Constant Current Chronopotentiometric Stripping Analysis of ‘N‐Catalyst’ in Sodium Chloride Solution and Seawater |
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Authors: | Sladana Strmečki Marta Plavšić Božena Ćosović |
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Affiliation: | Ruder Bo?kovi? Institute, Division for Marine and Environmental Research, Bijeni?ka 54, P.?O.Box 180, 10?002 Zagreb, Croatia |
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Abstract: | Catalytic properties and surface activity of nitrogen containing polymeric organic material (N‐POM) were analyzed by constant current chronopotentiometric stripping analysis (CPSA) and alternating current (AC) voltammetry in sodium chloride solution (pH 8) and seawater. CPSA proved to be a suitable method for determination of low concentrations of N‐POM in seawater by measuring its ‘presodium’ catalytic peak H. A protein human serum albumin (HSA) (15% of N) was used as a model compound and the concentration of N‐POM from natural seawater samples was expressed in HSA concentration equivalents. Peak H represents an additional parameter for characterization of natural organic matter. |
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Keywords: | N‐containing polymeric organic material Peak H Chronopotentiometric stripping analysis Seawater samples Water chemistry |
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