Department of Environmental Engineering, Federal University of Parana, Curitiba, PR, Brazil.
Environ Monit Assess. 2011 Mar;174(1-4):135-45. doi: 10.1007/s10661-010-1444-1. Epub 2010 Apr 27.
The presence of polycyclic aromatic hydrocarbon (PAH) compounds in sediment and water samples collected in the estuary area of Paranagua, southern Brazil, was investigated. There is a lot of port activity in the region. Recreational fishing is widespread; thus, there is concern about possible contamination by PAHs. The 16 priority PAHs were investigated, and only eight were found. The total concentration of PAHs ranged from 40.8 to 406.8 ng/g. High molecular weight were the most abundant, while PAHs with a low molecular weight were absent. There are suspicions that the main source of PAHs is combustion, but some uncertainties exist, and there may even be the presence of PAHs resulting from accidental spills of crude oil. Although the sediments contain PAHs, the amount is below the maximum concentrations allowed by the Brazilian environmental legislation, as well as the maximum levels at which adverse effects are observed. From the analytical results, a probable bioaccumulation was assessed in the local trophic chain using a mathematical model (Arnot and Gobas, Environ Toxicol Chem 23(10):2343-2355, 2004). The model showed that there is a possibility of biomagnification along the food chain selected. Three fishes with high local consumption were selected, and the concentration of some PAHs could be found in those fishes.
本研究调查了巴西南部帕拉那瓜河口地区沉积物和水样中多环芳烃（PAH）化合物的存在情况。该地区有大量的港口活动。休闲渔业广泛存在，因此人们担心可能会受到 PAHs 的污染。研究了 16 种优先 PAHs，仅发现了其中的 8 种。PAHs 的总浓度范围为 40.8 至 406.8ng/g。高分子量的 PAHs 最为丰富，而低分子量的 PAHs 则不存在。有迹象表明，PAHs 的主要来源是燃烧，但存在一些不确定性，甚至可能存在由于原油意外泄漏而产生的 PAHs。尽管沉积物中含有 PAHs，但数量低于巴西环境法规允许的最高浓度以及观察到不良影响的最高水平。根据分析结果，使用数学模型（Arnot 和 Gobas，Environ Toxicol Chem 23(10):2343-2355, 2004）评估了当地食物链中可能存在的生物累积。该模型表明，在所选择的食物链中存在生物放大的可能性。选择了三种当地消费较高的鱼类，并在这些鱼类中发现了一些 PAHs 的浓度。
