An innovative spray technique for the modification of pyrolysed Photoresist Carbon Electrodes with multiwalled carbon nanotubes was studied. The modified electrodes were used for the determination of trace levels of o-toluidine, a carcinogenic organic compound employed in the synthesis of azo-dyes. The best conditions in terms of solvent used and quantity of carbon nanotubes deposited are discussed. Comparison with usual deposition methods is presented.
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