Relationships between polychlorinated biphenyls in molluscs, hydrological characteristics and human pressures, within Basque estuaries (northern Spain)

Polychlorinated biphenyls, organochlorine pesticides and trace metals in cultured and harvested bivalves from the eastern Adriatic coast (Croatia)

“…The gut content of bivalves in present study was not depurated prior to analysis. Depuration procedure is commonly applied to ensure that contaminated particles in the bivalve's gut do not lead to overestimation of contaminant bioavailability (Solaun et al, 2015;Olenycz et al, 2015). However, according to Gunther et al (1999), with the exception of lead and selenium, comparison of trace metal levels in depurated and non-depurated mussels revealed no significant differences.…”

Use of whole mussels and mussel gills in metal pollution biomonitoring

“…Para que los moluscos bivalvos puedan ser usados como monitores biológicos "[debe existir] una correlación entre el contenido del contaminante en el organismo y la concentración 2000). In the case of organic contaminants, direct relationships are usually observed between bioaccumulation in mussels and environmental concentrations in both water and sediments (Baumard et al 1999, Beiras et al 2003b, Solaun et al 2015. Such relationships have also been reported for metals in some cases (Yap et al 2002, Beiras et al 2003a), but no relationship has been observed in others (Gundacker 1999, Beiras et al 2003a, Giarratano et al 2010.…”

“…promedio del contaminante en el medioambiente que los rodea" (Sericano 2000). En el caso de los contaminantes orgánicos, generalmente, se observan relaciones directas entre la bioacumulación en mejillones y las concentraciones ambientales tanto en la columna de agua como en los sedimentos (Baumard et al 1999, Beiras et al 2003b, Solaun et al 2015. Estas relaciones también han sido reportadas para los metales en algunos casos (Yap et al 2002, Beiras et al 2003a, pero en otros no se ha observado una relación (Gundacker 1999, Beiras et al 2003a, Giarratano et al 2010.…”

Source characterisation and mid-term spatial and temporal distribution of polycyclic aromatic hydrocarbons in molluscs along the Basque coast (northern Spain)

“…In fact, high concentrations of PAH were measured in mussels collected at the mouth of this estuary (Site 12); this is as observed previously for other organic compounds, such as PCB. [41] Accordingly, when autumn data for the period 2003-2011 is considered, the highest percentages of samples above the established EQS and EAC are observed nearby highly urbanised and industrialised areas, such as the ports of Bilbao and Pasaia. Similar results were observed by Bellas et al [8] in a site located close to Bilbao and other large cities along the Cantabrian coast (e.g.…”

“…Similarly, other organic compounds, such as polychlorinated biphenyls (PCB), were associated with the highest concentrations in molluscs along the Basque coast, at this site. [41] This estuary was one of the most polluted areas along the northern coast of Spain, [25,27] and has suffered from serious environmental degradation, as a result of many pollutant discharges (both industrial and domestic); these are combined with the development of the iron, steel and ship-building industries, together with mining activities. [27] In addition, between 1992 and 2011, various docks have been constructed in the western part of the Ibaizabal estuary, where the harbour infrastructures and activities are located, together with the main areas of industrial development.…”