Marine Resources and Fisheries Research Group, Faculty of Sciences, University of A Coruña, Rúa da Fraga, 10, 15008 A Coruña, Spain.
Mar Pollut Bull. 2013 Sep 15;74(1):291-301. doi: 10.1016/j.marpolbul.2013.06.038. Epub 2013 Jul 10.
Polychlorinated biphenyls, organochlorine pesticides, organotin compounds and triazines were quantified in sediments and bivalves collected in four areas on the Galician coast. One or several species were analysed at each site depending on their availability, including mussels (Mytilus galloprovincialis), cockles (Cerastoderma edule), clams (Venerupis pullastra and Ruditapes decussatus) and razor shells (Ensis siliqua). The general spatial distribution of contaminants was consistent in spite of the different sources of contamination. High inter-species variability was also observed. M. galloprovincialis and V. pullastra showed the highest levels of contaminants and intra-spatial variability, which highlights them as suitable species to be used as sentinel organisms. The area of O Burgo showed some worrisome results: PCB sediment concentrations were within the range that could cause biological effects. Also the level of heptachlor observed in V. pullastra was above limits accepted on edible seafood. Finally TBT concentration in mussels correlated with concentrations causing imposex in snails.
多氯联苯、有机氯农药、有机锡化合物和三嗪类化合物在加利西亚海岸四个地区采集的沉积物和双壳类动物中进行了定量分析。根据其可用性，在每个地点分析了一种或几种物种，包括贻贝（Mytilus galloprovincialis）、文蛤（Cerastoderma edule）、蛤（Venerupis pullastra 和 Ruditapes decussatus）和剃刀蛤（Ensis siliqua）。尽管存在不同的污染源，但污染物的总体空间分布是一致的。还观察到种间高度的可变性。M. galloprovincialis 和 V. pullastra 显示出最高的污染物水平和空间内变异性，这突出了它们作为合适的监测生物的优势。O Burgo 地区的结果令人担忧：沉积物中 PCB 的浓度在可能引起生物效应的范围内。此外，在 V. pullastra 中观察到的七氯含量超过了可食用海鲜的限量。最后，贻贝中的 TBT 浓度与引起螺类出现性畸变的浓度相关。
