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Polyallylammonium Ferrocyanide Films for Trace Water Detection in Halogenated Solvents
Author(s) -
Liang Jie,
Elliot Matthew C.,
Cammarata Vince
Publication year - 2009
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.200900153
Subject(s) - ferrocyanide , anhydrous , ferricyanide , chemistry , inorganic chemistry , electrolyte , chloride , trace amounts , supporting electrolyte , electrode , organic chemistry , medicine , alternative medicine , pathology
Polyallylammonium films with electrostatically bound ferrocyanide were formed by electrochemically reducing ferricyanide ions in the presence of polyallylammonium chloride. These films could be deposited onto the surfaces of Pt, Au or SnO 2 electrodes. In anhydrous organic electrolyte solutions, these films are electroinactive but become electroactive after the addition of trace water. For concentrations of water from 0.0 to 0.12% in chlorinated solvents, the electroactivity is linear with water concentration. The linearity between concentration of water and electroactivity can be exploited to develop a subsaturation trace water sensor.