A5056912535- Electrochemical Analysis and Applications
- Arsenic contamination and mitigation
- Advanced biosensing and bioanalysis techniques
- Electrocatalysts for Energy Conversion
- Molecular Junctions and Nanostructures
- Biosensors and Analytical Detection
- Healthcare Facilities Design and Sustainability
- Analytical Chemistry and Sensors
- Analytical chemistry methods development
- Heavy Metal Exposure and Toxicity
University of New Mexico
2020-2024
This study investigates the use of DC sputtering, physical vapor deposition as a facile method for creating ultralow loading, Au/C electrodes in detection As (III) water. The sputtered nanofilm on carbon papers, substantially reduces amount Au consumed per electrode, <10 μg cm−2, compared to wire, foil, or screen-printed electrodes. Linear stripping voltammetry (LSV) was chosen analytical simplicity and ease automation. Electrodes using nanoparticles supported Vulcan XC 72 R were also...
This paper summarizes the overall results of VIII World Engineering Education Forum, X Global Deans Council, XIV Student held in November 2018 Albuquerque, NM USA, and discusses emerging global collaboration for Peace (PEng) education. The theme this first ever conference on was tune with events developments. Participants were a confluence practitioners, researchers, policy makers educators from all over world, encompassing academia, multinational industry, US national labs multilateral...
Electrochemical stripping voltammetry electroanalysis sensitivity and selectivity are oftentimes limited by wide variance in analyte electrode surface adsorption desorption energies. The use of highly oriented Au(111) single crystal thin film surfaces is shown to decrease this improve detection for arsenic (As) water. Cyclic linear (LSV) analysis on Au polyoriented demonstrated that As deposition oxidation a complex surface-structure-dependent process. An electrochemical quartz microbalance...
The ability to detect trace concentrations of arsenite, As (III), in real water solutions is impacted by co-contamination other metals and co-occurring ions. presence copper ions, specifically Cu (II), the most concerning common co-contaminant natural waters due close proximity (II) oxidation potential that (III). use well-oriented ultraflat Au(111) thin film electrodes provided increased peak separation sensitivity for electrochemical deposition (III) 0.5 M sulfuric acid compared an Au wire...
The electrochemical behavior of arsenic on gold (Au) electrodes surfaces is great interest as As well-recognized a highly toxic and relatively ubiquitous ground water species. United States Environmental Protection Agency (USEPA) World Health Organization (WHO) drinking standards for are 10 PPB, or 𝜇g L -1 [1]. These minute ion concentrations necessitate the use analytical methods with high sensitivity low susceptibility to cross interferences. Electrochemical stripping voltammetry...
There is a current need for an inline arsenic sensing system that can continuously sample aquifer water quality well drilling and ground monitoring applications. Concentrations of oxyanions above 10 μg/L in drinking are considered dangerous by the World Health Organization [1]. Levels this daily consumption lead to renal toxicity condition known as Arsenicosis, which produces lesions on skin. We currently developing Au thin film, As stripping voltammetry flow cell meet challenging need. Our...