本研究检测了来自拉各斯泻湖 Makoko 漂浮贫民窟的 5 个物种的 10 种重金属：沃伦霍氏沼虾、斑节对虾、白虾、Chloroscombrus chrysurus 和 Pseudotolithustypus，以了解其生物富集潜力、来源和健康影响。浓度按以下顺序排列：Fe (4.172-10.176) > Zn (1.310-5.754) > Mn (0.475-2.330) > Cu (0.238-1.735) > Pb (0.121-0.391) > Cd (0.055-0.283) > Co (0.056-0.144) > 镍 (0.039-0.121) > 铬 (0.022-0.095) > 砷 (0.003-0.031) 毫克/千克。 MPDI 表示“低毒性”，BAF/BSAF 表明底栖物种具有较高的生物富集潜力。多变量分析表明，重金属在化学运输过程中表现出相互关系，其来源既有地理因素也有人为因素。 HI 值低于 1，TCR 值低于 1 × 10-4 阈值。这表明，由于长期食用所评估的物种而导致人群出现非癌症和致癌风险的可能性不大。版权所有 © 2024 Elsevier Ltd。保留所有权利。

This study examined ten heavy metals in five species: Macrobrachium vollenhovenii, Penaeus monodon, P. notialis, Chloroscombrus chrysurus, and Pseudotolithus typus, from Makoko floating slum, Lagos Lagoon to discern their bioaccumulation potentials, sources of origin, and health implications. The concentrations were in this order: Fe (4.172-10.176) > Zn (1.310-5.754) > Mn (0.475-2.330) > Cu (0.238-1.735) > Pb (0.121-0.391) > Cd (0.055-0.283) > Co (0.056-0.144) > Ni (0.039-0.121) > Cr (0.022-0.095) > As (0.003-0.031) mg/kg. The MPDI denotes "low toxicity," and the BAF/BSAF revealed that benthic species had higher bioconcentration potentials. Multivariate analyses revealed that heavy metals exhibited mutual relationships during chemical transport, and their sources were both geogenic and human-induced. The HI values were below 1, and the TCR values were below the threshold of 1 × 10-4. This suggests that the probabilities of noncancer and carcinogenic risks in human populations due to long-term consumption of the evaluated species are unlikely.Copyright © 2024 Elsevier Ltd. All rights reserved.