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Víctor Manuel León

Víctor Manuel León
Instituto Español de Oceanografia (IEO-CSIC)

PhD in Chemistry

About

97
Publications
27,249
Reads
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2,618
Citations
Introduction
I am currently a environmental scientist at the Instituto Español de Oceanografía, and I have participated in different Spanish and European research projects in relation with the characterization of the presence, distribution, behavior and impact of organic pollutants in the marine environment. I am also participating in the Spanish biomonitoring program of organic pollutants in the Mediterranean area and currently working on PLASMED project (https://www.plas-med.es).
Additional affiliations
December 2006 - present
December 2002 - December 2006
University of Alicante
Position
  • Ayudante Doctor
January 2002 - December 2006
Universidad de Alicante
Education
January 1997 - July 2001
Universidad de Cádiz
Field of study
  • Reactividad y mecanismos de transporte de tensioactivos en sistemas litorales
October 1990 - June 1995
Universidad de Cádiz
Field of study

Publications

Publications (97)
Article
Full-text available
The effects of three relevant organic pollutants: chlorpyrifos (CPF), a widely used insecticide, triphenyl phosphate (TPHP), employed as flame retardant and as plastic additive, and bisphenol A (BPA), used primarily as plastic additive, on sea urchin ( Paracentrotus lividus ) larvae, were investigated. Experiments consisted of exposing sea urchin f...
Article
Microplastics (MP) are contaminants of concern per se, and also by their capacity to sorb contaminants and to act as vehicles for their transfer into marine organisms. Still, the role of MP as vehicles for contaminants and their associated toxicological effects have been poorly investigated. In this work we have compared the role of MP (high densit...
Article
Full-text available
In this work a suspect-screening approach was employed to assess the polymers and plastic additives of micro(nano)plastics (NPL/MPLs) of size ranges from the nm range to 20 μm present in seawater from the top 5 cm of the Mar Menor lagoon during two sampling campaigns (summer and winter), as well of other potentially adsorbed compounds onto the plas...
Article
The seasonal bioaccumulation of trace metals, polycyclic aromatic hydrocarbons (PAHs), polychlorinated bi-phenyls (PCBs) and organochlorinated pesticides (OCPs) in sea snail (Hexaplex trunculus) and sea cucumber (Holothuria polii) from Mar Menor lagoon were characterised. The highest concentrations of p,p'-DDE were detected in the central and south...
Article
The spatial distribution and temporal trends of trace metals (i.e. Cd, Cu, Hg, Pb and Zn) and a metalloid (i.e. As) along the Spanish Mediterranean coast from 1993 to 2013 are presented with a new estimation of their background levels monitored using wild mussels. Over a 20 years period, yearly mussel monitoring was undertaken with a rigorous field...
Article
In this work two sensitive areas of the Spanish coast located in the Atlantic (Ria de Vigo) and Mediterranean (Mar Menor lagoon) have been studied regarding their contamination by phthalates, organotin compounds and per-polyfluoroalkyl substances (seawater and sediments) in two different campaigns (spring and autumn in 2015). PFAS and OTCs were det...
Article
Microplastics are gaining worldwide attention due to their omnipresence. The marine environment is one of the most affected systems; especially the sediment compartment. Microplastic separation from the sediment matrix is the first step to evaluate its abundance and availability. Nevertheless, a lack of consistency in extraction protocols is a fact...
Article
The distribution of per- and polyfluoroalkyl substances (PFAS), alkylphenols, organotin compounds, phthalates, alkylated polycyclic aromatic hydrocarbons, current-use pesticides (CUPs) and personal care products (PCPs) was characterized in 29 surface sediments from two Spanish Iberian continental shelf areas (14 on the Atlantic and 15 on the Medite...
Chapter
Full-text available
El presente artículo sintetiza la situación de la laguna costera del Mar Menor en relación con los nutrientes, centrándose especialmente en el periodo anterior a la DANA de septiembre de 2019 y en la evolución de dicha situación tras la DANA, con particular atención al episodio de mortandad masiva ocurrido a mediados de octubre de 2019. Se presenta...
Article
Full-text available
The so-called marine litter, and in particular microplastics (MPs) and nanoplastics (NPs), are ubiquitously distributed and recognised as an emerging risk for the environment and human health. It is known that marine environments are one of the most impacted areas and among them; coastal zones are the most contaminated ones. They are subjected to p...
Chapter
There is a great concern that physical and chemical properties of microplastics (MPs) may facilitate the sorption of toxic metals and organic contaminants to the particle surface, serving as a enriched vector (Trojan horse) of contaminants to marine organisms following ingestion [1].
Article
The occurrence of bioactive compounds and contaminant-associated effects was assessed by means of in vivo and in vitro assays using different extractable fractions of surface sediments from a contaminated coastal lagoon (Mar Menor, SE Spain). Sediment elutriates and clean seawater, previously exposed to whole sediment, were used for assessing the i...
Technical Report
Full-text available
