Nafion sensor, response characteristics

A Nafion film-coated micro-electrode is very advantageous for in vivo detection of neurotransmitter-related species such as dopamine and catecholamine . The partition and diffusion of the substance in the coating film are generally important factors that influence the response characteristics of the coated electrode. A quinonoid polymer electrode, prepared by the electrochemical oxidation of mercaptohydro-quinone and modified with mercaptide, functioned as a selective ion sensor for heavy metal ions such as Ag", Hg , Cd , and Cu in solution A PVC membrane electrode containing macrocyclic polyethers with sulfur atoms (id) exhibited appreciable selectivity for Ca " " relative to Mg ", alkali metal ions and... 

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