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      Single-Walled-Carbon-Nanotube-Modified Pyrolytic Graphite Electrode Used as a Simple Sensor for the Determination of Salbutamol in Urine

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      International Journal of Electrochemistry
      Hindawi Limited

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          Abstract

          A fast and sensitive voltammetric method has been proposed for the determination of salbutamol at single-walled-carbon-nanotube-modified edge-plane pyrolytic graphite electrode (SWNT/EPPGE) in human urine. The electrochemical response of salbutamol was determined by square wave voltammetry (SWV) in phosphate buffer solution (PBS) at physiological pH 7.2. The modified electrode showed improved voltammetric response towards the oxidation of salbutamol, and a well-defined anodic peak was observed at ~600 mV with enhanced peak current in comparison to the bare electrode. Linear calibration plot using SWNT/EPPGE was obtained in the concentration range of 50 to 2500 ngml -1with sensitivity and detection limit of 2.15 nA/ngml -1and 4.31 ngml -1, respectively. The developed method has been successfully applied for the determination of salbutamol in commercial preparations and human body fluids. Fast analysis of salbutamol in human urine makes the proposed method of great interest for doping control purposes at the site of competitive games.

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          Most cited references42

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          New materials for electrochemical sensing VI: Carbon nanotubes

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            Investigation of modified basal plane pyrolytic graphite electrodes: definitive evidence for the electrocatalytic properties of the ends of carbon nanotubesElectronic supplementary information (ESI) available: the use of CNT-modified electrodes in electrochemistry, and SEM images of MWNTs before immobilisation and after modification of a basal plane pyrolytic graphite electrode. See http://www.rsc.org/suppdata/cc/b4/b406174h/

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              Bioavailability of Nickel in Single-Wall Carbon Nanotubes

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                Author and article information

                Journal
                International Journal of Electrochemistry
                International Journal of Electrochemistry
                Hindawi Limited
                2090-3537
                2011
                2011
                : 2011
                :
                : 1-8
                Article
                10.4061/2011/373498
                08a331c7-d458-4a05-9c40-d0a80fe6b0b7
                © 2011

                http://creativecommons.org/licenses/by/3.0/

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