Constant Current Chronopotentiometric Stripping Analysis of 'N-Catalyst' in Sodium Chloride Solution and Seawater

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...

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Bibliographic Details
Published in:Electroanalysis (New York, N.Y.) N.Y.), 2010-01, Vol.22 (1), p.91-98
Main Authors: Strmecki, Sladana, Plavsic, Marta, Cosovic, Bozena
Format: Article
Language:English
Subjects:
Alternating current
Catalysis
Catalysts
Chronopotentiometric stripping analysis
Equivalence
Mathematical models
N-containing polymeric organic material
Peak H
Sea water
Seawater samples
Sodium chloride
Stripping
Water chemistry
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Summary: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.
ISSN:1040-0397
1521-4109
DOI:10.1002/elan.200900233