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Rainwater Dissolved Organic Carbon: Characterization of Surface Active Substances by Electrochemical Method
Author(s) -
Ćosović Božena,
Orlović Leko Palma,
Kozarac Zlatica
Publication year - 2007
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200703907
Subject(s) - dodecylbenzene , chemistry , pulmonary surfactant , adsorption , aqueous solution , environmental chemistry , inorganic chemistry , electrochemistry , hydrocarbon , carbon fibers , total organic carbon , sulfonate , organic chemistry , electrode , sodium , materials science , biochemistry , composite number , composite material
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 sulfonate. 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.