Journal
ANALYTICAL LETTERS
Volume 47, Issue 5, Pages 763-777Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00032719.2013.855782
Keywords
Carbon paste electrode; Methimazole; Multiwall carbon nanotubes; Titanium dioxide nanoparticles
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Funding
- Islamic Azad University, Falavarjan Branch Research Council
- National Foundation for Iranian Elites
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A multiwall carbon nanotube titanium dioxide nanoparticle modified carbon paste electrode was used for direct determination of methimazole. The nanoparticles in the carbon paste increased the surface area of the electrode and improved the sensitivity by enhancing the peak current. The electrochemical behavior of methimazole on the modified electrode was investigated. Experimental variables such as pH and electrode composition were optimized. At the optimum pH 7.0 (universal buffer), the modified electrode had a linear dynamic range of 0.5 to 100.0mol L-1 (0.1-11.4ppm) with a limit of detection of 0.17mol L-1 . The application of the electrode for the determination of methimazole in pharmaceuticals and blood serum was investigated.
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