Metal concentrations were measured for Al, As, Cd, Cr, Hg, Sr, Ni, Pb and Zn in sediments throughout nine sites over two periods (dry and rainy), as well as within organism tissues for the dry period in the Mamanguape River estuary in Brazil. The potential metal bioaccumulation in tissues was evaluated using the bioaccumulation factor (BAF). The estuary suffers from great anthropogenic pressure, mainly due to sugarcane crops, which are distributed in the areas surrounding the river. The concentrations of metals in the sediment were different according to the periods (dry and rainy) with a significance value of $\alpha \le 0.05$, with the rainy period presenting the highest concentrations. Positive correlations between the metal concentrations and granulometry (silt and clay) were found for both experimental periods. Maximum concentrations of As (9 mg/kg), Cr (513 mg/kg) and Ni (33.8 mg/kg) during the dry period, were above the limits for values estimated by international agencies and As (9 mg/kg) and Hg (0.13 mg/kg) values, were also above the limits for rainy periods. Crassostrea rhizophorae had the highest concentrations of metals (868.1 mg/kg) when compared to the other species. In Anomalocardia flexuosa, C. rhizophorae, Litopenaeus schmitti and Mugil curema the concentrations of Al, As, Cd, Cr, Hg, Sr, Ni and Zn were above the limits, established by legislation, for human consumption. The BAF showed the bioaccumulation of As, Cd, Hg, Ni and Zn in A. flexuosa; As, Cd, Sr and Zn in C. rhizophorae; Cd, Hg and Zn in L. schmitti; and Cd, Hg and Zn in M. curema. We conclude that according to international agencies, some metal concentrations found in the sediment and tissues of organisms exceed the previously established limits, indicating that the Mamanguape River estuary is under the influence of anthropogenic pressure.

在两个时期（干旱和多雨）以及在马曼瓜普普河干旱时期的生物组织内，测量了九个地点沉积物中金属，铝，砷，镉，铬，汞，汞，锶，镍，铅和锌的浓度在巴西河口。使用生物蓄积因子（BAF）评估组织中潜在的金属生物蓄积。河口承受着巨大的人为压力，这主要是由于甘蔗作物分布在河周围地区。沉积物中金属的浓度根据时期（干燥和多雨）而有所不同，其显着值为$\alpha \le 0。05$，雨季浓度最高。在两个实验期间都发现金属浓度和粒度（粉砂和粘土）之间呈正相关。干燥期的砷（9 mg / kg），铬（513 mg / kg）和镍（33.8 mg / kg）的最大浓度高于国际机构和砷（9 mg / kg）和汞（0.13 mg / kg）值也高于雨季的限值。与其他物种相比，根结节菜中的金属含量最高（868.1 mg / kg）。在Anomalocardia flexuosa，C. rhizophorae，凡纳滨schmitti和鲻curemaAl，As，Cd，Cr，Hg，Sr，Ni和Zn的浓度超过了法律规定的人类消费限制。的BAF表明砷，镉，汞，镍和锌的生物蓄积A. flexuosa ; 砷，镉，Sr和Zn的C. rhizophorae ; 施密特氏菌中的Cd，Hg和Zn ; 和镉，汞和锌M. curema。我们得出的结论是，根据国际机构的说法，在有机物的沉积物和组织中发现的某些金属浓度超过了先前确定的极限，这表明马曼瓜普河河口受到人为压力的影响。