1. Laboratory of Electrochemical SensorsDepartment of Chemistry, Federal University of Paraná CEP 81.531-980 Curitiba, Paraná Brazil
2. Sensors and Biosensors GroupDepartment of Chemistry, Universitat Autonoma de Barcelona, Bellaterra Barcelona Spain
3. Laboratory of Process and Environmental Projects, Department of ChemistryFederal University of Paraná CEP 81.531-980 Curitiba, Paraná Brazil
4. National Institute of Science and Technology of Energy and Environment (INCT E&A/CNPq) Brazil