Naslov
Rainwater dissolved organic carbon: Characterization of surface active substances by electrochemical method

Autori
Ćosović, Božena ; Orlović Leko, Palma ; Kozarac, Zlatica

Izvornik
Electroanalysis (1040-0397) 19 (2007), 19-20; 2077-2084

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

Ključne riječi
AC voltammetry ; adsorption ; organic matter ; rainwater ; surface active substances

Sažetak
Surface active substances as organic constituents of bulk precipitation were studied by AC voltammetric method. Adsorption characteristics at the mercury electrode of real rainwater samples are compared with aqueous solutions of a number model substances suggested to be representative of water soluble organic compounds (WSOC) in atmospheric aerosols and droplets: monocarboxylic, dicarboxylic and polyacidic compounds, levoglucosan, polyaromatic hydrocarbon naphtalene and anionic surfactant sodium dodecylbenzene sulphonate. On the basis of the capacitance vs potential curves and the surfactant activity normalized to the organic carbon content it is concluded that humic like substances, monocarboxylic acids and polyaromatic hydrocarbons may play an important role in atmospheric aquatic system because of their surface active potential.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Kemijsko inženjerstvo

Napomena
Special Issue: Electroanalysis and the Environment

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