A5070808976- Microfluidic and Capillary Electrophoresis Applications
- Biosensors and Analytical Detection
- Electrochemical Analysis and Applications
- Microfluidic and Bio-sensing Technologies
- Analytical chemistry methods development
- Science and Education Research
- Insect and Pesticide Research
- Pesticide Residue Analysis and Safety
- Gold and Silver Nanoparticles Synthesis and Applications
- Analytical Chemistry and Chromatography
- Wireless Body Area Networks
- Insect Pest Control Strategies
- Adsorption, diffusion, and thermodynamic properties of materials
- Mercury impact and mitigation studies
- Business and Management Studies
- Science Education and Pedagogy
- Isotope Analysis in Ecology
- Mass Spectrometry Techniques and Applications
- Identification and Quantification in Food
- Extraction and Separation Processes
- Education and Digital Technologies
- Quantum Dots Synthesis And Properties
- Electromagnetic Fields and Biological Effects
- Water Quality Monitoring and Analysis
- Heavy metals in environment
Flemish Institute for Technological Research
2023-2024
University of Córdoba
2022-2023
University of Castilla-La Mancha
2016-2021
Instituto de Investigación en Recursos Cinegéticos
2018-2021
Capillary electrophoresis (CE) is presented as a technique for the separation of polystyrene nanoparticles (NPs, particle diameters ranging from 30 to 300 nm) through bare fused silica capillary and ultraviolet detection. The proposed strategy was also assessed other types nanoplastics, finding that stronger alkaline conditions, with an ammonium hydroxide buffer (7.5%, pH = 11.9), enabled poly(methyl methacrylate), polypropylene, polyethylene NP first time by means CE below 200 nm. Particle...
A simple and rapid microextraction procedure is reported on the use of ionic liquid in combination with magnetic nanocellulose hybrid nanoparticles. The ultrasound-assisted applicable to selective preconcentration neonicotinoid insecticides from milk samples, prior being analysed by chromatography-mass spectrometry. extraction uses small volume organic solvents (<1 mL), there no need for centrifugation. In experimental approach was quickly disrupted an ultrasonic probe dispersed samples a...
A method was developed for the determination of total titanium in food and supplements by inductively coupled plasma mass spectrometry (ICP-MS) after microwave-assisted acid digestion samples. Five supplements, including one certified reference material, 15 products were used development. Key factors affecting analytical results, such as composition mixture sample bias from spectral interferences on different isotopes, investigated. Resolution achieved ICP-MS/MS with ammonia adduct formation...
Abstract It is described a simple, rapid and efficient methodology to characterise separate gold nanoprisms nanooctahedra by capillary electrophoresis. This technique suitable distinguish between morphologies it can be used as powerful separation tool after customised synthesis of both structures. was carried out amending two parameters, temperature pH, sharp decrease found in nanotriangles when increased from 70 up 95°C. However, the performed at given temperature, an increase pH did not...
Aim: The preparation of magnetic multi-walled carbon nanotube poly(styrene-co-divinylbenzene) for propranolol solid-phase extraction is described. Materials & methods: A study comparing adsorption and desorption was performed with only nanotubes, different without nanotubes. Enantiomeric separation took place by cyclodextrin-modified capillary electrophoresis the method validated in spiked human urine samples. Results: Recovery values raised when styrene/divinylbenzene millimoles ratio...
High-performance-ion mobility spectrometry (HPIMS) has been employed for the first time in analysis of olive oil samples after a simple liquid-liquid extraction procedure. The HPIMS-based methodology herein developed is user friendly, fast (30 s per analysis) and inexpensive. Moreover, solvent consumption minimal, thus complying with principles green chemistry. potential proposed approach combination multivariate evaluated classification according to their organoleptic quality: extra virgin...
R. Ramirez-Vazquez1, M.I. Martins2, I. Escobar1, A. Beléndez3, J. Gonzalez-Rubio1, C. Adelantado4, E. Arribas1 1University of Castilla-La Mancha (SPAIN) 2Pontifícia Universidade Católica de Minas Gerais (BRAZIL) 3University Alicante 4Copra company limited
M.I. Martins1, R. Ramirez-Vazquez2, G.C.A. Viana3, K. I. Escobar2, A. Beléndez4, J. Gonzalez-Rubio2, C. Adelantado5, E. Arribas2 1Pontifícia Universidade Católica de Minas Gerais (BRAZIL) 2University of Castilla-La Mancha (SPAIN) 3Universidade do Estado 4University Alicante 5Copra company limited
A new and simple methodology has been developed on the use of dynamic light scattering for sizing silica nanoparticles detecting their presence or absence in several food samples, namely fruit juices sweeteners. Size confirmation four nanosilica standards (20, 50, 80 100 nm) was performed with an error percentage lower than 3.5% low concentration levels (a few mg L−1) were detected by scattering, demonstrating excellent sensitivity this technique characterizing these small present at values....
R. Ramirez-Vazquez 1, M.I. Martins2, I. Escobar A. Martinez-Plaza1, C. Adelantado 3, Beléndez 4, E. Arribas 1 1University of Castilla-La Mancha (SPAIN) 2Pontifícia Universidade Católica de Minas Gerais (BRAZIL) 3Copra SL, Barcelona 4University Alicante
Abstract In this work, we present results for measurements of personal exposure to Radiofrequency electromagnetic Fields (RF-EMF) from 2.4 GHz Wi-Fi and 5.8 frequency bands while travelling by airplane. The flight was taken a researcher it departed Barajas Adolfo Suarez Airport in Madrid (Spain) arrived Benito Juárez International (Mexico City – Mexico), on the 20 th June 2021. were carried out using two EME SPY 140 exposimeters. Results indicate that levels change at any moment. Values are...
M.I. Martins1, R. Ramirez-Vazquez 2, C.E. Mendes1, I. Escobar C. Adelantado 3, A. Beléndez 4, E. Arribas 2 1Pontifícia Universidade Católica de Minas Gerais (BRAZIL) 2University of Castilla-La Mancha (SPAIN) 3Copra SL, Barcelona 4University Alicante
R. Ramirez-Vazquez 1, M.I. Martins2, C.E. Mendes2, I. Escobar C. Adelantado 3, M.D. Olaya1, T. Franco4, A. Beléndez 5, E. Arribas 1 1University of Castilla-La Mancha (SPAIN) 2Pontifícia Universidade Católica de Minas Gerais (BRAZIL) 3Copra SL, Barcelona 4National Polytechnic Institute Mexico (MEXICO) 5University Alicante