A5037610464- Electrochemical Analysis and Applications
- Electrochemical sensors and biosensors
- Heavy metals in environment
- Conducting polymers and applications
- Analytical Chemistry and Sensors
- Pharmaceutical and Antibiotic Environmental Impacts
- Soil Carbon and Nitrogen Dynamics
- Soil and Unsaturated Flow
- Coal and Its By-products
- Mine drainage and remediation techniques
- Arsenic contamination and mitigation
- Clay minerals and soil interactions
- Mycorrhizal Fungi and Plant Interactions
- Landslides and related hazards
- Soil Geostatistics and Mapping
- Mining and Resource Management
- Sulfur Compounds in Biology
- Pesticide and Herbicide Environmental Studies
- Composting and Vermicomposting Techniques
- Geothermal Energy Systems and Applications
- Antibiotics Pharmacokinetics and Efficacy
- Adsorption and biosorption for pollutant removal
- Iron oxide chemistry and applications
- Organic Electronics and Photovoltaics
- Antioxidant Activity and Oxidative Stress
Pontificia Universidad Católica de Chile
2016-2025
Millennium Initiative for Collaborative Research on Bacterial Resistance
2014-2019
Universidad de Santiago de Chile
2000-2003
Different techniques have been developed for the remediation of Cu contaminated soils, being phytoremediation a sustainable and environmentally friendly strategy, but its use in mine tailings is scarce. Arbuscular mycorrhizal fungi (AMF) can decrease concentration plants by favouring stabilization this metal through different mechanisms such as production glomalin, immobilization fungal wall hyphae spores, storage vacuoles. Additionally, organic amendments promotes beneficial effects...
Abstract. A critical aspect of predicting soil organic carbon (SOC) concentrations is the lack available information; where information on characteristics available, it usually focused regions high agricultural interest. To date, in Chile, a large proportion SOC data have been collected areas intensive or forestry use; however, vast beyond these forms land use few no available. Here we present new database for country, which result an unprecedented national effort under framework Global Soil...
Polypyrrole was electro-synthetized by potentiodynamic and potentiostatic methods on AISI 316 stainless steel (SS) using lithium perchlorate as supporting electrolyte acetonitrile solvent to obtain the respective polymeric coating. One of most relevant characteristics this polymer is that its voltammetric response showed presence reversible p- n-doping/undoping processes. Moreover, nucleation growth mechanisms (NGM) were established i/t transients deconvolution recorded during...
In order to evaluate humic acid–ciprofloxacin adsorption, a new electrochemical method was tested and applied adsorption isotherm studies, which were well fitted by the Langmuir–Freundlich model.
Abstract A method was developed for microplate-based oxygen radicals absorbance capacity (ORAC) using pyrogallol red (PGR) as probe (ORAC-PGR). The evaluated linearity, precision, and accuracy. In addition, the antioxidant of commercial beverages, such wines, fruit juices, iced teas, measured. Linearity area under curve (AUC) versus Trolox® concentration plots [AUC = (845 ± 110) + (23 2) [Trolox, μM]; R 0.9961, n 19]. Analyses showed better precision accuracy at highest Trolox (40 μM) with...
Electrochemistry have produced important results as an alternative synthesis route for polymerization because offers several distinct advantages such process control, cheaper preparation procedures and instrumentation, also enables approach fundamental characterization. The mechanism conducting polymer electro-synthesis involves, at its early stages, oligomer formation. Therefore, in this work electrochemical techniques are used the characterization of aniline (ANI) o-anisidine (oANS)...
Abstract A novel application of fluorine‐doped tin oxide (FTO) electrodes is reported in the present work. To this end, captopril electrochemical oxidation mechanism on FTO at various pH and its determination pharmaceutical preparations was investigated. Captopril proceeds between 2.0 4.0. The study revealed that interferences for samples totally suppressed using these electrode materials. Voltammetric survey showed an anodic peak about 0.375 V (Ag|AgCl) oxidation, takes place through EC...
Poly(3,4-ethylenedioxythiophene), PEDOT, electro-obtention has been widely studied because of its variety applications. One most relevant electrochemical characteristics is ability p- and n-doping (an almost unexplored property thus far), consequently in the present survey potential use for mercury(II) extraction, based on process, was studied. To this end EDOT potentiostatically electro-polymerized steel (AISI 316, 6 cm2) as substrate employing lithium perchlorate supporting electrolyte...
Redox and acid base properties of soil humic substances were studied. Phenolic groups predominated over the carboxylic groups. The oxidation capacity acids (HA) show values from 1.7 2.2 molc kg-1 at pH 7.0 9.0, respectively. A relationship between redox activity both content was observed. formal potential () presented 1.50 V, demonstrating oxidizing nature studied HAs. Based on these results, HA Diguillin (D) considered for design an electrode in presence polypyrrole (PPy). Consequently, a...
Nanostructures of poly(2,2′:5′,2′′-terthiophene) have been synthesized using only electrochemical techniques. To this end, a porous silica film modified platinum disc was used as working electrode (Pt|(SiO2)n). The coating acts template so that the subsequent electro-polymerization occurs in their confined space pores, perpendicular to electrodic surface. current response obtained polymeric deposit is much greater than exhibited by solid massive polymer (generated under identical conditions...
Phytoremediation, an environmentally friendly and sustainable approach for addressing Cu-contaminated environments, remains underutilized in mine tailings. Arbuscular mycorrhizal fungi (AMF) play a vital role reducing Cu levels plants through various mechanisms, including glomalin stabilization, immobilization within fungal structures, enhancing plant tolerance to oxidative stress. Yeasts also contribute growth metal by producing phytohormones, solubilizing phosphates, generating...