Programa de Pós-Graduação em Geoquímica: Petróleo e Meio Ambiente (POSPETRO), Av. Adhemar de Barros, s/n - Ondina, CEP 40170-110 Salvador, BA, Brazil; LEPETRO - Instituto de Geociências, Universidade Federal da Bahia, Rua Barão de Jeremoabo, s/n - Campus, Ondina, 40170-020 Salvador, BA, Brazil; Laboratório de Geoquímica Marinha, Instituto de Geociências, Universidade Federal da Bahia, Rua Barão de Jeremoabo, s/n, 40170-020 Salvador, BA, Brazil.
Laboratório de Geoquímica Marinha, Instituto de Geociências, Universidade Federal da Bahia, Rua Barão de Jeremoabo, s/n, 40170-020 Salvador, BA, Brazil.
Mar Pollut Bull. 2020 Feb;151:110781. doi: 10.1016/j.marpolbul.2019.110781. Epub 2019 Dec 9.
The aim of the present study was to evaluate the presence of polycyclic aromatic hydrocarbons (PAHs) in oysters (Crassostrea rhizophorae) collected from Todos os Santos Bay (Bahia, Brazil). The total PAH concentration was highest in Madre de Deus (36.3 to 37.8 ng g in dry weight, dw), which is located near a petrochemical complex, oil refinery, and commercial port. In the Paraguaçu river estuary, PAH concentrations varied between 23.2 and 25.7 ng g dw. The lowest concentrations (1.55 ng g dw) were found in the Jaguaribe river estuary, which can be considered a relatively preserved area. The main source of PAHs in the study areas was observed to be pyrogenic. Values of benzo[a]pyrene toxic equivalent ranged from 0.28 to 4.20. The concentrations of PAHs in oysters from the Paraguaçu river estuary and in Madre de Deus indicate the possible lifetime risk of developing cancer in humans who feed on it.
本研究旨在评估来自Todos os Santos 湾（巴西巴伊亚州）的牡蛎（Crassostrea rhizophorae）中多环芳烃（PAHs）的存在情况。在 Madre de Deus 地区（靠近石化综合体、炼油厂和商业港口），总多环芳烃浓度最高（干重为 36.3 至 37.8 ng/g，dw）。在帕拉瓜苏河口，PAH 浓度在 23.2 和 25.7 ng/g dw 之间变化。在 Jaguaribe 河口发现的浓度最低（1.55 ng/g dw），可以认为该地区相对保存完好。研究区域中 PAHs 的主要来源是热成因的。苯并[a]芘毒性当量值范围为 0.28 至 4.20。来自帕拉瓜苏河口和 Madre de Deus 的牡蛎中的 PAH 浓度表明，食用这些牡蛎的人类可能存在终生患癌症的风险。
