Vertical distribution of PAHs in marine sediments (particulate fraction and interstitial water) from eight Iberian Mediterranean areas

Polycyclic aromatic hydrocarbons (PAHs) have been determined in sediment cores from eight Iberian Mediterranean coastal areas (Barcelona, Tarragona, Ebro Delta, Valencia, Castellón, Cartagena, Almería y Málaga), considering both interstitial water and solid fraction. Three sediment cores were taken in three different sampling sites per area by using a box corer. Cores were cut into 1-cm-thick sections between 0 and 18-cm depth, interstitial water was obtained by centrifugation and samples from every site were pooled. Fourteen polycyclic aromatic hydrocarbons (fluorene, phenanthrene, anthracene, fluoranthene, pyrene, benz[a]anthracene, crysene, benzo[e]pyrene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, benzo[g,h,i]perylene, dibenzo[a,h]anthracene and indeno[1,2,3-c,d]pyrene) were determined in interstitial water by stir bar sorptive extraction coupled to GC/MS and solid fraction by Soxhlet extraction and HPLC with fluorescence detection. As result of PAHs hydrofobicity, their concentrations were several magnitude order higher in sediment (solid phase) than interstitial water. Total PAH concentration in sediment varied from 1 to 1321 g•kg-1 d.w and from 4.9 to 274 ng•L-1 in interstitial water. Vertical PAHs distributions in sediments were homogeneous in some areas, however, sharp concentration decreases were observed at deeper layers from some sampling sites. However, their maximum concentrations in interstitial water were found mainly in upper or in deeper layers, depending on the specific characteristics of the area and sediments.This work was supported by the Spanish Ministry of Environment (2-ESMARME and 2-2-ESMARME projects), the Spanish Inter-Ministerial Science and Technology Commission through the ‘IMPACTA’ (CICYT, CTM2013-48194-C3-1-R) project and the European Union through the European Regional Development Fund (ERDF)

Sea snail (Hexaplex trunculus) and sea cucumber (Holothuria polii) as potential sentinel species for organic pollutants and trace metals in coastal ecosystems

Postprin

Levels and spatial distribution of organochlorinated compounds and polycyclic aromatic hydrocarbons in fishes from a Mediterranean coastal lagoon

The seasonal input and distribution of organic contaminants in the Mar Menor lagoon have been recently characterized in seawater and sediments, showing the significant impact of flash flood events. Mar Menor is a hypersaline (42-47 psu) coastal lagoon located in the Cartagena Field area at the South East of Spain subjected mainly to intensive agriculture, seasonal tourism and recreational activities. The bioaccumulation of polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and organochlorinated pesticides (OCPs) has been also determined in bivalves, but no information was available about their accumulation in fishes. In this study the concentrations of PAHs, PCBs and OCPs in golden grey mullet (Liza aurata) and red mullet (Mullus barbatus) muscle were determined. Their spatial distribution throughout the Mar Menor lagoon was characterized considering 9 sampling areas and two different sampling periods, spring and autumn in 2010 for golden grey mullet and only one (autumn) for red mullet. PAHs and organochlorinated pollutants were extracted using specific Soxhlet procedures. After cleanup and purification steps the final extracts were analyzed by HPLC for PAHs, and by GC-MS for PCBs and OCPs. The higher concentrations of all pollutants were found close to main urban and port areas of this lagoon and in the influence area of El Albujón watercourse. PAHs concentrations (sum of 14 congeners) in both species varied between 1 and 20.7 g/kg w.w. being pyrene and phenanthrene the most abundant ones. p,p’DDE showed higher concentrations than PAHs in golden grey mullet (concentration range: 0.2-32.7 g/kg w.w.), specially close to the main navigation channel between this lagoon and the Mediterranean Sea.This work has been supported by the Spanish Inter-Ministerial Science and Technology Commission through ‘DECOMAR’ project (CICYT, CTM2008-01832) and by Seneca Foundation (Region of Murcia, Spain) through ‘BIOMARO’ project (15398/PI/10). Rubén Moreno-González wishes to thank the Spanish Ministry of Science and Innovation for the FPI grant (BES 2009-014713)

Revisión y Control del Plan de Vigilancia Ambiental de las obras de dragado del Puerto de Maó

Se integra información hidrográfica, geomorfológica, sedimentológica y biológica, para la caracterización de los ecosistemas marinos en el punto de vertido y área adyacente previa al inicio de las obras de dragado del Puerto de Maó.RESUMEN: En este documento se presentan los trabajos científicos realizados por el Instituto Español de Oceanografía, dentro del Plan de Vigilancia Ambiental del dragado del Puerto de Maó (Menorca, Islas Baleares), para la caracterización de los ecosistema marino en el punto de vertido y área adyacente, previa al inicio de las obras. Se incluyen los resultados y las conclusiones de los estudios realizados por diversos grupos de investigación, principalmente en Enero-Marzo 2014, en relación al fondo marino, la hidrodinámica, las praderas de Posidonia oceanica y el molusco bivalvo Pinna nobilis, el macro-bentos de los fondos circalitorales blandos y los contaminantes en agua, sedimentos y biota, así como en especies de interés comercial para el consumo humano. Este informe se contempla en el contrato entre la Autoridad Portuaria de Baleares y el Instituto Español de Oceanografía, suscrito el 5 Febrero 2014, para los trabajos de asistencia técnica para la revisión y control del Plan de Vigilancia Ambiental del dragado del Puerto de Maó.RESUM: En aquest document es presenten els treballs científics realitzats per l’Instituto Español de Oceanografía, dins del Pla de Vigilància Ambiental del dragat del Port de Maó (Menorca, Illes Balears), per a la caracterització dels ecosistemes marins en el punt de vessament i àrea adjacent, prèvia a l’inici de les obres. S’inclouen els resultats i les conclusions del estudis realitzats per diversos grups de recerca, principalment durant Gener-Març 2014, en relació al fons marí, la hidrodinàmica, les praderies de Posidonia oceanica i el mol•lusc bivalve Pinna nobilis, el macro-bentos dels fons circalitorals tous i els contaminants en aigua, sediments i biota, així com en espècies d’interès comercial pel consum humà. Aquest informe es contempla en el contracte entre l’Autoritat Portuària de Balears i el Instituto Español de Oceanografía, subscrit el 5 Febrer 2014, pels treballs d’assistència tècnica per a la revisió i control del Pla de Vigilància Ambiental del dragat de Port de Maó.ABSTRACT: This document presents the scientific actions developed by the Instituto Español de Oceanografía within the Environmental Monitoring Plan of the works of dredging the Port of Maó (Minorca, Balearic Islands), for the characterization of the marine ecosystems in the point of discharge of dredged material and adjacent area, before the beginning of the dredging. The results and conclusions of the studies developed by several research groups, mainly in January-March 2014, in relation to the bottom, hydrodynamics, Posidonia oceanica meadows, and the bivalve mollusc Pinna nobilis, the macro-benthos of the circalittoral soft bottoms and the contaminants in water, sediments and biota, as well as in commercial species for human consumption, are included. This report is contemplated within the contract between the Autoridad Portuaria de Baleares and the Instituto Español de Oceanografía, signed on 5 February 2014, for the technical assistance activities to review and control the Environmental Monitoring Plan of the works of dredging the Port of Maó.Autoridad Portuaria de Baleare

Relaciones entre niveles tróficos en ambientes marinos del levante español

Publicad