Electrochemical stripping analysis of methyl-parathion (MPT) using carbon fiber microelectrodes (CFME) modified with combinations of poly-NiTSPc and Nafion® films

A novel carbon fiber microelectrode (CFME) was obtained by tetrasulfonated plualocyanine (p-NiTSPc) electrodeposition on carbon surface combined with Nafion (R) coating for the detection of methyl-parathion (NIPT). Square-wave voltammetric parameters were optimized (frequency, initial scanning potential, scan increment and pulse height). Our contribution shows the possibility of a rapid detection of MPT on a poly-NiTSPc film with a clear electrocatalytic activity towards MPT redox process. It appeared also that nickel complexes-based associated to Nafion (R) coating offer an indisputable advantage for developing new electrode materials in the field of electrochemical detection of the MPT and their organic derivatives. (c) 2007 Elsevier B.V. All rights reserved.