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Polycyclic aromatic hydrocarbons in sediments and shellfish from Todos os Santos bay, Brazil
Marine Pollution Bulletin ( IF 5.8 ) Pub Date : 2021-09-15 , DOI: 10.1016/j.marpolbul.2021.112944
Gilmara F Eça 1 , Ana C R Albergaria-Barbosa 2 , Manuel M de Souza 3 , Patrícia G Costa 4 , Adriele S Leite 5 , Gilberto Fillmann 4 , Vanessa Hatje 6
Affiliation  

The present study evaluated the occurrence of 24 Polycyclic Aromatic Hydrocarbons (PAHs) in sediments and shellfish (Anomalocardia flexuosa, Crassostrea rhizophorae, and Mytella guyanensis) of Todos os Santos bay (BTS, Brazil). Total PAHs levels ranged from 89 to 921 ng g-1 dry weight (d.w.) in sediments, and from 66 to 505 ng g-1 d.w. in shellfish, signalizing that BTS was moderately contaminated by PAHs, mostly from pyrogenic activities. The bioaccumulation factor (BAF) of total PAHs ranged from 0.20 to 2.9 and did not show a clear trend among the studied species. BAFs of high molecular weight compounds were higher for A. flexuosa (specie found buried in fine sediment), while those of low molecular weight compounds were higher for C. rhizophorae (specie found in the roots of mangrove trees). High concentrations of PAHs, especially benzo[a]pyrene and dibenzo[a,h]anthracene, suggest that contamination compromises shellfish quality and raise concern about seafood consumption safety.



中文翻译:

巴西托多斯桑托斯湾沉积物和贝类中的多环芳烃

本研究评估了托多斯桑托斯湾(BTS,巴西)的沉积物和贝类(Anomalocardia flexuosa、Crassostrea rhizophoraeMytella Guyanensis)中 24 种多环芳烃 (PAH) 的出现情况。沉积物中总多环芳烃水平范围为 89 至 921 ng g -1干重 (dw) ,贝类中为 66 至 505 ng g -1 dw,表明 BTS 受到多环芳烃中度污染,主要来自热解活动。总多环芳烃的生物累积因子 (BAF) 介于 0.20 至 2.9 之间,并且在所研究的物种中没有显示出明显的趋势。A. flexuosa 的高分子量化合物的BAF较高(发现埋在细泥沙中的物种),而对于C. rhizophorae(发现于红树林根部的物种),低分子量化合物的含量更高。高浓度的多环芳烃,尤其是苯并[ a ]芘和二苯并[ a , h ]蒽,表明污染会损害贝类质量并引起人们对海产品消费安全的担忧。

更新日期:2021-09-15
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