Fernando Marques Quintela, Fabiano Aguiar da Silva, Fabiano Correa, Fernando Rogério Carvalho, Daniel Galiano, Mel Christine Oliveira Pires, Ulisses Galatti
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引用次数: 0
Abstract
The present study investigated the levels of As, Ag, Al, Ba, Cd, Cr, Cu, Fe, Hg, Mn, Pb, Se, and Zn in muscle samples of six fish species (Pygocentrus nattereri, Serrasalmus marginatus, Mylossoma duriventre, Leporinus friderici, Pimelodus argenteus, and P. pantaneiro) highly consumed by local riverine and non-resident people in middle Miranda River, southern Brazilian Pantanal. Significant differences were detected for Ba, Fe, Mn, and Zn levels among the analyzed species. Pairwise comparison detected significant differences in element levels between species with similar diets, which implies that other factors, instead of species' feeding habits, could be involved in distinct levels of element bioaccumulation. Significant correlations between body size and concentrations were found for Ba in P. nattereri (moderate positive correlation), and for Mn in M. duriventre (weak positive correlation) and P. argenteus (moderate negative correlation). Levels exceeding tolerable daily intake (TDI) were found for Pb maximum concentrations in P. nattereri, M. duriventre, L. friderici, P. argenteus, and P. pantaneiro, and for Cd maximum concentration in P. argenteus. Health risk assessment indicated considerable risk only for the worst-case scenario (calculated from maximum concentrations) for all species. Adopting a Pb monitoring program in biotic and abiotic compartments in Miranda River is strongly recommended.
本研究调查了巴西南部潘塔纳尔地区米兰达河中游当地居民和非居民大量食用的六种鱼类（Pygocentrus nattereri、Serrasalmus marginatus、Mylossoma duriventre、Leporinus friderici、Pimelodus argenteus 和 P. pantaneiro）肌肉样本中的砷、银、铝、钡、镉、铬、铜、铁、汞、锰、铅、硒和锌含量。在分析的物种中，钡、铁、锰和锌的含量存在显著差异。配对比较发现，食性相似的物种之间元素水平存在显著差异，这意味着造成元素生物累积水平不同的可能是其他因素，而不是物种的摄食习惯。体型与元素浓度之间存在显著的相关性：钡在 P. nattereri（中度正相关）中，锰在 M. duriventre（弱正相关）和 P. argenteus（中度负相关）中。在 P. nattereri、M. duriventre、L. friderici、P. argenteus 和 P. pantaneiro 中发现的铅最高浓度和 P. argenteus 中的镉最高浓度均超过了每日可容忍摄入量 (TDI)。健康风险评估表明，所有物种只有在最坏情况下（根据最大浓度计算）才会面临相当大的风险。强烈建议在米兰达河的生物区和非生物区开展铅监测计划。
期刊介绍：
Archives of Environmental Contamination and Toxicology provides a place for the publication of timely, detailed, and definitive scientific studies pertaining to the source, transport, fate and / or effects of contaminants in the environment. The journal will consider submissions dealing with new analytical and toxicological techniques that advance our understanding of the source, transport, fate and / or effects of contaminants in the environment. AECT will now consider mini-reviews (where length including references is less than 5,000 words), which highlight case studies, a geographic topic of interest, or a timely subject of debate. AECT will also consider Special Issues on subjects of broad interest. The journal strongly encourages authors to ensure that their submission places a strong emphasis on ecosystem processes; submissions limited to technical aspects of such areas as toxicity testing for single chemicals, wastewater effluent characterization, human occupation exposure, or agricultural phytotoxicity are unlikely to be considered.
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