak
Characterization of atmospheric surfactants in bulk precipitations was carried out by adsorption study at the mercury electrode/solution interface using phase sensitive AC voltammetry. The structure and permeability of the adsorbed organic films at the mercury electrode was tested using the redox processes of lead and cadmium ions as electrochemical tools. The effects of organic matter from the bulk precipitations (rainwater and melted snow) were compared to those obtained for aqueous solutions of model substances: aromatic hydrocarbon (naphtalene), anionic surfactant (sodium dodecylbenzene sulfonate, NDBS), protein (albumine) and selected model substances suggested to be representative of water soluble organic compounds (WSOC) in atmospheric water (monocarboxylic, dicarboxylic, and polyacidic compounds and levoglucosan). It was found that substances like humic acid and 3-hydroxybutanoic acid may play an important role in atmospheric heterogeneous chemistry because of their surface active potential.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Kemijsko inženjerstvo

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