The mussel Perna perna is one of the most used bioindicators of coastal areas and the most economically exploited species in Brazil through mariculture. In the present study, P. perna was used to investigate metal pollution in the estuarine area of Vitória Bay. Four sampling sites were located along an estuarine branch of Vitória Bay and stations were sampled during three campaigns. Trace metals in the tissues of P. perna were evaluated as well as dissolved trace metals and other ancillary variables in the water column. Dissolved Cd, Pb, Cu, Ni, and Fe concentrations surpassed the tolerance limits stablished by legislation in all the sampling campaigns. P. perna exhibited concentrations in disagreement with the Brazilian legislation for Cr and As. A general trend of higher concentrations in outer stations was observed for most metals, what suggested the occurrence of flocculation process in the lower estuary, reducing the concentrations of dissolved elements and increasing their bioavailability for the biota through the particulate form. Cd was highlighted with elevated concentrations in dissolved fraction but not detected in P. perna, probably due to chlor-complex formation under influence of more saline waters. Al, Ba, Mn, Fe, Cu, Zn, Ni, Cr, Pb, and As were considered bioavailable, once they were accumulated in the mussels’ tissues. Hazard index (HI) and target cancer risk (TCR) showed that the consumption of mussels from the study area offers health risk issues, being iron and arsenic the main contributors for the high indexes.

贻贝Perna perna是沿海地区最常用的生物指标之一，也是巴西通过海水养殖最经济利用的物种之一。在本研究中，P。perna被用于调查维托里亚湾河口地区的金属污染。沿着Vitória湾的河口分支设置了四个采样点，并在三个运动期间对站点进行了采样。评估了多年生假单胞菌组织中的痕量金属以及水柱中的溶解性痕量金属和其他辅助变量。在所有采样活动中，溶解的Cd，Pb，Cu，Ni和Fe的浓度均超过了立法规定的公差极限。佩纳体育展示出的浓度与巴西有关铬和砷的法规不一致。对于大多数金属，通常观察到外部站浓度较高的总体趋势，这表明在较低的河口发生了絮凝过程，从而降低了溶解元素的浓度，并通过颗粒形式增加了其对生物群的生物利用度。镉以溶解部分浓度升高而突出，但在多年生疟原虫中未检出，可能是由于在更多盐水的影响下形成了氯络合物。铝，钡，锰，铁，铜，锌，镍，铬，铅和砷被认为是可生物利用的，一旦它们堆积在贻贝的组织中。危害指数（HI）和目标癌症风险（TCR）表明，研究区域食用贻贝带来了健康风险问题，其中铁和砷是高指数的主要来源。