Temporal and spatial changes of PAH concentrations in Mytilus galloprovincialis from Ria de Vigo (NW Spain) |
| |
Authors: | Lucia Viñas Angeles Franco Xoana Blanco Jessica Bargiela Jose A Soriano Begoña Perez-Fernandez Juan Jose Gonzalez |
| |
Institution: | 1. Centro Oceanográfico de Vigo, IEO (Instituto Espa?ol de Oceanografía), Subida a Radio Faro 50, 36390, Vigo, Spain
|
| |
Abstract: | The aim of this study was to establish the temporal trends and spatial distribution of Polycyclic Aromatic Hydrocarbons (PAHs)
in Ria de Vigo by means of studying the PAH burden in wild mussels. The samples were collected in eight sites along the margins
of the Ria de Vigo during November from 1998 to 2008 and Polycyclic Aromatic Hydrocarbon contents were determined using high
performance liquid chromatography–fluorescence derivatization (HPLC–FLD). Quality of chemical analysis was guaranteed by participation
in QUASIMEME intercalibration exercises carried out during the period of analysis. The concentrations for the sum of 13 PAHs
were in the range 24–480 μg/kg dw, typical of an urban and industrialized area (50–500 μg/kg dw) except for a punctual input
in La Guía in 1998 that led to a concentration above 1,000 μg/kg dw. In general, the sites in the outermost section of the
estuary (ría) showed the lowest values, with an increasing gradient in the medium and inner parts of the ría. Temporal patterns
show, in general, a downward trend. The relative proportion of 3 and 4 ring PAHs also varies with the site, the former being
predominant in the outermost area and the latter in the medium and inner parts of the ría. This is consistently related with
the sources and processes taking place in different areas of the estuary. |
| |
Keywords: | |
本文献已被 PubMed SpringerLink 等数据库收录! |
|