Indirect Detection of Alkaline Earth Ions by the Voltammetric Response of Ferricyanide Anion at a Glassy Carbon Electrode Anodized in 1-Octanol.

Electrochemically Assisted Covalent Modification of Carbon Electrodes

“…Ohmori and co-workers propose that the procedure yields a layer of alkyl groups covalently attached to the electrode, most likely through an ether link [6,15,39,40]. They suggest a mechanism in which oxidation of the carbon surface produces an aromatic radical, which undergoes nucleophilic attack by the alcohol.…”

“…Indirect detection of alkaline earth cations at GC electrodes modi®ed in 1-octanol has been demonstrated by Ohmori and coworkers [15]. The cathodic current generated from a solution of 5 mM Fe(CN) 3À 6 with 10 mM KCl increases with the concentration of alkaline earth cation in solution.…”

Modification of Carbon Electrode Surfaces

“…It has been shown that the suppression of the voltammetric response of [Fe(CN) 6 ] 3−∕4− at a GC electrode modified with 1-octanol can be restored with the addition of alkaline earth metal ions. In fact, this phenomenon has been used to detect metals ions [110]. The cathodic current of [Fe(CN) 6 ] 3−∕4− is found to be linearly dependent in the concentration range of 10 −5 -10 −3 M for Ca +2 , Mg +2 , Sr +2 , and Ba +2 .…”

Preparation and Characterization of Novel Choline and L‐Glutamic Acid Mixed Monolayer Covalently Modified Glassy Carbon Electrode and Its Analytical Application to Nitrite Determination

“…[1][2][3][4][5][6][7][8][9][10] Among them, there are two interesting methods. One is based on amine-containing compounds utilizing electrooxidation of amines to their analogous cationic radicals to form a chemically stable covalent linkage between the nitrogen atom of the amine and edge plane sites of the glassy carbon electrode (GCE) surface.…”