Trace determination of clenbuterol with an MWCNT-Nafion nanocomposite modified electrode

• DOI: 10.1007/s00604-007-0766-3
• Publication Date: 2007-06-06T16:57:55Z
• Authors: Ren-Xia Guo; Qin Xu; De-Yan Wang; Xiao-Ya Hu
• Keywords: Nafion; Clenbuterol; Linear range; Nanochemistry; Trace Amounts

A method for the determination of trace clenbuterol is described. Multi-walled carbon nanotubes (MWCNTs)-Nafion composite was used to modify the glassy carbon electrode (GCE). The modified electrode showed high sensitivity and good selectivity for clenbuterol detection. It offered a linear range of 1.0 × 10−9–1.0 × 10−6 mol · L−1 with a detection limit of 5.0 × 10−10 mol · L−1 in pH = 1.2 solution. The oxidation mechanism of clenbuterol on the electrode was also investigated.