Browsing by Author "Calfuman, Karla"
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- ItemCharacterization of PVC-Tetraruthenated Metalloporphyrins Modified Electrodes: Application as Electrocatalyst in the Nitrite Reduction(2011) Calfuman, Karla; Dreyse, Paulina A.; Garcia, Camilo; Aguirre, Maria J.; Beltran, Tomas; Guillamon, Eva; Sorribes, Ivan; Vicent, Cristian; Llusar, Rosa; Isaacs Casanova, Mauricio
- ItemElectrocatalytic reduction of nitrite on tetraruthenated metalloporphyrins/Nafion glassy carbon modified electrode(2011) Calfuman, Karla; Aguirre, Maria Jesus; Canete-Rosales, Paulina; Bollo, Soledad; Llusar, Rosa; Isaacs Casanova, Mauricio
- ItemElectrochemical reduction of nitrite at poly-[Ru(5-NO2-phen)(2)Cl] tetrapyridylporphyrin glassy carbon modified electrode(2011) Dreyse, Paulina A.; Isaacs Casanova, Mauricio; Calfuman, Karla; Caceres, Cesar; Aliaga, Alvaro; Aguirre, Maria Jesus; Villagra, Diego
- ItemElectrochemical reduction of nitrite at polymeric Co(II)-tetra-3-amino-phenyl-porphyrin modified electrode(2007) San Martin, Cristian; Dreyse, Paulina A.; Garcia, Camilo; Calfuman, Karla; Villagra, Diego; Isaacs Casanova, Mauricio
- ItemElectrochemical Reduction of S(IV) Compounds in Water-Ethanol Solutions at Nafion/Tetraruthenated Porphyrins Glassy Carbon Modified Electrodes(2010) Calfuman, Karla; García, Macarena; Aguirre, Maria. J.; Matsuhiro, Betty; Mendoza, Leonora; Isaacs Casanova, Mauricio
- ItemEnhanced Hydrogen Peroxide Sensing Based on Tetraruthenated Porphyrins/Nafion/Glassy Carbon-modified Electrodes via Incorporating of Carbon Nanotubes(2015) Calfuman, Karla; Quezada, Diego; Isaacs Casanova, Mauricio; Bollo, Soledad
- ItemQuick and Easy Modification of Glassy Carbon Electrodes with Ionic Liquid and Tetraruthenated Porphyrins for the Electrochemical Determination of Atrazine in Water(2019) Calfuman, Karla; Honores, Jessica; Isaacs, Mauricio; Quezada, Diego; Valdebenito, Javier; Urzua, MarcelaAtrazine is a pesticide used to control broadleaf weeds, however its wide distribution and its high persistence in the soil and in surface waters has resulted in a public and environmental health problem. Present results shows the design, construction and characterization of glassy carbon electrodes modified with tetrarutenated metalloporphyrin (M=Ni (II) and Zn (II)) and 1-butyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide, BMIMNTF2. The modification was reproducible and sensitive for the electrochemical detection of atrazine in neutral media. The detection limit was 230 nM when using GC/BMIMNTF2/ZnTRP and 540 nM with GC/BMIMNTF2/NiTRP, meaning that his methodology can be a feasible and inexpensive way to detect atrazine in trace levels.