A severe degradation of Mar Menor has been caused by the eutrophication process due to the excess of nutrients, degradation that the lagoon has been suffering since the 2016 eutrophic event and that has been aggravated by the nutrient and sediments contained in the runoff caused by the subtropical jet stream of September 2019
Article
Full-text available
Microplastics (MPs) are widely recognised as a contaminant of emerging concern in the marine environment. This work provides original data of the presence of MPs in coastal sediments along the Spanish Mediterranean continental shelf. Ten surface sediment samples were collected in order to document baseline microplastic distribution from Algeciras t...
Technical Report
Full-text available
Microplastic pollution is presently considered a high concern topic by scientists, policy makers, governmental bodies, non-governmental organizations and the general public. Microplastics are highly widespread in all environmental compartments (e.g. air, water, sediments and biota) and increasing empirical evidence points towards potential negative...
Article
In this study the role of plastic debris as a pollution vector has been evaluated by determining the concentrations of hydrophobic organic contaminants in polymers from three Western Mediterranean coastal areas as well as their potential transfer to seawater. Plastic debris was sampled at three Iberian Peninsula Southeastern beaches, each affected...
Technical Report
Full-text available
Tras la Evaluación Inicial de esta Demarcación en 2012 se establecieron los objetivos ambientales necesarios para alcanzar un Buen Estado Ambiental (BEA) y se evaluaron las concentraciones de contaminantes químicos en el medio marino así como su capacidad para producir efectos biológicos significativos para esta Demarcación Marina. Con la obtención...
Conference Paper
Full-text available
Net4Sea es una red nacional interdisciplinar que nace con el objetivo de abordar la creciente preocupación social y de la administraciónpública la situación de los contaminantes de interés emergente en diferentes compartimentos de los ecosistemas marinos y redes alimentarias, además de su impacto en la salud humana. El nuevo término llamado “Toxico...
Article
This study assessed the environmental risk on coastal ecosystems posed by three phenolic compounds of special environmental and human health concern used in plastics and household products: bisphenol A (BPA), triclosan (TCS) and 4-nonylphenol (4-NP). These three chemicals are among the organic contaminants most frequently detected in wastewater. Th...
Poster
Full-text available
Plastic particles of small size (microplastics) produced in small size to be used in different applications (primary microplastics) or resulting from the fragmentation of larger items (secondary microplastics) are colonizing marine ecosystems. Depending on the type of polymers, plastic particles can vary their position in the water column. Low-dens...
Article
The chemical toxicity of virgin fluorescent polystyrene micro- spheres (Ø 6 mm) and virgin high density polyethylene fluff (Ø 0e80 mm) on sea urchin gametes and embryos has been demon- strated. The leachates of these two polymeric materials caused a higher toxicity to sea urchin embryos than virgin and aged mate- rials themselves. The presence of s...
Article
The levels and trends of organochlorine contaminants were determined along the Spanish Mediterranean coast from 2000 to 2013 using mussel, Mytilus galloprovincialis, as bioindicator species. The highest levels of PCBs and DDTs were found at industrial and urban locations, and at areas under the influence of the mouth of major rivers. Dieldrin and t...
Article
Full-text available
The spatial and seasonal distributions of current-use pesticides (CUPs), including triazines, organophosphorus pesticides, and tributylphosphate, were characterized in surface sediments from the Mar Menor lagoon during 2009 and 2010. The impact of two flash flood events on the input of CUPs and their distribution in the lagoon were also assessed. T...
Article
Sediments from the Rias of A Coruña, Ferrol, Betanzos and Ares (n = 26) and the Bay of Santander (n = 11) were sampled in July 2012. The concentration of organic contaminants in sediment elutriates (CBs, PAHs, pesticides and personal care products) and sea urchin (Paracentrotus lividus) embryotoxicity were assessed. Relevant concentrations of organ...
Article
Full-text available
The influence of flash flood events on the input and distribution of polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and organochlorinated pesticides (OCPs) in surface sediments from the Mar Menor lagoon were characterized in this study. These contaminants were analyzed in surface water samples collected during two flash...
Article
The seasonal variations in the occurrence and distribution of pharmaceuticals were evaluated in seawater and sediment of Mar Menor lagoon from spring 2010 to winter 2011. A total of 20 pharmaceuticals in seawater and 14 in sediments were found at concentrations from low ngL(-)(1) up to 168ngL(-)(1) (azithromycin) in seawater and from low ngg(-1) up...
Article
In this work we have monitored the seasonal inputs, occurrence and distribution of the world's most widely used surfactants (linear alkylbenzene sulfonates, LAS, nonylphenol polyethoxylates, NPEOs, and alcohol polyethoxylates, AEOs) in Mar Menor lagoon (SE Spain) and its main tributary (El Albujón) for the first time. Concentration of target compou...
Presentation
Full-text available
Presentation of the IMPACTA PROJECT in CICTA congress 2015. This project was funded by Spanish Ministry of Economy and by EU (CTM2013-48194-C3)
Technical Report
