Department of Chemistry, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rua Marquês de São Vicente, 225, Gávea - Rio de Janeiro, RJ 22453-900, Brazil.
Chemosphere. 2013 Mar;90(9):2435-43. doi: 10.1016/j.chemosphere.2012.11.001. Epub 2012 Dec 1.
Polychlorinated biphenyls (PCBs) and Polybrominated Diphenyls Ethers (PBDEs) are two highly lipophilic classes of persistent organic pollutants able to resist degradation and with the ability to bioaccumulate through the food chain. In Brazil, there are still few studies on PCBs and PBDEs in aquatic organisms. In this study, we determined the levels of PBDEs and PCBs in three different fish species from the Ilha Grande Bay, located in the southern state of Rio de Janeiro, Brazil. PBDEs levels were very low, with values below the limit of quantification. PCBs concentrations ranged from 2.29 to 27.60 ng g(-1) ww in muscle and from 3.41 to 34.22 ng g(-1) ww in liver of the three investigated fish species. Significant positive correlations were established between PCBs concentration and fish biometric variables in mullet (length and lipid content) and a statistically significant change between seasons in croaker was observed.
多氯联苯（PCBs）和多溴联苯醚（PBDEs）是两类高度亲脂性的持久性有机污染物，能够抵抗降解，并通过食物链进行生物积累。在巴西，关于水生生物体内的 PCBs 和 PBDEs 的研究仍然较少。在这项研究中，我们测定了来自巴西里约热内卢南部伊利亚格朗德湾的三种不同鱼类体内的 PBDEs 和 PCBs 水平。PBDEs 的水平非常低，低于定量限。三种研究鱼类肌肉中的 PCBs 浓度范围为 2.29 至 27.60ng/g（湿重），肝脏中的浓度范围为 3.41 至 34.22ng/g（湿重）。在鲻鱼（长度和脂肪含量）中，PCBs 浓度与鱼类生物计量变量之间建立了显著的正相关关系，并且在鲈中观察到了季节之间的统计学上显著变化。
