Browsing by Author "Valdebenito, Javier"
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- 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.
- ItemSolvent-less method for efficient photocatalytic alpha-Fe2O3 nanoparticles using macromolecular polymeric precursors(2016) Diaz, Carlos; Barrientos, Lorena; Carrillo, Daniel; Valdebenito, Javier; Valenzuela, María L.; Allende, Patricio; Geaney, Hugh; O'Dwyer, Colm