Tras la Evaluación Inicial de esta Demarcación en 2012 se establecieron los objetivos ambientales necesarios para alcanzar un Buen Estado Ambiental (BEA) y se evaluaron las concentraciones de contaminantes químicos en el medio marino así como su capacidad para producir efectos biológicos significativos para esta Demarcación Marina. Con la obtención...
Poster
Poster presented in the SETAC (Society of Environmental Toxicology and Chemistry) Europe 24th Annual Meeting in session ”Marine and coastal ecotoxicology and risk assessment”
Article
Full-text available
The sorption of linear alkylbenzene sulfonates (LAS) and of their main biodegradation intermediates, sulfophenylcarboxylic acids (SPC) has been characterized in marine sediments. The required equilibrium time for undecylbenzene sulfonate (C 11 LAS) sorption is 12 h, and 24 h for sulfophenyl undecanoic acid (C 11 SPC). C 11 LAS sorption decrease...
Article
The seasonal distribution of polycyclic aromatic hydrocarbons, polychlorinated biphenyls, organochlorine pesticides, organophosphorus pesticides, triazines and other organic pollutants in surface seawater from the Mar Menor lagoon (SE Spain) was characterized from spring 2009 to winter 2010 by stir bar sorptive extraction and thermal desorption fol...
Article
The Mar Menor is a coastal lagoon threatened by the development of intensive agriculture in the surrounding areas. Large amounts of pesticides from these areas are discharged into El Albujón, a permanent watercourse flowing into the lagoon. We have used a multi-biomarker approach to assess the biological effects of agricultural pollution on a bival...
Article
The bioaccumulation of polycyclic aromatic hydrocarbons (PAHs), organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) was characterized in cockle, oyster and noble pen shell from nine areas in the Mar Menor lagoon with different hydrodynamic and pollutant sources. Biota, sediment and water samples were simultaneously collected in th...
Article
Alcohol polyethoxylates (AEOs) are the most commercially important type of nonionic surfactants, used in a wide variety of products such as household cleaning detergents, industrial cleaners, textiles, adjuvants in pesticides, wetting and dispersing agents, and emulsifiers. Our main objective in this work was to develop a methodology for the extrac...
Article
A biological screening was performed to establish the total exposure to estrogenic compounds of red mullet (Mullus barbatus) collected at several sites along the Spanish Mediterranean coast by testing male fish bile extracts using the in vitro ER-LUC reporter gene assay. In addition, major metabolites were identified and measurements of OH-PAHs (1-...
Presentation
Full-text available
Triptych of the IMPACTA project funded by Spanish Ministry of Economy and by EU (CTM2013-48194-C3)
Article
Full-text available
Polycyclic aromatic hydrocarbons (PAHs) have been determined in blue mussels (Mytilus galloprovincialis) from several Iberian Mediterranean coastal areas through the implementation of a monitoring programme from Spain in the framework of the Mediterranean Pollution Programme (MED POL). The selected areas correspond to sites with differing degrees o...
Article
A suite of general physiological indicators and hepatic biomarker responses were determined in red mullet (Mullus barbatus) from priority pollution areas of W Mediterranean Sea, including the highly metal polluted area of Portmán (Cartagena, SE Spain). Concentrations of metals and persistent organic pollutants in fish muscle tissue and sediment sam...
Article
The transport and reaction processes of linear alkylbenzene sulfonate (LAS) were characterised in columns of agricultural soil with a constant inflow of irrigation water. A pulse input of commercial LAS was performed with different mixtures of soil and sea sand (0/100%, 25/75% and 50/50%) and a continuous water flow of approximately 0.5mL/min. LAS...
Conference Paper
Full-text available
Laboratory column experiments aids in the understanding of hydrogeochemistry dynamics of different linear alkylbenzene sulfonate homologues when they interact with different sand/soil proportions. Previously it was necessary to characterize the soil columns with a tracer. In this paper, the method to obtain breakthrough curves for the conductivity...
Article
An analytical chemical method has been developed for the simultaneous determination of 32 different pharmaceuticals in soils and sediments. The pharmaceuticals cover a varity of different compound groups. Soil samples were extracted with different solvents with the help of pressurized-liquid extraction (PLE) followed by clean-up using a solid-phase...
Presentation
Full-text available
In the past twelve years, chemical monitoring surveys in Spanish Mediterranean coastal waters have evolved from the use of native mussels to an integrated sampling of native and caged mussels, fish (red mullet) and sediments. In addition, the application of biological effect measurements (using biomarkers and bioassays) in the same matrices, is bei...
Conference Paper
Full-text available
In the past twelve years, chemical monitoring surveys in Spanish Mediterranean coastal waters have evolved from the use of native mussels to an integrated sampling of native and caged mussels, fish (red mullet) and sediments. In addition, the application of biological effect measurements (using biomarkers and bioassays) in the same matrices, is bei...
Article
The extent and kinetics of the primary biodegradation have been characterized for the most commonly-used surfactants, employing four homologues with the same alkyl chain: dodecyl ethoxy sulfate (C(12)AES), sodium dodecyl sulfate (SDS), dodecyl alcohol ethoxylate (C(12)AEO) and dodecyl benzenesulfonate (C(12)LAS). A brief acclimatization period has...