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Title: Catechol (l ,2-dihydroxybenzene) inside charged film on electrode surface— A new voltammetric sensor for vitamin C
Authors: Bhattacharjya, Rimki
Das, Diganta Kumar
Issue Date: Apr-2006
Publisher: NISCAIR-CSIR, India
IPC Code: Int. Cl.8 G01N27/00
Abstract: Catechol shows good reversible cyclic voltammograms inside negative SDS, positive CTAB and zwitterionic phospholipid film on glassy carbon disc electrode in tris buffer (pH 7.0). The mid point potential values with respect to Ag-AgCl reference electrode are found to be +120 mV, +90 mV and +135 mV, respectively. While inside the SDS film, catechol interacts with vitamin C in solution and the anodic current decreases with increasing concentration of vitamin C without any change in cathodic peak current and position. Although no interaction with vitamin C is observed when catechol is inside CTAB film, the mid-point potential of Catechol inside lipid film is round to shift in negative direction when encapsulated in lipid film.
Page(s): 909-912
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections: IJC-A Vol.45A(04) [April 2006]

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