Electroanalysis · 2011 · 18 citations · 18 references
Natural SciencesChemical EngineeringChemistryAnalytical ChemistryElectroanalytical MethodsElectrochemistryElectroanalytical ChemistryElectrochemical DetectionElectrochemical SensorsEnvironmental AnalysisEnvironmental Analytical ChemistryNanotubesDifferential Pulse VoltammetryGlassy Carbon ElectrodesMethod Detection LimitMulti-walled Carbon NanotubesNanomaterial-modified ElectrodesOzonationOzoneVoltammetry
Abstract A new electrochemical methodology has been developed for the detection of ozone using multiwalled carbon nanotubes (MWCNT). The method presented here is based on the reaction of ozone with indigo blue dye producing anthranilic acid (ATN). The electrochemical profile of ATN on an electrode of glassy carbon (GC) modified with MWCNT showed an oxidation peak potential at 750 mV vs. Ag/AgCl. An analytical method was developed using differential pulse voltammetry (DPV) to determine ATN in a range of 50–400 nmol L −1 , with a detection limit of 9.7 nmol L −1 . Ozonated water samples were successfully analyzed by GC/MWCNT electrode and the recovery procedure yielded values between of 96.5 and 102.3 %.
18
Helical microtubules of graphitic carbon
Sumio Iijima · Nature · 1991 · 42.8K citations
Determination of ozone in water by the indigo method
H. Bader, J. Hoigné · Water Research · 1981 · 2.2K citations