A5086980952- Analytical chemistry methods development
- Microplastics and Plastic Pollution
- Analytical Chemistry and Chromatography
- Recycling and Waste Management Techniques
- Pesticide Residue Analysis and Safety
- Toxic Organic Pollutants Impact
- Electrochemical Analysis and Applications
- Water Quality Monitoring and Analysis
- E-Learning and Knowledge Management
- Environmental and Ecological Studies
- Marine and coastal ecosystems
- Mechanical Circulatory Support Devices
- Oceanographic and Atmospheric Processes
- Cultural Heritage Materials Analysis
- Educational Technology in Learning
- Conservation Techniques and Studies
- Transplantation: Methods and Outcomes
- Higher Education Teaching and Evaluation
- Maritime Navigation and Safety
- Engineering and Information Technology
- Cardiac Arrest and Resuscitation
- biodegradable polymer synthesis and properties
- Renal Transplantation Outcomes and Treatments
- Identification and Quantification in Food
- Effects and risks of endocrine disrupting chemicals
Universidad de Las Palmas de Gran Canaria
2008-2024
Emory University
2005-2020
Universidad Autónoma de Nuevo León
2017
Oceanic Platform of the Canary Islands
2013
Institut de Ciències del Mar
2012
Istituto di Scienze Marine del Consiglio Nazionale delle Ricerche
2011
Universidad Complutense de Madrid
2006-2007
Rutgers New Jersey Medical School
2006
Rutgers, The State University of New Jersey
2006
National University of General San Martín
2005
Allograft coronary artery disease (CAD) is the major determinant of long-term survival following heart transplantation (HTx). In a group 210 transplant recipients, we diagnosed CAD in 54 (27.1%) by angiography, postmortem examination or transplanted at time retransplantation. Retrospective analysis potential risk factors for development was performed both immunological (rejection pattern, immunosuppressive therapy, cytomegalovirus [CMV] infection), and nonimmunological (hyperlipidemia,...
Marine microplastics (MPs) are exposed to environmental factors, which produce aging, weathering, surface cracking, yellowing, fragmentation and degradation, thereby changing the structure behavior of plastic. This degradation also has an influence on adsorption persistent organic pollutants over microplastic surface, leading increased concentration with aging. The state affects color time; this is called can be quantified using Yellowness Index (YI). Weathering cracking related identified...
Microplastic (MP) present at the water column until least 1150 m depth • MP transported by oceanic dynamic as passive drifters horizontally
The presence of different types microplastics (MPs) in the Atlantic Ocean has been well-documented, with data collected from Canary Islands indicating high concentrations MPs at four beaches ( hot spots ). However, critical gaps persist regarding abundance diverse open ocean regions, varying depths, and their transport behavior origin. This study aims to evaluate, for first time, large-scale (>100 km) mesoscale (10-100 dynamic processes resulting region. On one hand, this investigates...
In this work, the microplastic content of sediments collected in July 2020 between 5 and 7 m depth was studied four locations La Palma island (Canary Islands, Spain). At each sampling location, three samples were taken parallel to shoreline. The corer every 2.5 cm after digestion with a H2O2 solution followed by flotation saturated NaCl solution. Visualization final filtrates under stereomicroscope revealed that all sediment evaluated contained mostly microfibers (98.3%) which mainly...
Plastic pollution has become a significant issue in marine ecosystems, with microplastics posing unique challenges due to their size and widespread dispersal. These particles tend get accumulated oceanic structures like eddies, which often act as attractors, where microplastic distribution is shaped by complex circulation patterns. We study the concentration of within two distinct eddies downstream Canary Islands, an anticyclonic cyclonic eddy sampled during recent oceanographic campaigns...
Marine ecosystems pollution by microplastics (MPs) is a global problem of special concern. The present study examines the prevalence and distribution MPs cellulosic particles in sublittoral coastal sediments Canary Islands archipelago (Spain). At twenty-six different locations alongside seven islands, three samples were taken parallel to shoreline between 1 10 m depth (n = 78). Sediment primarily digested with H
Microplastics have the capability of retaining contaminants on their surfaces, increasing persistence, preconcentrating them, and acting as transport vectors. Nevertheless, determination these compounds in plastic matrices poses several analytical issues challenges, including many methods only determining extractable pollutants fractions, repeatability issues, etc. In this sense, it is primordial to evaluate effect critical parameters that allow obtain a quantitative extraction target...
Solid phase extraction (SPE) is a consolidated technique for determining pollutants in seawater samples. The current tendency to miniaturise systems that extract and determine the environment, reducing use of organic solvents, while maintaining quality preconcentration. On other hand, there need develop new can be fitted situ continual monitoring buoys, especially marine environment. This work has developed first model low-pressure micro-SPE (m-SPE) persistent (POPs) simply applied system...
A method for the determination of organochlorine pesticides in soil samples combining microwave assisted micellar extraction (MAME) with solid-phase microextraction (SPME) and high-performance liquid chromatography−UV has been developed. mixture two nonionic surfactants (polyoxyethylene 10 lauryl ether polyoxyethylene stearyl ether) was used from agricultural soils, different types SPME fibers were compared. The parameters which affect efficiency procedure optimized such as time temperature....
D. Vega Morenoa, Z. Sosa Ferreraa, J. Santana RodrÍgueza, E. Pocurull Aixalàb & F. Borrull BallarÍnb a University Las Palmas de Gran Canaria , Canaria, Spain b Rovira i Virgili Tarragona,
An analytical method combining microwave assisted micellar extraction (MAME) followed by solid-phase microextraction (SPME) and high-performance liquid chromatography–ultraviolet chromatography with UV detection–detection is implemented for the determination of six organochlorine pesticides in different mud samples collected on Gran Canaria Island (Spain). This allows detection limits to be reduced respect MAME also enables target determined complex matrices due clean-up procedure. Several...