Carbon nanotubes modified with SnO2 rods for levofloxacin detection

Author(s)

Vivian Cesarino ^[1] ; Ivana Cesarino ^[2] ; Fernando C. Moraes ^[2] ; Sergio A. S. Machado ^[2] ; Lucia H. Mascaro ^[3]

Affiliation

^[1] Univ Sao Paulo, Escola Engn Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil

^[2] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil

^[3] Univ Fed Sao Carlos, Dept Quim, BR-13565905 Sao Carlos, SP - Brazil

• Document type: Journal article
• Source: Journal of the Brazilian Chemical Society; v. 25, n. 3, p. 502-508, 2014-03-00.

Abstract

A new sensor based on multi-walled carbon nanotubes modified with SnO2 rods for the electrochemical determination of levofloxacin has been investigated. The morphology, the structure, and the electrochemical performance of the composite electrode were characterised by scanning electron microscopy, energy dispersive X-ray spectroscopy, and cyclic voltammetry, respectively. Differential pulse voltammetry in phosphate buffer solution at pH 6.0, allowed the application of a method to determine levofloxacin levels in a range of 1.0-9.9 µmol L-1, with a limit of detection calculated at 0.2 µmol L-1 (72.0 mg L-1). (AU)

• FAPESP's process: 12/19633-0 - Electrochemical Device Integrated with Carbon Nanotubes and Metal Nanoparticles for Analysis of Antibiotics in Wastewater
• Grantee: Ivana Cesarino
• Support Opportunities: Scholarships in Brazil - Post-Doctoral