Electroanalysis of some common pesticides using conducting polymer/multiwalled carbon nanotubes modified glassy carbon electrode

Voltammetric Analysis of Pesticides

“…Some other works have b e e n r e p o r t e d i n w h i c h M W C N T s w e r e c o m b i n e d w i t h c o n d u c t i v e p o l y m e r s t o f o r m composite structures which then associated the properties of both components: the wellknown electrocatalytic and adsorption characteristics of MWCNTs, and the bound active surface functionalities of conductive polymers. Following the same line, an efficient sensor was obtained by covering a MWCNT modified glassy carbon electrode with polypyrrole and polyaniline, and used to electrochemically reduce isoproturon, voltage and difocol (Manisankar et al, 2008). More recently, a viable nanocomposite platform formed by a basal plane pyrolytic carbon electrode nanostructured with Ni(II)-phtalocyanine and MWCNTs has been shown to exhibit sensitive electrocatalytic properties towards the detection of asulam pesticide (Siswana et al, 2010).…”

New Materials in Electochemical Sensors for Pesticides Monitoring

“…Advantages of electropolymerization include the ability to coat very small or irregularly shaped electrode surfaces with a polymeric film, the ability to control film thickness based upon the amount of charge passed in the case of conducting films or by self-regulation in the case of non conducting films, and the ability to influence both the polymerization rate and the nature of the film via the applied potential use during electropolymerization. To prepare these molecularly imprinted layers on electrodes, such as polypyrrole (Ramanaviciene et al, 2006), overoxidized polypyrrole (Ozkorucuklu et al, 2008), polyaniline (Manisankar et al, 2008a) polyphenylendiamines (Liu et al, 2009;Malitesta et al, 1999), polyphenol (Panasyuk et al, 1999) or in some cases redox polymers such as metalloporphyrins (Gomez-Caballero et al, 2010;Mazzotta & Malitesta, 2010) have been used. The growth of these types of MIPs depends on the nature of the synthesized polymers.…”

“…Usage of conducting polymers as modifiers is a very promising field (Manisankar et al, 2002;Manisankar et al, 2004) because MWCNTs exhibit excellent electrocatalytic and adsorption properties (Ajayan, 1999) and conducting polymers exhibit preferential accumulation of analytes on bound surface functionalities (Manisankar et al, 2005b). In this sense it has been proposed a multiwalled carbon nanotubes modified glassy carbon electrode, covered with polyaniline and polypyrrole coating for the electrochemical reduction of the herbicide isoproturon, the insecticide voltage and the acaricide dicofol (Manisankar et al, 2008a) or of the insecticides cypermethrin, deltamethrin and fenvalerate (Manisankar et al, 2008b;Siswana et al, 2010) report that nanostructured nickel (II) phthalocyanine/multiwalled carbon nanotubes composite supported on a basal plane pyrolitic electrode, could serve as a viable platform for the sensitive electrocatalytic detection of the carbamate pesticide asulam. The selection for the nanoparticles of nickel (II) phthalocyanine is motivated by the envisaged enhanced electrocatalytic properties for highsurface area metallophthalocyanine nanoparticles species.…”

Detection of Pesticide Thiram in Plant Leafs Using Voltammetric at Nanotube Electrode

“…Also included are an enzyme-based detection methodology (Lechunga et al, 1995), capillary zone electrophoresis (Brecht and Ganglitz, 1997), solid-phase microextraction, and gas chromatography with atomic emission detection (Ayyagari et al, 1995). Moreover an automated (Cheng et al, 2007), microextraction (Campillo et al, 2007) Thus, voltammetric sensors such as polymeric enzyme electrodes (Dutta et al, 2008), gold nanoparticles at tyrosinase electrode (Kim et al, 2008), poly 3,4 ethylenedioxythiophene modified wall jet electrode (Manisankar et al, 2005), ferophthalocyanine chemically modified carbon paste electrode (Ciucu et al, 2003), polymer multiwalled carbon nanotubes modified glassy carbon electrode (Manisankar et al, 2008), and alumina sol gel sonogel carbon electrode (Zejli et al, 2008) have been searched, These electrodes are sensitive to detect pesticide, but the production of these electrodes are not easy and are time-consuming.…”